This is a simple ratio. x : y. So x = 21 when y = 5.
21 : 5.
x : 25
So you are timesing each side by 5
So 21 x 5 = 105.
x = 105
Answer:
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Step-by-step explanation:
Given


Where:


Required
The height
The volume is calculated as:

This gives:


Rewrite as:

So, we have:

Take cube roots
![h = \sqrt[3]{455cm^3}](https://tex.z-dn.net/?f=h%20%3D%20%5Csqrt%5B3%5D%7B455cm%5E3%7D)
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Answer:
10
Step-by-step explanation:
Negative times a negative is a positive.
so 12-2=10
1.) 17? (8^2=64) - (9^2=81) 81-64= 17
2.) 625? (40/8=5 5^2=25 25x5= 625
3.) 0? (24/4=6) 6^2=36/6=6-6=0
I think these are correct. Sorry if they are not. The only way it would be incorrect is if I did the steps out of order. I don’t think I did but it’s possible. Good luck! Sorry, Hope this helps
You can you 72 which would make 2/8 18/72 and 3/9 24/72 which makes the sum 42/72.