The expression in terms of π that represents the area of the shaded part of ⊙R is 3πR²/4, obtained by subtracting the area of the smaller circle from the larger circle.
How to find the area of the shaded region in terms of π?To find the area of circle of the shaded part of ⊙R, we need to subtract the area of the smaller circle from the area of the larger circle.
The area of a circle is given by the formula A = πr², where r is the radius of the circle.
Let the radius of the larger circle be R and the radius of the smaller circle be r. Then the area of the shaded part can be expressed as:
A(shaded) = A(large circle) - A(small circle)
= πR² - πr²
We can simplify this expression further by noticing that the radius of the smaller circle is half the radius of the larger circle, so r = R/2. Substituting this into the equation gives:
A(shaded) = πR² - π(R/2)²
= πR² - πR²/4
= 3πR²/4
Therefore, the area of the shaded part of ⊙R can be expressed as 3πR²/4. This expression represents the difference in the area between the larger and smaller circles, which gives us the area of the shaded region.
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The expression in terms of π that represents the area of the shaded part of ⊙R is 3πR²/4, obtained by subtracting the area of the smaller circle from the larger circle.
How to find the area of the shaded region in terms of π?To find the area of circle of the shaded part of ⊙R, we need to subtract the area of the smaller circle from the area of the larger circle.
The area of a circle is given by the formula A = πr², where r is the radius of the circle.
Let the radius of the larger circle be R and the radius of the smaller circle be r. Then the area of the shaded part can be expressed as:
A(shaded) = A(large circle) - A(small circle)
= πR² - πr²
We can simplify this expression further by noticing that the radius of the smaller circle is half the radius of the larger circle, so r = R/2. Substituting this into the equation gives:
A(shaded) = πR² - π(R/2)²
= πR² - πR²/4
= 3πR²/4
Therefore, the area of the shaded part of ⊙R can be expressed as 3πR²/4. This expression represents the difference in the area between the larger and smaller circles, which gives us the area of the shaded region.
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A shipping container is in the shape of a right rectangular prism with a length of 12 feet, a width of 13. 5 feet, and a height of 15 feet. The container is completely filled with contents that weigh, on average, 0. 47 pound per cubic foot. What is the weight of the contents in the container, to the nearest pound?
Answer=1142 lbs
The weight of the component is of length of 12 feet, a width of 13. 5 feet, and a height of 15 feet, and weighs on average 0. 47 pounds per cubic foot is 1142 lbs.
To find the weight of the contents in the container, we need to first find the volume of the container.
The formula for the volume of a right rectangular prism is length x width x height.
So, the volume of the container is:
12 ft x 13.5 ft x 15 ft = 2430 cubic feet
Next, we need to multiply the volume by the weight per cubic foot:
2430 cubic feet x 0.47 lbs/cubic foot = 1141.1 lbs
Rounding to the nearest pound, the weight of the contents in the container is approximately 1142 lbs.
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A lake near the Arctic Circle is covered by a 2-meter-thick sheet of ice during the cold winter months. When spring arrives, the warm air gradually melts the ice, causing its thickness to decrease at a constant rate. After 3 weeks , the sheet is only 1. 25 meters thick. Let y represent the ice sheet's thickness (in meters) after weeks. Which of the following information about the graph of the relationship is given?
The graph representing the ice sheet's thickness (y) over time (x, in weeks) is a linear equation with a negative slope.
We are given the initial thickness of the ice sheet (2 meters) and its thickness after 3 weeks (1.25 meters). The rate of decrease in thickness is constant.
To find the slope, we can use the formula: (change in y) / (change in x). Here, the change in y is (1.25 - 2) = -0.75 meters, and the change in x is 3 weeks.
Therefore, the slope is -0.75 / 3 = -0.25 meters/week. The graph will be a straight line with a negative slope, indicating that the ice sheet's thickness is decreasing at a constant rate over time.
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How much must be deposited today into the following account in order to have a $110,000 college fund in 17 years? Assume no additional deposits are made.
An account with quarterly compounding and an APR of 4.9%
Therefore, an initial deposit of $37,728.66 is required to have a college fund of $110,000 in 17 years with quarterly compounding and an APR of 4.9%.
What is a deposit used for?An amount held in an account is referred to as a deposit. It might be put up in a bank as collateral for goods that are being rented out or bought. A deposit is used in many different sorts of economic transactions.
Compound interest can be calculated using the following formula to determine the required down payment:
A = P(1 + r/n)(nt)
where:
A = the future value of the account (in this case, $110,000)
P = the principal or initial deposit
r = the annual interest rate (4.9%)
n = the number of times the interest is compounded per year (4 for quarterly compounding)
t = the number of years (17)
When we enter the specified numbers into the formula, we obtain:
$110,000 = P(1 + 0.049/4)(4*17)
$110,000 = P(1.01225)⁶⁸
$110,000 = P * 2.9126
Dividing both sides by 2.9126, we get:
P = $37,728.66
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Find the area of a circle with a radius of 2 2start color purple, 2, end color purple. Either enter an exact answer in terms of π πpi or use 3. 14 3. 143, point, 14 for π πpi and enter your answer as a decimal
The area of the circle is 12. 56 square units
How to determine the areaThe formula for calculating the area of a circle is expressed as;
A = πr²
This is so such that the parameters of the equation are;
A is the area of the circleπ takes the constant value of 3.14 or 22/7r is the radius of the circleFrom the information given, we have that;
Area = unknown
Radius = 2 units
Now, substitute the values into the formula, we have;
Area = 3.14 ×2²
Find the square
Area = 3.14 × 4
Multiply the values, we have;
Area = 12. 56 square units
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what percent of stainless steel in the tank is used to make the two ends
Answer:
The percentage of stainless steel used to make the two ends of the tank cannot be determined without additional information. Please provide more details about the tank and its construction.
Step-by-step explanation:
To calculate the percentage of stainless steel used to make the two ends of the tank, we need to know the total amount of stainless steel used to make the entire tank, as well as the amount used to make the ends. Without this information, it is impossible to determine the percentage of stainless steel used for the ends.
For example, if the tank is made entirely of stainless steel, then the percentage of stainless steel used to make the ends would be 100%. However, if the tank is made of multiple materials, then the percentage of stainless steel used for the ends would depend on the amount of stainless steel used for the entire tank and the amount used for the ends.
Therefore, to calculate the percentage of stainless steel used for the ends of the tank, we need additional information about the tank's construction and materials.
use the given information to solve the triangle
C=135° C = 45₁ B = 10°
4)
5) A = 26°₁ a = 10₁ 6=4
6) A = 60°, a = 9₁ c = 10
7) A=150° C = 20° a = 200
8) A = 24.3°, C = 54.6°₁ C = 2.68
9) A = 83° 20′, C = 54.6°₁ c 18,1
The law of sines is solved and the triangle is given by the following relation
Given data ,
From the law of sines , we get
a / sin A = b / sin B = c / sin C
a)
C = 135° C = 45₁ B = 10°
So , the measure of triangle is
A/ ( 180 - 35 - 10 ) = A / 35
And , a/ ( sin 135/35 ) = sin 35 / a
On simplifying , we get
a = 36.50
Hence , the law of sines is solved
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pls some help with this question!
Brody is going to invest $350 and leave it in an account for 18 years. Assuming the interest is compounded daily, what interest rate, to the
neatest tenth of a percent, would be required in order for Brody to end up with $790?
Brody would need an interest rate of 4.5% compounded daily.
How to calculate interest rate of investment?
We can use the compound interest formula to solve the problem:
[tex]A = P(1 + r/n)^(^n^t^)[/tex]
where:
A = final amount of money ($790)
P = initial investment ($350)
r = interest rate (unknown)
n = number of times interest is compounded per year (365, since interest is compounded daily)
t = time in years (18)
So, we can plug in the given values and solve for r:
[tex]790 = $350(1 + r/365)^(^3^6^5^1^8^)[/tex]
[tex]2.25714 = (1 + r/365)^(^3^6^5^1^8^)[/tex]
[tex]ln(2.25714) = ln[(1 + r/365)^(^3^6^5^1^8^)][/tex]
[tex]ln(2.25714) = 18ln(1 + r/365)[/tex]
[tex]ln(2.25714)/18 = ln(1 + r/365)[/tex]
[tex]e^(^l^n^(^2^.^2^5^7^1^4^)^/^1^8^)^ =^ 1^ +^ r^/^3^6^5[/tex]
[tex]1.0345 = 1 + r/365[/tex]
[tex]r/365 = 0.0345[/tex]
[tex]r = 12.5925[/tex]
Therefore, Brody would need an interest rate of approximately 12.6% (rounded to the nearest tenth of a percent) in order to end up with $790 after 18 years with daily compounding.
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The population p of a city founded in january 2009 is modeled by p(t) = 10000e*t, where t is
the time in years.
if the population was 30,000 in 2014, determine the growth rater. then, complete the model.
The population model is complete, with p(t) = 10000e(0.2197t), and the city's population is growing at a rate of about 0.2197 each year.
To determine the growth rate and complete the model for the population of a city founded in January 2009, we need to use the given information and equation, p(t) = 10000e^(rt), where t is the time in years, and r is the growth rate.
Determine the time (t) in years from January 2009 to 2014.
t = 2014 - 2009 = 5 years
Substitute the given population (30,000) and time (5 years) into the equation.
30,000 = 10000e^(5r)
Solve for the growth rate (r).
First, divide both sides by 10000:
3 = e^(5r)
Now, take the natural logarithm of both sides to isolate the exponent:
ln(3) = 5r
Finally, divide both sides by 5:
r = ln(3)/5 ≈ 0.2197
So, the growth rate is approximately 0.2197 per year.
Complete the model with the calculated growth rate.
p(t) = 10000e^(0.2197t)
The growth rate of the city's population is approximately 0.2197 per year, and the completed model for the population is p(t) = 10000e^(0.2197t).
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A rectangular patio is 10 feet by 13 feet. what is the length of the diagonal of the patio? (use pythagorean theorem: a² + b ²= c²)
The length of the diagonal is c = √269 feet.
To get the length of the diagonal of a rectangular patio, we can use the Pythagorean theorem, which states that for a right triangle with legs of length a and b, and hypotenuse of length c, a² + b² = c². In this case, the legs of the right triangle are the length and width of the rectangular patio, which are 10 feet and 13 feet, respectively. Let's use a and b to represent these lengths.
a = 10 feet
b = 13 feet
We want to find the length of the diagonal, which is the hypotenuse of the right triangle. Let's use c to represent this length.
a² + b² = c²
10² + 13² = c²
100 + 169 = c²
269 = c²
Now we need to find the square root of 269 to get the length of the diagonal.
c = √269
c ≈ 16.4 feet
So the length of the diagonal of the rectangular patio is approximately 16.4 feet. We can also find the ratio of the length, width, and diagonal of the rectangular patio.
length:width = 10:13
width:length = 13:10
length:diagonal = 10:√269
width:diagonal = 13:√269
diagonal:length = √269:10
diagonal:width = √269:13
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The lengths of the sides of a triangle
are 9, 12, and 15. what is the perimeter
of the triangle formed by joining the
midpoints of these sides?
The perimeter of the triangle formed by joining the midpoints of the sides of the original triangle is 3.
To find the perimeter of the triangle formed by joining the midpoints of the sides of the original triangle, we first need to find the midpoints. The midpoint of a side of a triangle is the point that is exactly halfway between the endpoints of that side.
Using the formula for the midpoint of a line segment ((x1+x2)/2, (y1+y2)/2), we can find the midpoints of the sides with lengths 9, 12, and 15:
Midpoint of the side with length 9: ((9+12)/2, (0+0)/2) = (10.5, 0)
Midpoint of the side with length 12: ((9+15)/2, (0+0)/2) = (12, 0)
Midpoint of the side with length 15: ((12+9)/2, (0+0)/2) = (10.5, 0)
Note that all three midpoints lie on the x-axis.
Now we can find the lengths of the sides of the triangle formed by joining the midpoints. These sides are the line segments connecting the midpoints, and their lengths are equal to the distances between the midpoints:
Length of the side connecting (10.5, 0) and (12, 0):
d = sqrt((12-10.5)^2 + (0-0)^2) = 1.5
Length of the side connecting (10.5, 0) and (10.5, 0):
d = sqrt((10.5-10.5)^2 + (0-0)^2) = 0
Length of the side connecting (12, 0) and (10.5, 0):
d = sqrt((10.5-12)^2 + (0-0)^2) = 1.5
So the triangle formed by joining the midpoints of the sides of the original triangle is an isosceles triangle with two sides of length 1.5 and one side of length 0. The perimeter of this triangle is:
Perimeter = 1.5 + 1.5 + 0 = 3
Therefore, the perimeter of the triangle formed by joining the midpoints of the sides of the original triangle is 3.
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The demand function for a company's product is P=26e^{-.04q} where Q is measured in thousands of units and P is measured in dollars.
(a) What price should the company charge for each unit in order to sell 2500 units? (Round your answer to two decimal places.) (b) If the company prices the products at $8.50 each, how many units will sell? (Round your answer to the nearest integer.) units
A. the company should charge approximately $18.08 per unit to sell 2500 units.
B. Q is measured in thousands, this means the company will sell about 6350 units (rounded to the nearest integer) when the price is set at $8.50 per unit.
(a) To find the price for each unit to sell 2500 units, we need to plug Q = 2.5 (since Q is in thousands) into the demand function P = 26e^(-0.04Q):
P = 26e^(-0.04 * 2.5)
After calculating the value, we get:
P ≈ 18.08
So, the company should charge approximately $18.08 per unit to sell 2500 units.
(b) To find how many units will sell if the price is $8.50, we need to solve the equation P = 26e^(-0.04Q) for Q:
8.50 = 26e^(-0.04Q)
First, we need to isolate the exponential term:
(8.50 / 26) = e^(-0.04Q)
Now, take the natural logarithm (ln) of both sides:
ln(8.50 / 26) = -0.04Q
Next, divide both sides by -0.04:
Q = ln(8.50 / 26) / -0.04
After calculating the value, we get:
Q ≈ 6.35
Since Q is measured in thousands, this means the company will sell about 6350 units (rounded to the nearest integer) when the price is set at $8.50 per unit.
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Animal
Distance
Time
Speed
1
Lion
30 kilometers
30 minutes
2
Sailfish
195 kilometers
1 hour and 30 minutes
زÙا
Peregrine Falcon
778 kilometers
120 minutes
4
Cheetah
30 kilometers
15 minutes
5
Springbok
10 kilometers
6 minutes
6
Golden Eagle
240 kilometers
45 minutesâ
Distance time speed of different animals are:
Lion = 60 km/h Sailfish = 130 km/h Peregrine Falcon = 389 km/h Cheetah = 120 km/h Springbok = 100 km/h Golden Eagle = 320 km/h.
Here are the answers for each one:
1. Lion: The lion traveled a distance of 30 kilometers in a time of 30 minutes. To find the lion's speed, we can use the formula: speed = distance ÷ time. So, the lion's speed was 30 km ÷ 0.5 hours = 60 km/h.
2. Sailfish: The sailfish traveled a distance of 195 kilometers in a time of 1 hour and 30 minutes, which is the same as 1.5 hours. To find the sailfish's speed, we can again use the formula: speed = distance ÷ time. So, the sailfish's speed was 195 km ÷ 1.5 hours = 130 km/h.
3. Peregrine Falcon: The peregrine falcon traveled a distance of 778 kilometers in a time of 120 minutes, which is the same as 2 hours. To find the peregrine falcon's speed, we can once again use the formula: speed = distance ÷ time. So, the peregrine falcon's speed was 778 km ÷ 2 hours = 389 km/h.
4. Cheetah: The cheetah traveled a distance of 30 kilometers in a time of 15 minutes, which is the same as 0.25 hours. To find the cheetah's speed, we can use the formula: speed = distance ÷ time. So, the cheetah's speed was 30 km ÷ 0.25 hours = 120 km/h.
5. Springbok: The springbok traveled a distance of 10 kilometers in a time of 6 minutes, which is the same as 0.1 hours. To find the springbok's speed, we can use the formula: speed = distance ÷ time. So, the springbok's speed was 10 km ÷ 0.1 hours = 100 km/h.
6. Golden Eagle: The golden eagle traveled a distance of 240 kilometers in a time of 45 minutes, which is the same as 0.75 hours. To find the golden eagle's speed, we can use the formula: speed = distance ÷ time. So, the golden eagle's speed was 240 km ÷ 0.75 hours = 320 km/h.
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58 of a birthday cake was left over from a party. the next day, it is shared among 7 people. how big a piece of the original cake did each person get?
If 58% of the birthday cake was left over from the party, then 42% of the cake was consumed during the party. That's why, each person would get approximately 8.29% of the original cake as a leftover piece the next day.
Let's assume that the original cake was divided equally among the guests during the party.
So, if 42% of the cake was shared among the guests during the party, and there were 7 people in total, each person would have received 6% of the cake during the party.
Now, the leftover 58% of the cake is shared among the 7 people the next day. To find out how big a piece of the original cake each person gets, we need to divide 58% by 7:
58% / 7 = 8.29%
Therefore, each person would get approximately 8.29% of the original cake as a leftover piece the next day.
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You earn $130.00 for each subscription of magazines you sell plus a salary of $90.00 per week. How many subscriptions of magazines do you need to sell in order to make at least $1000.00 each week?
How to get the centre of the circle when the circumference is not given
To find the center of a circle when the circumference is not given, you still find it.
1. Determine the coordinates of at least three non-collinear points on the circle. Non-collinear points are points that do not lie on a straight line.
2. Using these points, create two line segments that are chords of the circle. A chord is a line segment connecting two points on the circle.
3. Find the midpoints of each chord. The midpoint formula is given as: Midpoint (M) = ((x1 + x2) / 2, (y1 + y2) / 2).
4. Calculate the slope of each chord using the slope formula: Slope (m) = (y2 - y1) / (x2 - x1).
5. Calculate the slope of the perpendicular bisectors of each chord. Since these lines are perpendicular to the chords, their slopes are the negative reciprocal of the chord slopes: m_perpendicular = -1 / m_chord.
6. Write the equation of each perpendicular bisector using the point-slope formula: y - y_midpoint = m_perpendicular * (x - x_midpoint).
7. Solve the system of equations formed by the two perpendicular bisectors. The solution is the coordinates of the center of the circle.
By following these steps, you can find the center of the circle even when the circumference is not given.
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The black graph is the graph of
y = f(x). Choose the equation for the
red graph.
*
a. y = f(x - 1)
b. y = f (²)
c.
d.
y - 1 = f(x)
= f(x)
= 17
Enter
The equation for the red graph is y = f(x - 1) (option a)
Graphs are visual representations of mathematical functions that help us understand their behavior and properties.
In this problem, we are given a black graph that represents the function y=f(x), and we need to choose the equation that represents the red graph. Let's examine each option and see which one fits the red graph.
Option (a) y = f(x - 1) represents a shift of the function f(x) to the right by one unit. This means that every point on the black graph will move one unit to the right to form the red graph.
However, from the given graph, we can see that the red graph is not a shifted version of the black graph. Therefore, option (a) is not the correct answer.
Hence the correct option is (a).
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A local deli sells 6-inch sub sandwiches for $2.95. Now the deli has decided to sell a “family sub” that is 50 inches long. If they want to make the larger sub price comparable to the price of the smaller sub, how much should it charge? Show all work.
Deli should charge $24.50 for the 50-inch family sub.
How much should the deli charge for a 50-inch?In a transaction, the price of something refers to amount of money that you have to pay in order to buy it. To make the prices comparable, we can use the unit price which is as follows>
The price per inch of 6-inch sub is:
= $2.95 / 6 inches
= $0.49/inch
To make 50-inch sub price, we will solve as:
= $0.49/inch * 50 inches
= $24.50
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Gina made a
playlist of children's songs. In 1 hour,
how many more times could she play
"Row, Row, Row Your Boat" than "Twinkle,
Twinkle, Little Star"?
The number of times more that Gina can play the playlist of children's songs in an hour would be 94. 7 times.
How to find the number of times ?The playlist that Gina made of children's songs. In an hour, the number of seconds we have is :
= 60 secs x 60 mins
= 3, 600 seconds
The number of times that "Row, Row, Row Your Boat" can be played is:
= 3, 600 / 8
= 450 times
The number of times that Gina can play "Twinkle, Twinkle, Little Star" is :
= 3, 600 / 20
= 180 times
The number of times more :
= 450 - 180
= 270 times
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HELP ASAP PLEASE!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Challenge: Six different names were put into a hat. A name is chosen 100 times and the name Fred is chosen 11 times. What is the experimental probability of the name Fred beingâ chosen? What is the theoretical probability of the name Fred beingâ chosen? Use pencil and paper. Explain how each probability would change if the number of names in the hat were different.
The experimental probability of choosing the name Fred is nothing.
=============
The theoretical probability of choosing the name Fred is nothing
The experimental and theoretical probability of the name Fred being chosen is 0.11 and 0.167 respectively.
The question is asking for the experimental and theoretical probabilities of choosing the name Fred when six different names are put into a hat and a name is chosen 100 times.
To find the experimental probability of choosing the name Fred, divide the number of times Fred is chosen by the total number of trials (100 times). In this case, Fred is chosen 11 times.
Experimental probability of choosing Fred = (number of times Fred is chosen) / (total number of trials)
= 11 / 100
= 0.11 or 11%
For the theoretical probability, since there are six different names in the hat and each name has an equal chance of being chosen, the probability of choosing Fred is:
Theoretical probability of choosing Fred = 1 / 6
≈ 0.167 or 16.67%
If the number of names in the hat were different, the theoretical probability would change because the denominator (total number of names) would be different. For example, if there were 5 names instead of 6, the theoretical probability of choosing Fred would be 1/5 or 20%.
The experimental probability would also likely change since the outcomes of the trials would be different with a different number of names.
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why is 101 not in the sequence of 3n-2
101 is not in the sequence of 3n-2 because it cannot be obtained by multiplying a positive integer n by 3 and subtracting 2 from the product.
The sequence 3n-2 is a set of numbers obtained by taking a positive integer n, multiplying it by 3 and then subtracting 2 from the product. For example, if n = 1, then 3n-2 = 1. If n = 2, then 3n-2 = 4. If n = 3, then 3n-2 = 7, and so on.
Now, you may wonder why the number 101 is not in the sequence of 3n-2. To understand this, we need to determine whether there exists a positive integer n such that 3n-2 is equal to 101.
Let's start by assuming that such an n exists. Then we can write:
3n-2 = 101
Adding 2 to both sides, we get:
3n = 103
Dividing both sides by 3, we get:
n = 103/3
This means that n is not a whole number, which contradicts our assumption that n is a positive integer. Therefore, there cannot exist any positive integer n such that 3n-2 equals 101.
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What are measurements less than 435 inches???? Hurry it’s due tomorrow!!!
Any measurement below 435 inches qualifies as a value less than 435 inches.
To find measurements less than 435 inches, you simply need to consider any value below 435 inches. Here's a step-by-step explanation:
1. Understand the question: You are looking for measurements less than 435 inches.
2. Identify the range: The range includes all values below 435 inches.
3. Provide examples: Examples of measurements less than 435 inches can be 400 inches, 350 inches, 250 inches, 100 inches, and so on.
Remember, any measurement below 435 inches qualifies as a value less than 435 inches.
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You spin a spinner that has 12 equal-sized sections numbered 1 to 12. Find the probability of p(even or less than 8)
The probability of getting an even number or a number less than 8 is:
P = 0.83
How to find the probability for the given event?The probability is equal to the quotient between the number of outcomes for the given event and the total number of outcomes.
The numbers that are even or less than 8 are:
{1, 2, 3, 4, 5, 6, 7, 8, 10, 12}
So 10 out of the total of 12 outcomes make the event true, then the probability we want to get is the quotient between these numbers:
P = 10/12 = 0.83
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Sam built a circular fenced-in section for some of his animals. The section has a circumference of 55 meters. What is the approximate area, in square meters, of the section? Use 22/7 for π.
The approximate area of the circular fenced-in section is 950.5 square meters.
The circumference of a circle is given by the formula 2πr, where r is the radius of the circle. We are given that the circumference of the fenced-in section is 55 meters, so we can set up the equation:
2πr = 55
We can solve for r by dividing both sides by 2π:
r = 55/(2π)
We are asked to find the area of the section, which is given by the formula A = πr². Substituting our expression for r, we get:
A = π(55/(2π))²
Simplifying, we get:
A = (55²/4)π
Using the approximation 22/7 for π, we get:
A ≈ (55²/4)(22/7)
A ≈ 950.5
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what is the side length of a cube that has a volume of 64 square inches
Answer:
side length of cube=4inch
Step-by-step explanation:
volume of cube(V)=64sqinch
length of side(l)=?
Now,
volume of cube(V)=l^3
64=l^3
∛64=l
4=l
l=4inch
A random number generator picks a number from 12 to 41 in a uniform manner. Round answers to 4 decimal places when possible.
a. The mean of this distribution is
b. The standard deviation is
c. The probability that the number will be exactly 36 is P(x = 36) =
d. The probability that the number will be between 21 and 23 is P(21 < x < 23) =
e. The probability that the number will be larger than 26 is P(x > 26) =
f. P(x > 16 | x < 18) =
g. Find the 49th percentile.
h. Find the minimum for the lower quartile
The mean of this distribution is 26.5. The standard deviation is 8.0623. The probability that the number will be exactly 36 is P (x = 36) = 0.0286. The probability that the number will be between 21 and 23 is P (21 < x < 23) = 0.0400. The probability that the number will be larger than 26 is P (x > 26) = 0.2857. P (x > 16 | x < 18) = undefined. The 49th percentile is 29.3700. The minimum for the lower quartile is 19.75.
a. The mean of a uniform distribution is the average of the maximum and minimum values, so in this case, the mean is:
mean = (12 + 41) / 2 = 26.5
Therefore, the mean of this distribution is 26.5.
b. The standard deviation of a uniform distribution is given by the formula:
sd = (b - a) / sqrt(12)
where a and b are the minimum and maximum values of the distribution, respectively. So in this case, the standard deviation is:
sd = (41 - 12) / sqrt(12) = 8.0623
Therefore, the standard deviation of this distribution is 8.0623.
c. Since the distribution is uniform, the probability of getting any specific value between 12 and 41 is the same. Therefore, the probability of getting exactly 36 is:
P(x = 36) = 1 / (41 - 12 + 1) = 0.0286
Rounded to four decimal places, the probability is 0.0286.
d. The probability of getting a number between 21 and 23 is:
P(21 < x < 23) = (23 - 21) / (41 - 12 + 1) = 0.0400
Rounded to four decimal places, the probability is 0.0400.
e. The probability of getting a number larger than 26 is:
P(x > 26) = (41 - 26) / (41 - 12 + 1) = 0.2857
Rounded to four decimal places, the probability is 0.2857.
f. The probability that x is greater than 16, given that it is less than 18, can be calculated using Bayes' theorem:
P(x > 16 | x < 18) = P(x > 16 and x < 18) / P(x < 18)
Since the distribution is uniform, the probability of getting a number between 16 and 18 is:
P(16 < x < 18) = (18 - 16) / (41 - 12 + 1) = 0.0400
The probability of getting a number greater than 16 and less than 18 is zero, so:
P(x > 16 and x < 18) = 0
Therefore:
P(x > 16 | x < 18) = 0 / 0.0400 = undefined
There is no valid answer for this question.
g. To find the 49th percentile, we need to find the number that 49% of the distribution falls below. Since the distribution is uniform, we can calculate this directly as:
49th percentile = 12 + 0.49 * (41 - 12) = 29.37
Rounded to four decimal places, the 49th percentile is 29.3700.
h. The lower quartile (Q1) is the 25th percentile, so we can calculate it as:
Q1 = 12 + 0.25 * (41 - 12) = 19.75
Therefore, the minimum for the lower quartile is 19.75.
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Use the coordinates to find the length of each side
Then find the perimeter. (Examples 1 and 2)
D(1, 2), E(1, 7), F(4, 7), G(4, 2)
The largest single rough diamond ever found, the cullinan diamond, weighed 3106 carats; how much does the diamond weigh in miligrams? in pounds? (1 carat - 0. 2 grams)
the diamond weighs mg.
the diamond weighs lbs
If the largest single rough diamond ever found, the Cullinan diamond, weighed 3106 carat, it weighs approximately 621,200 milligrams and 1.37 pounds.
The Cullinan Diamond, the largest single rough diamond ever found, weighed 3,106 carats. To convert its weight to milligrams and pounds, we'll use the conversion factor of 1 carat = 0.2 grams.
First, convert carats to grams:
3,106 carats * 0.2 grams/carat = 621.2 grams
Next, convert grams to milligrams:
621.2 grams * 1,000 milligrams/gram = 621,200 milligrams
Lastly, convert grams to pounds:
621.2 grams * 0.00220462 pounds/gram ≈ 1.37 pounds
So, the Cullinan Diamond weighs approximately 621,200 milligrams and 1.37 pounds.
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6) Mary sold $192 worth of greeting cards. If she received 25% commission on her sale
now much commission did she earn?
Find the volume generated when the area bounded by the curve y?=x, the line x=4 and the
x-axis is revolved about the y-axis.
To find the volume generated, we need to use the formula for volume of revolution. We are revolving the area bounded by the curve y=x, the line x=4 and the x-axis about the y-axis.
First, we need to find the limits of integration for x. The curve y=x intersects the line x=4 at y=4, so we integrate from x=0 to x=4.
Next, we need to find the radius of the rotation. The radius is the distance from the y-axis to the curve at each value of x. Since we are revolving about the y-axis, the radius is simply x.
Using the formula for volume of revolution, we get:
V = π∫(radius)^2 dx from 0 to 4
V = π∫x^2 dx from 0 to 4
V = π[x^3/3] from 0 to 4
V = π[(4^3/3) - (0^3/3)]
V = (64π/3)
Therefore, the volume generated when the area bounded by the curve y=x, the line x=4 and the x-axis is revolved about the y-axis is (64π/3).
To find the volume generated when the area bounded by the curve y=x^2, the line x=4, and the x-axis is revolved around the y-axis, we'll use the disk method. The formula for the disk method is:
Volume = π * ∫ [R(x)]^2 dx
Here, R(x) is the radius function and the integral is taken over the given interval on the x-axis. In this case, R(x) = x and the interval is from 0 to 4.
Volume = π * ∫ [x]^2 dx, with the integral from 0 to 4
Now, we'll evaluate the integral:
Volume = π * [ (1/3)x^3 ](0 to 4)
Volume = π * [ (1/3)(4)^3 - (1/3)(0)^3 ]
Volume = π * [ (1/3)(64) - 0 ]
Volume = π * [ (64/3) ]
So, the volume generated is (64/3)π cubic units.
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