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3 years ago

Questiom 40 plzzzz answer nd explain?

Mathematics

2 answers:

zlopas [31]3 years ago

8 0

In this problem, it is asking you to find the circumference of the circle. The equation to the circumference of a circle is: Circumference=2πr.
The radius is the length of the leash: 12
The equation you would have to follow is: C=2π(12) or C=2(3.14)(12)
The correct answer is: A.)74.5 feet.
Ella walked 74.5 feet

lesya692 [45]3 years ago

5 0

I am not positive but i think that its the last one. Any one else???

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Please help ASAP!! I mark brainliest.

gulaghasi [49]

Answer:

Step-by-step explanation:

8 0

3 years ago

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Y = 5+5(x-8) Can someone please solve this?

vekshin1

y = 5+5(x-8)

y = 5 + 5x - 40

y = 5x - 35

7 0

4 years ago

4 decimals whose sum is 2.35

Sedbober [7]

Answer:

One way you can solve this problem would be to take 2.35/4

2.35/4= .5875

Then you can add .5875 + .5875 +.5875 +.5875

Which equals 2.24

.5875 + .5875 +.5875 +.5875

Hope this helps ;)

6 0

3 years ago

A fourth grade class of 28 students is given a standardized math test. The mean score of the 12 boys is 25 with a standard devia

Mashcka [7]

Answer:

The standard error for the sampling distribution is 1.323.

Step-by-step explanation:

Let X = scores of girls and Y = scores of boys.

The information provided is:

$\bar x=24\\s_{x}=4\\n_{x}=16\\\bar y=25\\s_{y}=3\\n_{y}=12$

As the population standard deviations are not known, use a pooled standard deviation to estimate the standard error of the sampling distribution.

The formula of pooled standard deviation is:

$S_{p}=\sqrt{\frac{s_{x}^{2}}{n_{x}^{2}}+\frac{s_{y}^{2}}{n_{y}^{2}}}$

Compute the standard error for the sampling distribution as follows:

$SE=\sqrt{\frac{s_{x}^{2}}{n_{x}^{2}}+\frac{s_{y}^{2}}{n_{y}^{2}}}=\sqrt{\frac{4^{2}}{16}+\frac{3^{2}}{12}}=\sqrt{1+\frac{9}{12}}=\sqrt{\frac{21}{12}}=1.323$

Thus, the standard error for the sampling distribution is 1.323.

7 0

3 years ago

A shirt is on sale for 15% off the original price of 27$. what is the sale price of the shirt

AlekseyPX

15% of 27:
0.15 x 27 = 4.05

27 - 4.05 = 22.95

The sale price is $22.95

6 0

3 years ago

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