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3 years ago

13

Find the mean of this set of numbers.

1 answer:

Lilit [14]3 years ago

4 0

The answer would C. You must remember for the mean you need to add up all of the numbers, then divide the answer by the number of numbers you have.
Ex:
5,3,7,2,1
All of these numbers added up together is 18.In order to find out the mean, we need to divide the answer(18) by 5 because there are 5 numbers.
Hope this helps!

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A field is to be fertilized at a cost of $0.07 per square yard. The rectangular part of the field is 125 yd long and the diamete

Dmitry [639]

Answer:

The cost of fertilizing the field is $\$437.96$

Step-by-step explanation:

we know that

The area of the figure is equal to the area of the rectangle plus the area of a complete circle (two semicircles)

Step 1

Find the area of the rectangle

The area of rectangle is equal to

$A=LW$

where

L is the length side of rectangle

w is the width side of the rectangle

In this problem we have

$L=125\ yd$

$W=D=40\ yd$

substitute

$A=125*40=5,000\ yd^{2}$

Step 2

Find the area of the circle

The area of the circle is equal to

$A=\pi r^{2}$

where

r is the radius of the circle

In this problem we have

$r=40/2=20\ yd$

substitute

$A=\pi (20)^{2}=1,256.64\ yd^{2}$

Step 3

Find the area of the figure

Adds the area of rectangle and the area of the circle

$5,000\ yd^{2}+1,256.64\ yd^{2}=6,256.64\ yd^{2}$

Step 4

Find the cost

Multiply the total area by $0.07 \frac{\$}{yd^{2} }$

so

$6,256.64*0.07=\$437.96$

5 0

3 years ago

Give that the triangles shown below are similar, what is the value of x

Dima020 [189]

X=14 because it is half of 28

Hope this helps

7 0

3 years ago

The number of nails in a 5 lb box is normally distributed with a mean of 325 nails and a standard deviation of 15 nails

wlad13 [49]

Answer: 192.. just took the test :)

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

Match each three-dimensional figure to its volume based on the given dimensions. (Assume T = 3.14.)

Arturiano [62]

A right circular cylinder with radius 4 cm and height 3 cm-150.72 cu cm

A cone with radius 5cm and height 12 cm-314 cu cm

A pyramid with base area 16 sq cm and height 30 cm-160 cu cm

A pyramid with a square base of length 3 cm and height 16 cm-48 cu cm

Explanation

volume of cylinder= $\pi r^2h$ $3.14*4^2*3=150.72$ cu cm

volume of cone= $1/3 \pi r^2 h$ =314 cu cm

volume of pyramid= $(base area*height)/3=(16*30)/3$ =160 cu cm

volume of pyramid=

= $(base area*height)/3\\square base length=3 cm\\base area=a^2 =3^2 =9\\volume=(9*16)/3=48cm^3$

7 0

3 years ago

A/4 - 5/6 = -1/2<br>a/4 - 5/6 = -1/2

quester [9]

Answer:

a = 4/3

yea thats the answer

5 0

2 years ago