Answer:
t=7m
Step-by-step explanation:
In this equation, "t" represents time, and "m" represents miles. Each mile is 7 minutes. To find how much time this run will take her, multiple the amount of miles she will run by 7.
For example:
If Tinley runs 13 miles you should do-
7(13)= 91
13 miles would take Tinley 91 minutes
what is the solution set of the equation (x -2) (x-a) = 0 ?
Answer:
x=2, x=a
Step-by-step explanation:
(x -2) (x-a) = 0
(x-2)(x-a) = 0
x-2=0
x-2+2=0+2
x=2
x-a=0
x-a+a=0+a
x=a
The length of a rectangle is 3 yd more than twice the width, and the area of the rectangle is 54 yd?. Find the dimensions of the rectangle.
Answer:
The length of the rectangle is 37 yards, and the width of the rectangle is 17 yards.
Step-by-step explanation:
Given that the length of a rectangle is 3 yards more than twice the width, and the area of the rectangle is 54 yards, the following calculation must be performed to find the dimensions of the rectangle, knowing that the area of a rectangle arises from multiplying its base by its height:
2X + 3 + X = 54
3X + 3 = 54
3X = 54 - 3
X = 51/3
X = 17
(17 x 2) + 3 = 37
Therefore, the length of the rectangle is 37 yards, and the width of the rectangle is 17 yards.
A circular field has an area of about 4,000,000 square yards. Write an equation that
represents the boundary of the field. Let (0, 0) represent the center of the field. Use
A= 7m2 to find r (Round to the nearest whole number).
Answer:
[tex]x^2 + y^2 = 1273885[/tex]
Step-by-step explanation:
Given
[tex]Area = 4000000[/tex]
[tex](h,k) =(0,0)[/tex]
Required
The equation of the circle
First, we calculate the radius of the circle using;
[tex]Area = \pi r^2[/tex]
This gives:
[tex]4000000= \pi r^2[/tex]
Divide both sides by [tex]\pi[/tex]
[tex]\frac{4000000}{\pi}= r^2[/tex]
Take [tex]\pi[/tex] as 3.14
[tex]\frac{4000000}{3.14}= r^2[/tex]
[tex]1273885.35032= r^2[/tex]
Approximate
[tex]1273885= r^2[/tex]
Rewrite as:
[tex]r^2 = 1273885[/tex]
The equation of the circle is:
[tex](x - h)^2 + (y - k)^2 = r^2[/tex]
Where:
[tex](h,k) =(0,0)[/tex]
[tex]r^2 = 1273885[/tex]
So, we have:
[tex](x - 0)^2 + (y -0)^2 = 1273885[/tex]
Open brackets
[tex]x^2 + y^2 = 1273885[/tex]
(c) is correct.
The difference in [tex]x^2 + y^2 = 1273885[/tex] and (c) in the question is due to approximation
PLEASE HURRY! FIRST PERSON GETS BRAINLIST!!!!!!
Hank is throwing a surprise party. The party costs $20 per person. Create an equation and graph to represent the relationship between the cost of the party and the number of friends attending.
The independent variable is ____.
A. Number of friends (f)
B. Cost of party (c)
Answer:
B
Step-by-step explanation:
two primes that add to 24
Answer:
11+13
Step-by-step explanation:
because of math boom
How many miles are in 506,880 inches
Answer:
8 miles
Step-by-step explanation:
Answer:
8 miles
Step-by-step explanation:
1 mile:63360 inches
506880 divided by 63360 = 8
A restaurant bill is $21. You leave a 15% tip. Which of the following represents the amount a customer pays including the tip of 15% if the bill was dollars?
a. 0.15b
b. 15b
c. b + 0.15b
d. 1.15b
e. 1.015b
f. b + 15/100b
g. b + 0.15
A young couple just purchased a home for $180,000 in a nice area. The realtor suggested they can expect the value of their home to
Increase by 6% each year.
A function model that describes the value of the house is:
h(x) = 180000(1.06)*
where x is the number of years they have owned their home.
Using the model, how much should the house be worth after they have owned it for 5 years? (round to the nearest dollar)
A $954,000
B. $240,881
C. $190,800
D. $234,000
ILL GIVE BRAINLYIEST
Answer:
D. $234,000
Step-by-step explanation:
6% of $180,000 is $10,800
Multiply that times 5 years
$10,800x5=$54,000
add that value to the base price
$180,000+$54,000=$234,000
Round 5,278 to the nearest thousand.
If each edge of a cube is 5 cm, what is the volume of the cube?
Answer:
Volume =[tex]5^{3}[/tex] = [tex]125 cm^{3}[/tex]
PLS HELP!!!!
7x=28
x/9=3
5x=125
14=x÷2
8x=40
Answer:
7x=28
x = 4
x/9=3
x = 27
5x=125
x = 25
14=x÷2
x = 28
8x=40
x = 5
I need help ASAP!!!!!! Plzzzzzzzzzzz!!!!!!
Answer:
The second graph, the extreme v
Step-by-step explanation:
We know that y=4x passes through 4 on 1. When absolute valued, we add the graph y=-4x. This gives us the graph second to the right.
By the way, can you follow me?
Thanks
Can someone help me pls
Answer:
x = 10 units
Step-by-step explanation:
By theorem,
Perpendicular drawn from the center to the chord of a circle, bisects the chord.
AB = BC = 6
In right triangle ΔCBD,
By applying Pythagoras theorem,
CD² = BC² + BD²
= 6² + 8²
CD = [tex]\sqrt{36+64}[/tex]
= 10
Since, CD and the side measuring x are the radii of the circle D.
x = CD = 10 units
Given g(x) = -2x – 4, find g(6).
Answer:
x= -16
Step-by-step explanation:
g(x) =-2x-4
g(6)=-2(6)-4
g(6) = -12-4
g(6)=-16
The value of g(6) for the given function g(x) = -2x – 4 will be -16.
What is a linear function?A straight line on the coordinate plane is represented by a linear function.
A linear function always has the same and constant slope.
The formula for a linear function is f(x) = ax + b, where a and b are real values.
In another word, a linear function is a function that varies linearly with respect to the changing variable.
Given the function,
g(x) = -2x – 4
Now,
g(6) means value of g(x) at x = 6
So,
g(6) = -2(6) - 4
g(6) = -12 - 4 = -16
Hence "The value of g(6) for the given function g(x) = -2x – 4 will be -16".
For more about the linear function,
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b)Given 0º < x < 360° , solve for x in:
2 sin (2x - 30°) = √3.
Answer:
180°
because x is the mid pf 0° and 360°
Just need the answer
Answer:
It seems no one can eat just one potato ship
Step-by-step explanation:
Create an inequality, 5 less than a number is less than -2
Answer:
x - 5 < -2
Answer is there
which of the following shows the correct solution steps and solution to
3x - 2 = -11
Work out the perimeter of this semicircle.
Take it to be 3.142 and write down all of the digits given by your calculator.
18 cm give your answer in cm
Answer:
46.278cm
Step-by-step explanation:
(π+2)r
=πr+d
=9π+18=46.278cm
Explain why the t-distribution has less spread as the number of degrees of freedom increases. Choose the correct answer below. A. The t-distribution has less spread as the degrees of freedom increase because the variability introduced into the t-statistic becomes greater as n increases. B. The t-distribution has less spread as the degrees of freedom increase because, as n increases, s becomes closer to by the law of large numbers. C. The t-distribution has less spread as the degrees of freedom increase because, as n increases, less information is known about by the law of large numbers. D. The t-distribution has less spread as the degrees of freedom increase because, for large values of n, n30, the t-distribution and the normal distribution are the same.
Answer:
B. The t-distribution has less spread as the degrees of freedom increase because, as n increases, s becomes closer to sigma by the law of large numbers.
Step-by-step explanation:
The sample standard deviation, s gets considerably closer to the population standard deviation, σ, this trend follows the proposition of the law of large numbers whereby the mean or average value changes as the sample size, n increases. According to the law of large numbers, as the sample size increases, the sample mean gets continously closer to the population mean, sample standard deviation follows this same trend and thus variability or spread decreases as sample size increases.
The plausible reason that explains why the t-distribution will have a less spread as the number of degrees of freedom increases is because: as n increases, s becomes closer to by the law of large numbers. (Option B)
Note the following:
Based on the theorem of large number, the population mean and sample mean will get closer as the sample size increases.By implication, the sample standard deviation, s, and the population standard deviation, σ becomes closer too, thus, the spread will reduce as the sample size increases.Therefore, the plausible reason that explains why the t-distribution will have a less spread as the number of degrees of freedom increases is because: as n increases, s becomes closer to by the law of large numbers. (Option B)
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(ALGEBRA 2) Please help me with this question. Image is attached ( Please don't answer if you don't know )
9514 1404 393
Answer:
restrictions exclude parts of the domain where the function is not defined. On a graph, they are holes, or vertical asymptotes.the denominator might be (x² -4)they are different in the same way that adding and multiplying numerical fractions are differentStep-by-step explanation:
1. In general, restrictions on rational functions refer to values of the variable that make the denominator zero. The function will be undefined in that case. On a graph, such a location will show up as a "hole" or a vertical asymptote.
__
2. If ±2 are excluded from the domain, we expect factors of (x-2)(x+2) in the denominator. That is, the denominator will have a factor of (x²-4). (There may be other factors that do not have real zeros.)
__
3. A rational expression is a fraction the same as any other. The usual rules of addition, subtraction, multiplication, and division apply. For addition and subtraction, it can be useful to identify a common denominator. For multiplication and division, that is not so essential.
ILL GIVE THE BRAINLIEST pls help me with this question EVERYTHING IS IN THE PICTURE PLS HELP DUE TODAY IF YOU PUT A WRONG ANSWER ILL REPORT YOU FASTER THAN ASSIGMENT IS DUE
Answer:
300 inches cubed
Step-by-step explanation:
Attached is an image of the explanation. Sorry about the handwriting I was trying to write fast.
πr2/2 for a half circle
Half circle: 1.5 in
Answer:
3.5 in²
Step-by-step explanation:
Given:
Radius (r) = 1.5 in.
Formula for area of half circle = (πr²)/2
Required:
Area of the half circle
Solution:
Plug in the values into the formula for area of half circle.
Thus:
Area = (π × 1.5²)2
= 7.06858347/2
Area = 3.5 in² (nearest tenth)
Compute the exact value of the function for the given x-value without using a calculator. (2 points) f(x) = 5x for x = -1
Answer:
The exact value of the function for the given x-value is of -5.
Step-by-step explanation:
In this question, we compute the numeric value of the function f(x) for x = -1, that is, we replace every instance of x in the function by -1.
f(x) = 5x for x = -1
[tex]f(-1) = 5(-1) = -5[/tex]
The exact value of the function for the given x-value is of -5.
You need to make 8 servings of fried fish.
Each serving takes 7.5 ounces of flour.
How many ounces of flour do you need?
Answer: 60 ounces of flour
Step-by-step explanation:
8•7.5=60
Question Help
Find the (a) mean, (b) median, (c) mode, and (d) midrange for the data and then (e) answer the given question
Listed below are the jersey numbers of 11 players randomly selected from the roster of a championship sports team. What do the results tell us?
97 71 334 93 85 59 6 77 39 51
a. Find the mean
Answer:
(a) Mean = 55.9
(b) Median = 59
(c) Mode = No mode
(d) Midrange = 93
Step-by-step explanation:
(a) Mean
The formula for finding mean of an ungrouped data = Σx/n
Where
Σ is the sum of all the data
n is the number of data in the set
Therefore,
Σx=615
n = 11
Mean = 615/11
=55.9
(b) Median
Median is the middle number after arranging the set of data in either ascending or descending order.
By arranging the numbers, the middle is 59 which is the Median
(c) mode
Mode is the number that occurs most in a set of data.
From the given set of numbers, all the numbers appear once. Therefore, there is no mode
(d) Midrange
This is the difference between the biggest and the smallest number in a set of data.
Therefore,
the midrange = 97-4
=93
Name the postulate or theorem you can use to prove the triangles congruent.
Answer:
You can use the ASA Postulate to prove the Angle-Angle-Side Congruence Theorem. A flow proof is shown below. If two angles and a nonincluded side of one triangle are congruent to two angles and the corresponding nonincluded side of another triangle, then the triangles are congruent.
Step-by-step explanation:
Hope it helps! Correct me if I am wrong!
I'm sure about my answer!
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Its ok if you don't want to!
If a Play Station was bought for $558 after a 10%
discount, what was the original price of the Play
Station?
The original price of the play station is $620.
Given that, the cost of the play station=$558 and discount=10%.
We need to find the original price of the play station.
What is a discount?The definition of discount is reduced prices or something being sold at a price lower than that item is normally sold for.
Let the original price be x.
Now, x-10% of x=558
⇒x-0.1x=558
⇒0.9x=558
⇒x=$620
Therefore, the original price of the play station is $620.
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The weight of a small Starbucks coffee is a normally distributed random variable with a mean of 325 grams and a standard deviation of
10 grams. Find the weight that corresponds to each event. (Use Excel or Appendix C to calculate the z-value. Round your final
answers to 2 decimal places.)
3378
318.26
to
33174
a. Highest 10 percent
b. Middle 50 percent
c. Highest 80 percent
d. Lowest 10 percent
Answer:
a. Above 337.8 grams.
b. Between 318.25 grams and 331.75 grams.
c. Above 316.59 grams.
d. Below 312.2 grams
Step-by-step explanation:
Normal Probability Distribution:
Problems of normal distributions can be solved using the z-score formula.
In a set with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the z-score of a measure X is given by:
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.
Mean of 325 grams and a standard deviation of 10 grams.
This means that [tex]\mu = 325, \sigma = 10[/tex]
a. Highest 10 percent
This is X when Z has a pvalue of 1 - 0.1 = 0.9, so X when Z = 1.28.
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
[tex]1.28 = \frac{X - 325}{10}[/tex]
[tex]X - 325 = 10*1.28[/tex]
[tex]X = 337.8[/tex]
So 337.8 grams.
b. Middle 50 percent
Between the 50 - (50/2) = 25th percentile and the 50 + (50/2) = 75th percentile.
25th percentile:
X when Z has a pvalue of 0.25, so X when Z = -0.675.
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
[tex]-0.675 = \frac{X - 325}{10}[/tex]
[tex]X - 325 = -0.675*10[/tex]
[tex]X = 318.25[/tex]
75th percentile:
X when Z has a pvalue of 0.75, so X when Z = 0.675.
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
[tex]0.675 = \frac{X - 325}{10}[/tex]
[tex]X - 325 = 0.675*10[/tex]
[tex]X = 331.75[/tex]
Between 318.25 grams and 331.75 grams.
c. Highest 80 percent
Above the 100 - 80 = 20th percentile, which is X when Z has a pvalue of 0.2. So X when Z = -0.841.
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
[tex]-0.841 = \frac{X - 325}{10}[/tex]
[tex]X - 325 = -0.841*10[/tex]
[tex]X = 316.59[/tex]
Above 316.59 grams.
d. Lowest 10 percent
Below the 10th percentile, which is X when Z has a pvalue of 0.1, so X when Z = -1.28.
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
[tex]-1.28 = \frac{X - 325}{10}[/tex]
[tex]X - 325 = -1.28*10[/tex]
[tex]X = 312.2[/tex]
Below 312.2 grams
Plz help, would be nice if could answer by tonight buh I don’t need the answer till tomorrow night
Answer:
The correct option is (b).
Step-by-step explanation:
We need to simplify the given expression i.e. [tex](\dfrac{a^4}{b^2})^3[/tex].
We know that,
[tex](\dfrac{a^4}{b^2})^3=\dfrac{(a^4)^3}{(b^2)^3}[/tex]
Also,
[tex](x^a)^b=x^{ab}[/tex]
So,
[tex]=\dfrac{a^{12}}{b^6}[/tex]
So, the correct option is (b).
