A

Mathematics

1 answer:

Nastasia [14]2 years ago

5 0

Answer:

$42,400

Step-by-step explanation:

You might be interested in

Sarah is saving to buy a new phone. She needs $150, and she has already saved $63. Write an equation to model this situation. Le

Lena [83]

Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions here.
If Sarah is saving to buy a new phone. She needs $150, and she has already saved $63 then the equation should be $63 + x = $150

4 0

3 years ago

How to solve the problem

Lelechka [254]

The scale factor is 2, you find this answer by finding the number that multiplys with the smaller number in order to equal larger one

4 0

3 years ago

C 2/n=21<br> What is answer for it?

nekit [7.7K]

Answer:

Step-by-step explanation:

4 0

3 years ago

on monday 3/4 inch of snow fell on tuesday 5/8 inch of snow fell write a statement that correctly compares the snow amounts

rodikova [14]

I'm not sure of the answer, but I think it might be 3/4>5/8 because 3/4 is a greater amount than 5/8

6 0

3 years ago

A hemisphere has an area of 256 pi cm^2. What is its volume?

Amanda [17]

$\bf \begin{array}{llll}
\textit{surface area of a sphere}\\\\
A=4\pi r^2
\\\\\\
\textit{a hemisphere is half that}\\\\
A=\cfrac{4\pi r^2}{2}\implies A=2\pi r^2
\end{array}\qquad r=radius
\\\\\\
\textit{now, we know the area is }256\pi \implies 256\pi =2\pi r^2
\\\\\\
\cfrac{256\pi }{2\pi }=r^2\implies \sqrt{128}=r\implies \boxed{8\sqrt{2}=r}
\\\\
-----------------------------\\\\$

$\bf \textit{volume of a sphere}\\\\
V=\cfrac{4}{3}\pi r^3\qquad r=radius
\\\\\\
\textit{a hemisphere is half that}\\\\
V=\cfrac{\frac{4}{3}\pi r^3}{2}\implies V=\cfrac{\frac{4\pi r^3}{3}}{\frac{2}{1}}\implies V=\cfrac{4\pi r^3}{3}\cdot \cfrac{1}{2}
\\\\\\
V=\cfrac{2\pi r^3}{3}
\\\\\\
\textit{now, we know the radius is }8\sqrt{2}\implies V=\cfrac{2\pi (8\sqrt{2})^3}{3}
\\\\\\
V=\cfrac{2\pi (8^3\sqrt{2^3})}{3}\implies V=\cfrac{2\pi \cdot 512\cdot 2\sqrt{2}}{3}
\\\\\\
\boxed{V=\cfrac{2048\pi \sqrt{2}}{3}}$

7 0

3 years ago