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Ira Lisetskai [31]
3 years ago
7

Shoe sizes are normally distributed with a mean of 9. If Jenna has a shoe size of 6 and her z-score is -2, find

Mathematics
1 answer:
Oksi-84 [34.3K]3 years ago
8 0
-2. The step by step is 882x028 and that equals I don’t know
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Find the volume of the sphere that has a surface area of 720 in2. Round your answer to the nearest tenth.
Misha Larkins [42]

9514 1404 393

Answer:

  1816.7 in³ ≈ 29,769.6 cm³

Step-by-step explanation:

The surface area of a sphere is given by the formula ...

  A = 4πr²

Then the radius is ...

  r = √(A/4π) = (1/2)√(A/π)

The volume of a sphere is given by the formula ...

  V = 4/3πr³

Using the above value of r, we find the volume to be ...

  V = (4/3)π(1/2)³(A/π)^(3/2) = 1/6√(A³/π) ≈ 1816.7 in³

__

The answer is requested in cm³. The conversion factor is (2.54 cm/(1 in))³, so this volume is ...

  (1816.7 in³)·(2.54 cm/(1 in))³ = 29,769.6 cm³

_____

<em>Additional comment</em>

We suspect an error in the problem statement, as the given units are square inches and the requested volume is in cubic centimeters. Usually, there would be an explicit statement regarding the necessity for units conversion.

7 0
3 years ago
4a−2(3a+8)=6 what is the answer
Tcecarenko [31]

Answer:

\boxed{ \bold{ \huge{ \boxed{ \sf{a =  - 11}}}}}

Step-by-step explanation:

\sf{4a - 2(3a + 8) = 6}

Distribute 2 through the parentheses

\longrightarrow{ \sf{4a - 6a - 16 = 6}}

Collect like terms

\longrightarrow{ \sf{ - 2a - 16 = 6}}

Move 16 to right hand side and change it's sign

\longrightarrow{ \sf{ - 2a = 6 + 16}}

Add the numbers: 6 and 16

\longrightarrow{ \sf{ - 2a = 22}}

Divide both sides by 2

\longrightarrow{ \sf{ \frac{ - 2a}{ - 2}  =  \frac{22}{ - 2}}}

Calculate

\longrightarrow{ \sf{a =  - 11}}

Hope I helped !

Best regards! :D

4 0
4 years ago
The graph of f(x) = x^2 was transformed to create a graph g(x) =f(x)−3.
IrinaVladis [17]

Answer:  your an ARMY right? :) I am too!

Step-by-step explanation: btw I think the answer is A :D

6 0
3 years ago
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Misha wants to know how much wrapping paper is needed to cover a box with the dimensions shown.
Oliga [24]

Answer:

D. 136 square inches :)

Step-by-step explanation:

6 0
3 years ago
3x + 2y = 8<br> -4y - 6x = -8
siniylev [52]

Answer:hg68

Step-by-step explanation:

4 0
3 years ago
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