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s344n2d4d5 [400]

3 years ago

15

A tree is sold based on the circumference

2 answers:

nikklg [1K]3 years ago

7 0

Circumference of a circle = 2 x pi x radius

2 x pi x 4

= 25.13 inches

Hope this helps!

allochka39001 [22]3 years ago

3 0

25.12 is the answer !!!!!!

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PLS HELP HDJSJDJSJDJ

Sidana [21]

Answer:

your answers are correct

Step-by-step explanation:

4 0

3 years ago

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A car travels along a straight stretch of road. It proceeds for 16.2 mi at 57 mi/h, then 24.6 mi at 44 mi/h, and finally 45.1 mi

LekaFEV [45]

Answer:

The average velocity the entire trip was 43.25 mi/h

Step-by-step explanation:

In this case we have to calculate an average based on the miles traveled. First we have to calculate the total of miles traveled, then calculate the portion of the total travel of each and with this calculate the average speed during the trip. First the total miles traveled:

$TotalMiles=16.2+24.6+45.1=85.9$

Now the percentages:

At 57 mi/h were $\frac{16.2}{85.9}=0.19$

At 44 mi/h were $\frac{24.6}{85.9}=0.29$

At 37.8 mi/h were $\frac{45.1}{85.9}=0.52$

Now multiplying the speed by the portion and summing them we can have the average velocity:

$57*0.19+44*0.29+37.8*0.52=43.25$

The average velocity the entire trip was 43.25 mi/h

5 0

3 years ago

Can you help me to do this please?Finding the inverse of each function

marusya05 [52]

Let

$y=-\frac{3}{x+1}+2$

Find the equation in terms of y in the form x = f(y).

$\begin{gathered} y-2=\frac{-3}{x+1} \\ x+1=\frac{-3}{y-2} \\ x=\frac{-3}{y-2}-1 \end{gathered}$

Replace y by x in the right hand side, which will be the required inverse of the function.

$g^{-1}(x)=-\frac{3}{x-2}-1$

3 0

1 year ago

Using a 5% level of significance and a sample size of 25, what is the critical t value for a null hypothesis, H0: µ ≤ 100? Selec

nadezda [96]

Answer:

D. 2.064

Step-by-step explanation:

Number of sample (n) = 25, degree of freedom = n - 1 = 25 - 1 = 24, significance level = 0.05

The critical t value corresponding to 24 degrees of freedom and 0.05 significance level is 2.064

4 0

3 years ago

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What is a slope of a line

Sergio039 [100]

Answer:

The slope is how far up or down/ Left or right the line moves

Step-by-step explanation:

Think rise over run

Example 1y=1x+1

Slope is the number in front of the x

So 1y = <u>1</u>x +1

up 1 over 1

Negative numbers go down.

7 0

4 years ago