4 years ago

I think of a number multiply it by 2, subtract 5 and multiply the result by 2

1 answer:

7 0

Call our original number n. Then here's what we did in an equation:
$(n*2-5)*2=2$

We can solve this for n:
$n*2-5=1$
$n*2=6$
$n=3$

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ASHA 777 [7]

Answer:

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Step-by-step explanation:

Given;

diameter of the hemisphere, d = 14 cm

radius of the hemisphere, r = d/2 = 14/2 = 7 cm

The volume of the hemisphere is calculated as;

$V = \frac{2}{3} \pi r^3\\\\V = \frac{2}{3} \times \frac{22}{7} \times (7 \ cm)^3\\\\V = 718.67 \ cm^3$

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