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Sveta_85 [38]
3 years ago
13

Can anyone help me ?

Mathematics
1 answer:
gtnhenbr [62]3 years ago
7 0
The formula for the volume of a sphere is V=(4/3) (pi) r^3. if r is doubled then you get 2r as the radius and V=(4/3) (pi) * 8r^3 so the volume is eight times bigger than the original  r  value. if r is tripled the r =3r  and (3r)^3 so the volume is 27 times bigger. If r  is multiplied by  n  the radius is  nr  and (nr)^3 =n^3  r^3, Therefore, the volume is n^3 times bigger than the original.
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Reinel saves 30% of every pay check. His paycheck last week was 560$. How much did Reniel save last week?
dsp73

I’m not sure if you are doing ratios and proportion but this is my answer:


30/100 = n/560

30 x 560 = 16,800

16,800 ÷ 100 = 168

Reinel saves $168 last week




3 0
3 years ago
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Mattias bought a package of 5 notebook for $ 13.95. what is the unit price per notebook
Over [174]
Price per notebook=price/notebook
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price=13.95
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answer is $2.79 per notebook
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3 years ago
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4 years ago
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the correct answer is your third choice.

5 0
3 years ago
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mihalych1998 [28]
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I hope this helps!
5 0
3 years ago
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