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schepotkina [342]

3 years ago

11

A tree 63 ft high casts a 38 ft shadow. How tall is a tree that casts a 52 ft shadow at the same time of the day? (to the neares

t tenth

1 answer:

Mrac [35]3 years ago

3 0

52/38 = 1.368

1.368 x 63 = 86.21

tree is 86.2 feet high

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Suppose a population has a mean of 7 for some characteristic of interest and a standard deviation of 9.6. A sample is drawn from

valkas [14]

Answer: A. 1.2

Step-by-step explanation:

Given : Sample size : n= 64

Standard deviation: $\sigma=9.6$

The formula to find the standard error of mean is given by :-

$S.E.=\dfrac{\sigma}{\sqrt{n}}\\\\\Rightarrow\ S.E.=\dfrac{9.6}{\sqrt{64}}\\\\\Rightarrow\ S.E.=\dfrac{9.6}{8}=1.2$

Therefore, the standard error of the mean= 1.2

Hence, A is the right option.

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2 years ago

Please teache me how to solve this<br> 60.6 x 9.9 =

yanalaym [24]

<span>599.94 is the answers sir!</span>

3 0

2 years ago

A cone has a diameter of 3 inches. The cone holds 12 cubic inches of water, to the nearest inch what is the height of the cone?

tatiyna

C is the answer hope this helps

7 0

3 years ago

Find the surface area of the figure. ft

Lapatulllka [165]

Answer:

486

Step-by-step explanation:

Hello!

To find the surface area of a cube we use the equation

$S = 6a^{2}$

S is the surface area

a is the side length

Put what we know into the equation

$S = 6*9^{2}$

Solve

S = 6 * 81

S = 486

Hope this Helps!

3 0

3 years ago

Read 2 more answers

An envelope is 4 cm longer than it is wide. the area is 96 square centimeters. find the length and width.

Dennis_Churaev [7]

<span>So, L*W=A Because it is 4 cm longer, L=W+4 Because the area is 96, LW=96 Substitute to get W(W+4)=96 Multiply it out. W^2+4W-96=0 By solving the quadratic, W+12(W-8)=0 so either W+12 or W-8 is zero. The width must be positive, so the width is 8. Therefore the length is 12.

Hope this helps.</span>

4 0

2 years ago