3 years ago

The radius of a sphere with a surface area of 36pi square meters

Mathematics

1 answer:

Marysya12 [62]3 years ago

5 0

Answer:

Step-by-step explanation:

surface area=4πr²=36π

r²=9

r=3

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One solution of x^2-25=0 is 5 what is the other solution

zepelin [54]

Add 25 to both sides:

$x^2 = 25$

Square root both sides.

When you square root a perfect square, you will get a plus/minus result:

$\sqrt{25} = \pm 5$

$x = \pm 5$

$\boxed{x = -5} \land \boxed{x = 5}$

The other solution to this answer is x = -5.

5 0

3 years ago

A company that sells widgets has to pay 1000 in one-time equipment fees and then it costs $\$0.50$ for each widget it makes. It

IgorLugansk [536]

Answer:

$445$

Step-by-step explanation:

$\text{Profit}=\text{Price}-\text{Cost}\\\text{Profit}=2.75-50=2.25\\\text{In order to make back the starting amount we need to sell n lots of widgets.}\\2.25n\geq 1000\\n\geq \frac{1000}{2.25}\\n\geq 444.444444\\\text{You can't sell a fraction of products, so you need to round it up to the nearest number.}\\n=445$