Answer: To determine if the series –128 + 96 – 72 + 54 – ... is a geometric series, we need to check if the ratio between consecutive terms is constant.
Let's calculate the ratio between the second and first terms:
96 / (-128) = -3/4
Now let's calculate the ratio between the third and second terms:
-72 / 96 = -3/4
The ratio between the fourth and third terms is:
54 / (-72) = -3/4
We can see that the ratio between consecutive terms is always the same: -3/4. Therefore, the series –128 + 96 – 72 + 54 – ... is a geometric series with a common ratio of -3/4.
So the answer is r equals negative three fourths.
Step-by-step explanation:
The series provided is a geometric series because each term after the first is found by multiplying the previous term by -3/4. Therefore, the common ratio 'r' equals -3/4.
Explanation:In a geometric series, each term after the first is found by multiplying the previous term by a fixed, non-zero number called the common ratio. In the series given –128 + 96 – 72 + 54 – …, the second term (96) divided by the first term (-128) equals -3/4, the third term (-72) divided by the second term (96) also equals -3/4, and so on. This constant ratio between successive terms demonstrates that this is indeed a geometric series. Therefore, the statement that proves this is a geometric series is 'r equals negative three fourths' where r represents the common ratio.
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The coach of a soccer team keeps many stats on her team's performance.
For example, she records if the team was ahead, behind, or tied with the opponent at the end of each half.
Here is a summary of the data she got after games.
End of first half result End of second half result Number of games
ahead ahead
ahead behind
ahead tied
behind ahead
behind behind
behind tied
tied ahead
tied behind
tied tied
Suppose the coach will continue recording the end-of-half results for more games.
In how many of these games will the team be behind at the end of exactly one of the halves? Use the data to make a prediction
Based on the given data, the team was behind at the end of exactly one of the halves in a total of 4 games (behind ahead, behind behind, tied behind, and tied tied).
Therefore, it is likely that the team will be behind at the end of exactly one of the halves in around 4 out of every 10 games.
However, this prediction may not be accurate as it depends on various factors such as the strength of the opponent and the performance of the team in each game.
Predictions are often based on statistical data, trends, patterns, or expert knowledge, and can help individuals or organizations make informed decisions and plan for the future. However, predictions are not guarantees and can be affected by unforeseen circumstances or changes in the underlying conditions.
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michelle is building a rectangular landing strip for airplanes. she has enough material to cover of a square mile. the landing strip must be of a mile long. with the amount of material that michelle has, what is the greatest possible width of the landing strip, in miles?
The greatest possible width the land strip, in miles with the amount of material that has is 1/250 miles wide.
A quadrilateral with parallel sides that are equal to one another and four equal vertices is known as a rectangle. It is also known as an equiangular quadrilateral for this reason.
Rectangles can also be referred to as parallelograms since their opposite sides are equal and parallel.
A quadrilateral with equal angles and parallel opposing sides is referred to as a rectangle. Around us, there are a lot of rectangle items. The length and breadth of each rectangle serve as its two distinguishing attributes. The width and length of a rectangle, respectively, are its longer and shorter sides.
Let's say that her landing strip is x miles long, then its area would be:
1/6.x
We also know how big it is:
so,
1/6.x = 1/1500
x = 6/1500
x = 3/750
x = 1/250 miles
Therefore, possible width of the landing strip is 1/250 miles.
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Complete question:
Michelle is building a rectangular landing strip for airplanes .She has material to cover 1/1,500 of a square mile. The landing strip must be 1/6 of a mile long. With the amount of material that has , what is the greatest possible width the land strip, in miles?
WALK THE PATH SHOWN WHAT IS THE DISTANCE
Answer:
D. 4π
Step-by-step explanation:
Circumference: C = 2πr = 2π(8) = 16π
The distance = 1/4 circumference (angle is 90 degrees)
=> distance = 16π/4 = 4π
at a party, seven gentlemen check their hats. in how many ways can their hats be returned so that 1. no gentleman receives his own hat? 2. at least one of the gentlemen receives his own hat? 3. at least two of the gentlemen receive their own hats?
1) There are 1854 ways to return the hats so that no gentleman receives his own hat.
2) There are 3186 ways to return the hats so that at least one of the gentlemen receives his own hat.
3) There are 865 ways to return the hats so that at least two of the gentlemen receive their own hats.
1) This problem involves the concept of permutations. A permutation is an arrangement of objects in a particular order. In this case, we need to find the number of permutations for returning the hats of the gentlemen.
To find the number of ways that no gentleman receives his own hat, we can use the principle of derangements. A derangement is a permutation of a set of objects such that no object appears in its original position.
The number of derangements of a set of n objects is denoted by !n and can be calculated using the formula:
!n = n!(1 - 1/1! + 1/2! - 1/3! + ... + (-1)^n/n!)
For n = 7, we have
!7 = 7!(1 - 1/1! + 1/2! - 1/3! + 1/4! - 1/5! + 1/6!)
= 1854
Therefore, there are 1854 ways to return the hats so that no gentleman receives his own hat.
2) To find the number of ways that at least one of the gentlemen receives his own hat, we can use the complementary principle. The complementary principle states that the number of outcomes that satisfy a condition is equal to the total number of outcomes minus the number of outcomes that do not satisfy the condition.
The total number of ways to return the hats is 7!, which is 5040. The number of ways that no gentleman receives his own hat is 1854 (as we found in part 1). Therefore, the number of ways that at least one of the gentlemen receives his own hat is
5040 - 1854 = 3186
Therefore, there are 3186 ways to return the hats so that at least one of the gentlemen receives his own hat.
3) To find the number of ways that at least two of the gentlemen receive their own hats, we can use the inclusion-exclusion principle. The inclusion-exclusion principle states that the number of outcomes that satisfy at least one of several conditions is equal to the sum of the number of outcomes that satisfy each condition minus the sum of the number of outcomes that satisfy each pair of conditions, plus the number of outcomes that satisfy all of the conditions.
In this case, the conditions are that each of the seven gentlemen receives his own hat. The number of outcomes that satisfy each condition is 6!, which is 720. The number of outcomes that satisfy each pair of conditions is 5!, which is 120. The number of outcomes that satisfy all of the conditions is 4!, which is 24.
Using the inclusion-exclusion principle, the number of outcomes that satisfy at least two of the conditions is
6! - (7C₂)5! + (7C₃)4! - (7C₄)3! + (7C₅)2! - (7C₆)1! + 0!
= 720 - (21)(120) + (35)(24) - (35)(6) + (21)(2) - (7)(1) + 0
= 720 - 2520 + 840 - 210 + 42 - 7 + 0
= 865
Therefore, there are 865 ways to return the hats so that at least two of the gentlemen receive their own hats.
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A food company puts exactly 10 sliced carrots in each bag of frozen vegetables. Let b represent the number of bags of frozen vegetables and c represent the total number of sliced carrots. Identify the independent variable.
A= b- the number of frozen bags
B= c- the total number of sliced carrots
C= there's not enough information given to answer
D= a food company puts carrots in a bag
The independent variable is A, the number of frozen bags.
The independent variable is the number of bags of frozen vegetables, represented by b. This is because the company can choose to package any number of bags, which will then determine the total number of sliced carrots, represented by c. The number of sliced carrots is not independent because it depends on the number of bags of frozen vegetables being packaged. Therefore, the answer is A, the number of frozen bags.
In statistical analysis, the independent variable is the variable that is being manipulated or changed in an experiment to observe the effect on the dependent variable.
In this case, the number of bags of frozen vegetables is the variable being manipulated, while the total number of sliced carrots is the dependent variable being affected by the number of bags. This understanding of independent and dependent variables is crucial in designing experiments and interpreting results in various fields, including food science, agriculture, and health research.
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Consider the following. u = (5, -9, -5), v = (-7, -4, 3) (a) Find the projection of u onto v
Projection of vector u onto vector v is approximately (1.33, 0.76, -0.57).
How to find the projection of vector u onto vector v?We'll use the following formula:
projection of u onto v = (u•v / ||v||²) * v
First, we need to calculate the dot product (u•v) and the magnitude squared (||v||²) of vector v.
1. Dot product (u•v):
u•v = (5 * -7) + (-9 * -4) + (-5 * 3) = -35 + 36 - 15 = -14
2. Magnitude squared (||v||²):
||v||^2 = (-7)² + (-4)² + (3)² = 49 + 16 + 9 = 74
Now, we'll plug these values into the projection formula:
projection of u onto v = (-14 / 74) * v
We'll multiply each component of vector v by the scalar (-14/74):
projection of u onto v = (-14/74) * (-7, -4, 3) = (1.33, 0.76, -0.57)
So, the projection of vector u onto vector v is approximately (1.33, 0.76, -0.57).
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its due in a few minuets
Answer:
Step-by-step explanation:
If I'm wrong, write and I'll correct it. Because I don't know how to proceed
Pregnant women process caffeine at about 5. 6% per hour. A 12-oz. Cup of a certain type of coffee has 260 mg of caffeine. Which equation represents the amount of caffeine C in a pregnant woman’s body t hours after the coffee is consumed?
The equation that represent the amount of caffeine C in a pregnant woman’s body t hours is [tex]C = 260(0.05)^{(t)}[/tex], under the condition that pregnant women process caffeine at about 5. 6% per hour.
Now the amount of caffeine C in a pregnant woman’s body t hours after the coffee is ingested can be projected by the equation
[tex]C = 260(0.05)^{(t)}[/tex]
here
C = amount of caffeine in milligrams (mg)
t = time in hours since the coffee was consumed
0.05 is the convention of 5.6%
It's crucial to note that pregnant women metabolize caffeine gradually slower than non-pregnant women, and it can take 1.5–3.5 times longer to eliminate caffeine from their body. In fact, most experts agree that caffeine is safe during pregnancy if limited to 200 mg or less per day.
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F(x, y)=x^2-6xy-2y^3
find the critical points of the
given functions and classify each as a relative
maximum, a relative minimum, or a saddle point
The one critical point at (0, 0).
The critical point (0, 0) is a saddle point, and the critical point (-9, -3) is a relative minimum.
To find the critical points of the given function f(x, y) = x^2 - 6xy - 2y^3, we need to find the points where the partial derivatives with respect to x and y are equal to zero.
Calculate the partial derivative with respect to x (f_x):
f_x = 2x - 6y
Calculate the partial derivative with respect to y (f_y):
f_y = -6x - 6y^2
Set both partial derivatives equal to zero and solve the system of equations:
2x - 6y = 0 ---(1)
-6x - 6y^2 = 0 ---(2)
From equation (1), we can rearrange it to solve for x:
2x = 6y
x = 3y
Substituting x = 3y into equation (2):
-6(3y) - 6y^2 = 0
-18y - 6y^2 = 0
-6y(3 + y) = 0
Now, we have two possible cases:
a) -6y = 0
b) 3 + y = 0
a) -6y = 0
This implies y = 0
Substituting y = 0 into equation (1):
2x - 6(0) = 0
2x = 0
x = 0
So, we have one critical point at (0, 0).
b) 3 + y = 0
This implies y = -3
Substituting y = -3 into equation (1):
2x - 6(-3) = 0
2x + 18 = 0
2x = -18
x = -9
So, we have another critical point at (-9, -3).
Now, to classify each critical point as a relative maximum, relative minimum, or a saddle point, we need to analyze the second-order partial derivatives.
Calculate the second partial derivative with respect to x (f_xx):
f_xx = 2
Calculate the second partial derivative with respect to y (f_yy):
f_yy = -12y
Calculate the mixed partial derivative (f_xy):
f_xy = -6
Now, evaluate the discriminant D = f_xx * f_yy - (f_xy)^2 at each critical point:
For the critical point (0, 0):
D = f_xx * f_yy - (f_xy)^2
= 2 * (-12 * 0) - (-6)^2
= 0 - 36
= -36
For the critical point (-9, -3):
D = f_xx * f_yy - (f_xy)^2
= 2 * (-12 * -3) - (-6)^2
= 72 - 36
= 36
Analyzing the discriminant:
For the critical point (0, 0):
If D < 0, it is a saddle point. In this case, D = -36, so (0, 0) is a saddle point.
For the critical point (-9, -3):
If D > 0 and f_xx > 0, it is a relative minimum. In this case, D = 36 and f_xx = 2, so (-9, -3) is a relative minimum.
Therefore, the critical point (0, 0) is a saddle point, and the critical point (-9, -3) is a relative minimum.
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What is the measure of ∠ABC?
The volume of this rectangular prism is 3 cubic feet. What is the surface area?
Answer:
27
Step-by-step explanation:
I'LL MARK BRAINLIEST !!!
Which point is the opposite of -5? Plot the point by dragging the black circle to the correct place on the number line.
JUST TELL ME THE CORRECT SPOT PLS!! TY !!!
Answer:
5
Step-by-step explanation:
The correct spot would be 5 because, on a number line, the opposite of a negative would be its positive counterpart and vise versa.
Solve the initial value problem t^2 dy/dt - t=1 + y + ty, y (1) = 8.
The solution of initial value problem, y = 9/t - 1, t ≠ 0.
We can begin by rearranging the equation and separating the variables:
t^2 dy/dt - yt = t + 1
dy/(y+1) = (t+1)/t^2 dt
Integrating both sides, we get:
ln|y+1| = -1/t + t/t + C
ln|y+1| = -1/t + C
|y+1| = e^C /t
Using the initial condition y(1) = 8, we can find the value of C:
|8+1| = e^C /1
e^C = 9
C = ln 9
Substituting back into the general solution, we have:
|y+1| = 9/t
We can now solve for y in terms of t:
y+1 = ±9/t
If we take the positive sign, we get:
y = 9/t - 1
If we take the negative sign, we get:
y = -9/t - 1
Thus, the general solution to the initial value problem is:
y = 9/t - 1 or y = -9/t - 1
Using the initial condition y(1) = 8, we can see that the correct solution is:
y = 9/t - 1
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Find (8. 4 × 108) ÷ (1. 5 × 103). Express your answer in scientific notation
The simplified value of the given expression (8. 4 × 10^8) ÷ (1. 5 × 10^3) in scientific notation form is given by 5.6 × 10^5.
Expression is equal to ,
(8. 4 × 10^8) ÷ (1. 5 × 10^3)
To divide two numbers in scientific notation, we need to divide their coefficients and subtract their exponents.
(8.4 × 10^8) ÷ (1.5 × 10^3)
Apply law of exponents here,
When m > n
a^m ÷ a^n = a^( m - n )
Here , a = 10 , m = 8 and n = 3
= (8.4 ÷ 1.5) × 10^(8-3)
= 5.6 × 10^5
Therefore, the value of given expression is equal to 5.6 × 10^5 in scientific notation.
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The above question is incomplete , the complete question is:
Find (8. 4 × 10^8) ÷ (1. 5 × 10^3). Express your answer in scientific notation
Nadia compares the weights, in grams, of some apples and oranges. She finds the median and
interquartile range of the weights.
Apple sample: median=150 interquartile range=8
Orange sample: median=130 interquartile range=11
1. Which sample has a greater typical value, or median?
2. Which sample has a greater variability, or spread?
3. According to these measures, is it possible the the heaviest piece of fruit in the two samples was an orange? Explain why or why not.
I need an answer soon
a) The apple sample has a greater typical value or median than the orange sample.
b) The orange sample has a greater variability or spread than the apple sample.
a) The median of the apple sample is 150 grams, while the median of the orange sample is 130 grams. Therefore, the apple sample has a greater typical value or median.
b) The interquartile range (IQR) of the apple sample is 8 grams, while the IQR of the orange sample is 111 grams. Therefore, the orange sample has a greater variability or spread.
c) It is possible that the heaviest piece of fruit in the two samples was an orange, as the orange sample has a larger range of weights than the apple sample. However, without knowing the maximum weight in each sample, we cannot say for certain whether the heaviest fruit was an orange or an apple.
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Please help me with this question!
I need an explanation on how to get the answer!
Answer:
C - 136
Step-by-step explanation:
Something important to remember here is that whenever you replace a variable with something else, that something else needs to go in parentheses.
3(7)² - 2(7) + 3
Following PEMDAS, you need to take care of that exponent before anything else. While parentheses are included as coming first, that is referring to operations within parentheses, which we don't have here.
3(49) - 2(7) + 3
Multiplication is the next step...
147 - 14 + 3
And finally, addition and subtraction.
147 - 11
136
Answer:
136
Step-by-step explanation:
Since the question stated that x= 7 you simply substitute all x in the expression with 7 and it would look something like this
3 (7)^2 - 2 (7) +3
PLEASE BRAINLIEST
Given the height of the cone is 12 m, find the slant height of the cone
a) 5m
b) 13 m
c) 17m
d) 11m
The slant height of the cone is approximately 5 meters.
We can use the Pythagorean theorem to find the slant height of the cone.
The slant height, denoted by l, the height h and the radius r form a right triangle where l is the hypotenuse:
[tex]l^2 = h^2 + r^2[/tex]
In this case, we are given the height h as 12 m, but we are not given the radius r.
However, we know that the slant height is the distance from the apex of the cone to any point on its circular base.
So, we can draw a line from the apex of the cone to the center of its circular base, which will be perpendicular to the base, and we can use this line as the height of a right triangle that also includes the radius r of the circular base.
Then, we can use the Pythagorean theorem to find the slant height l.
The radius r is half the diameter of the circular base, so we need to find the diameter of the base.
Since we are not given the diameter directly, we need to find it using the height h and the slant height l.
To do this, we can draw a cross section of the cone that includes its circular base and its height, and then draw a line from the apex of the cone to a point on the base that is perpendicular to the diameter of the base.
This line will be the height of a right triangle that also includes the radius r of the base and half the diameter of the base.
Then, we can use the Pythagorean theorem to find the diameter of the base.We have:
[tex]l^2 = h^2 + r^2r = sqrt(l^2 - h^2)d/2 = sqrt(l^2 - r^2)d^2/4 = l^2 - r^2d^2 = 4(l^2 - r^2)[/tex]
Substituting the expression for r that we found above, we get:
[tex]d^2 = 4(l^2 - (l^2 - h^2))d^2 = 4h^2d = 2h[/tex]
Now we can substitute this expression for d into the formula for the volume of a cone:
[tex]V = (1/3) * pi * r^2 * hV = (1/3) * pi * ((2h)/2)^2 * hV = (1/3) * pi * h^2 * 4V = (4/3) * pi * h^3[/tex]
We can solve this formula for h:
[tex]h = (3V)/(4*pi)^(1/3)[/tex]
Substituting the given volume of the cone, which we will assume is in cubic meters:
[tex]V = (1/3) * pi * r^2 * h = (1/3) * pi * r^2 * 12V = 16pih = (3(16pi))/(4*pi)^(1/3)[/tex]
h = 4.819 m
Now we can find the slant height using the Pythagorean theorem:
[tex]l^2 = h^2 + r^2l^2 = (4.819)^2 + ((2(4.819))/2)^2l^2 = 23.187l = 4.815[/tex] [tex]m[/tex]
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How many different can be formed from 9 teachers and 30 students if the committee consists of 2 teachers and 2 students? if how many ways can the committee of 4 members be selected?
There are 15,660 different ways a committee consisting of 2 teachers and 2 students can be formed from 9 teachers and 30 students.
To find out how many different committees can be formed from 9 teachers and 30 students, if the committee consists of 2 teachers and 2 students, we will use the combination formula. The combination formula is given by C(n, r) = n! / (r!(n-r)!), where n is the total number of items and r is the number of items to be selected.
First, let's find the number of ways to select 2 teachers from 9:
C(9, 2) = 9! / (2!(9-2)!) = 9! / (2! * 7!) = 36
Next, let's find the number of ways to select 2 students from 30:
C(30, 2) = 30! / (2!(30-2)!) = 30! / (2! * 28!) = 435
Now, to find the total number of ways the committee of 4 members can be selected, we simply multiply the number of ways to select teachers and students:
Total ways = 36 (ways to select teachers) * 435 (ways to select students) = 15,660
So, there are 15,660 different ways a committee consisting of 2 teachers and 2 students can be formed from 9 teachers and 30 students.
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Solve the seperable differential equation 1 9yy' = 2. Use the following initial condition: y(9) = 7. = Express x? in terms of y. x2 = (function of y).
the solution to the differential equation is: x = (1/36) y² - (13/36) Note that this equation represents a parabolic curve in the (x,y)-plane, opening upwards and with its vertex at (-13/36,0).
We can start by separating the variables and integrating both sides of the equation:
1/9 y dy = 2 dx
Integrating both sides with respect to their respective variables, we get:
(1/18) y² = 2x + C
where C is the constant of integration.
Using the initial condition y(9) = 7, we can substitute x=9 and y=7 to solve for C:
(1/18) (7²) = 2(9) + C
C = 49/2 - 18 = 13/2
Substituting this value of C back into the general solution, we get:
(1/18) y² = 2x + 13/2
Simplifying and solving for x, we get:
x = (1/36) y² - (13/36)
Therefore, the solution to the differential equation is:
x = (1/36) y² - (13/36)
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Question 17 (5 points) ✓ saved
a patient needs to take 0.5 g po qam and 0.25 g po of a medication before sleeping.
how many 500 mg tablets must be dispensed for a 30-day supply?
90 tablets
75 tablets
25 tablets
45 tablets
The patient must be dispensed 45 tablets for a 30-day supply.
To determine how many 500 mg tablets must be dispensed for a 30-day supply given that a patient needs to take 0.5 g po and 0.25 g po before sleeping, follow these steps:
1. Convert grams to milligrams:
0.5 g = 500 mg (morning dose)
0.25 g = 250 mg (evening dose)
2. Calculate the total daily dosage:
500 mg (morning) + 250 mg (evening) = 750 mg per day
3. Calculate the number of 500 mg tablets needed per day:
750 mg / 500 mg = 1.5 tablets per day
4. Calculate the number of tablets needed for a 30-day supply:
1.5 tablets per day * 30 days = 45 tablets
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Consider ABC.
What is the length of AC
A. 32units
B.48units
C.16units
D.24units
length of AC in the triangle is 32 units.
Define triangle proportionality ruleThe triangle proportionality theorem, also known as the side-splitter theorem, states that if a line is drawn parallel to one side of a triangle, then it divides the other two sides proportionally.
In mathematical terms, let ABC be a triangle with a line parallel to one side, say line DE || AB, where D lies on BC and E lies on AC. Then, the theorem states that:
BD/DC = AE/EC
In the given triangle ABC;
GH and AC are parallel
AG=BG
BH=HC
Using proportional rule
BG/AB=GH/AC
BG/2BG=16/AC
1/2=16/AC
AC=32 units
Hence, length of AC in the triangle is 32units.
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Answer:
1. 32 units
Step-by-step explanation:
sorry abt the other person but the answer is 32... i just took it
(4, 6) on a coordinate plane
Answer:
(4,6) on the coordinate plane is the 1st quadrant. You start at the origin, go 4 to the right and 6 up.
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I have 90 kg of beef and need to add 1. 4 oz of filler to each pound. How many ounces of filler will I add
The ounces of filler will the factory need in order to make meatballs out of this shipment of beef is 56.7 oz of filler.
A number of distinct units of mass, weight, or volume are derived from the uncia, an ancient Roman unit of measurement, including the ounce, which remains almost unmodified. The avoirdupois ounce, also known as the US customary and British imperial ounce, is equal to one-sixteenth of an avoirdupois pound.
One factory obtained 90 kg of beef from overseas.
They want to add 1.4oz of filler for each pound of beef.
Given is:
0.45 kg = 1 pound
So, 90 kg = 90 x 0.45 = 40.5 pounds
The company want to add 1.4 oz of filler for each pound of beef.
So for 1 pound we have 1.4 oz of filler
So, for 40.5 pounds they will need = x oz of filler.
x = 1.4 x 40.5 = 56.7
Therefore, the company needs 56.7 oz of filler.
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Complete question;
Factories often add filler when making meatballs sold by the bag. One factory obtained 90kg of beef from overseas. They want to add 1.4oz of filler for each pound of beef. How many ounces of filler will the factory need in order to make meatballs out of this shipment of beef?
The first two terms in an arthemetic progression are 2 and 9. The last term in the progression is the only number greater than 150. Find the sum of all the terms in the progression
The sum of all the terms in the arithmetic progression is 3507.
The common difference in an arithmetic progression is the difference between any two consecutive terms. Let the common difference be d. Then, the third term is 2 + d, the fourth term is 2 + 2d, and so on. Also, let the last term be n.
Since the last term is greater than 150, we can write n = 2 + (n-2)d > 150. Solving this inequality, we get d < 74. Therefore, the common difference can be 1, 2, 3, ..., 73.
Using the formula for the sum of an arithmetic progression, we get the sum of all the terms as (n/2)(first term + last term) = (n/2)(2 + n d) = (n/2)(11 + (n-1)d).
We can substitute n = (last term - first term)/d + 1 and solve for the sum. This gives us the final answer of 3507.
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Hydrologists sometimes use Manning's equation to calculate the velocity v, in feet per second, of water flowing through a pipe. The velocity depends on the hydraulic radius R in feet, which is one-quarter of the diameter of the pipe when the pipe a flowing full; the slope S of the pipe, which gives the vertical drop in foot for each horizontal foot; and the roughness coefficient n, which depends on the material of which the pipe is made. The relationship is given by the following. v = 1.486/n R^2/3 S^1/2 For a certain brass pipe, the roughness coefficient has been measured to be n = 0.014. The pipe has a diameter of 3 feet and a slope of 0.4 foot per foot. (That is, the pipe drops 0.4 foot for each horizontal foot.) If the pipe is flowing full, find the hydraulic radius of the pipe. () Find the velocity of the water flowing through the pipe. ()
The velocity of the water flowing through the pipe is approximately 7.83 feet per second. The hydraulic radius of the pipe can be calculated as follows:
R = d/4
where d is the diameter of the pipe. In this case, the diameter is 3 feet, so the hydraulic radius is:
R = 3/4 = 0.75 feet
Now, we can use the given formula to calculate the velocity of the water:
[tex]v =[/tex][tex]1.486/n[/tex] [tex]R^(2/3) S^(1/2)[/tex]
Substituting the given values, we get:
v = 1.486/0.014 (0.75[tex])^(2/3)[/tex] (0.4[tex])^(1/2)[/tex] ≈ 7.83 feet per second
Therefore, the velocity of the water flowing through the pipe is approximately 7.83 feet per second.
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A rectangle city park measures 7/10 mile by 2/6 mile. what is the area of the park?
The area of the rectangular park is equal to 0.233 sq miles.
The measurements of the park that are given in the question are given as 7/10 mile by 2/6 mile.
The length of the rectangle park is 7/10 and the width of the park is 2/6 mile. We know that the area of the rectangle park is given as the:
= length * width of the park.
= L * W
= (7/10) * (2/6)
we can reduce the fraction even further to make the calculation easy
= (7/10) * (1/3)
Multiplying the denominators we get
= 7/30
To make the answer even simpler it can be converted into a decimal form which will be:
= 0.233 sq miles.
Therefore, The area of the rectangular park is equal to 0.233 sq miles.
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An aircraft flying in a north easterly direction alters it's course by turning through one whole number 2 over 3 right angle to the right of it's path. what is it's new course
Answer:
Hello! I'd be happy to help you with your math question. Based on the information you've provided, the aircraft flying in a north easterly direction turned through one whole number 2 over 3 right angle to the right of its path. To determine its new course, we need to know the original course of the aircraft. Do you happen to have that information? Once we have that, we can use some trigonometry to calculate the new course. Let me know and I'll be happy to guide you through the process.
Answer:
hope it helps________________
Step-by-step explanation:
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Michaela is making memory boxes. She wants to cover the boxes with sheets of decorative paper on all sides before filling them. This net represents a single memory box.
How much paper is needed to cover each memory box?
Enter your answer in the box
The amount of paper required to cover each memory box is 5220 square inches.
Considering the edge of the cube = L units.
Thus the area of one side of the cube will be equal to L² unit².
Now, there will be 6 such sides for a closed cube then the total surface area will be 6*(L)² unit²
The given length breadth and height of the box is 35in, 24in, and 30in.
The formula for the surface area of a rectangular prism is:
SA = 2(lw + lh + wh)
Where:
SA = surface area l = length w = width h = height
For this memory box, the given length (35 in), width (24 in), and height (30 in).
Substituting these values into the formula the SA obtained will be:
SA = 2(35 × 24 + 35 × 30 + 24 × 30) SA
= 2(840 + 1050 + 720) SA
= 2(2610) SA = 5220inches²
Therefore, the answer will be 5220 square inches.
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The table below shows the number of gold, silver and bronze medals won by some
countries in the 1988 Winter Olympic Games.
Work out the ratio of gold to silver to bronze medals won by Sweden.
Give your answer in its simplest form.
Country
Canada
Finland
Soviet Union
Sweden
Gold
0
4
11
4
Silver
2
1
9
0
Bronze
3
2
9
2
Step-by-step explanation:
It looks as though ( from your post) Sweden won 4 golds and 0 silver and 2 bronze medals
4:0:2 simplifies to 2 :0 : 1
A newspaper for a large city launches a new advertising campaign focusing on the number of digital subscriptions. The equation S(t)=31,500(1. 034)t approximates the number of digital subscriptions S as a function of t months after the launch of the advertising campaign. Determine the statements that interpret the parameters of the function S(t)
The function S(t) = 31,500(1.034)^t approximates the number of digital subscriptions for a large city newspaper after the launch of a new advertising campaign, with an initial number of 31,500 subscriptions and a growth rate of 3.4% per month.
To interpret the parameters of the function S(t) = 31,500(1.034)^t, which approximates the number of digital subscriptions for a large city newspaper after the launch of a new advertising campaign.
1. The initial number of digital subscriptions (S(0)): This is represented by the constant 31,500 in the equation. When t=0 (at the launch of the campaign), the function becomes S(0) = 31,500(1.034)^0 = 31,500. This means that at the start of the advertising campaign, there were 31,500 digital subscriptions.
2. The growth rate of digital subscriptions: This is represented by the factor 1.034 in the equation. The growth rate is 3.4% (since 1.034 = 1 + 0.034).
This means that the number of digital subscriptions is expected to increase by 3.4% each month after the launch of the advertising campaign.
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