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2 years ago

2.1x10 to the -3 power x 2x10 to the second power

Mathematics

1 answer:

ad-work [718]2 years ago

5 0

Answer:

$4.2*10^{-1}$

Step-by-step explanation:

We want to simplify:

$2.1*10^{-3}\times 2*10^2$

We rewrite to get:

$2.1*2*10^2*10^{-3}\times10^2$

We now apply the laws of indices

$4.2*10^{-3+2}$

We simplify to get $4.2*10^{-1}$

We leave our final answer is scientific form.

The final answer is therefore:

$4.2*10^{-1}$

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At a zoo, the lion pen has a ring-shaped sidewalk around it. The outer edge of the sidewalk is a circle with a radius of 11 m. T

elixir [45]

Answer:

$\text{Exact area of the sidewalk}=40 \pi\text{ m}^2$

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Step-by-step explanation:

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Therefore, the exact area of the side walk is $40 \pi\text{ m}^2$

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2 years ago

A 24 inch board is cut into 3 pieces so that the second piece is twice as long as the first and the third is 3 times as long as

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Answer:

The answer to your question is: first piece = 4 in, second piece = 8 in, third piece = 12 in

Step-by-step explanation:

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total length = 24 inches

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second piece = 2x

third piece = 3x

Equation

x + 2x + 3x = 24

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Evelyn can run 3 miles in 40 minutes. Which equation can be solved to find m, the number of miles Evelyn can run in 60 minutes?

inna [77]

Answer:

m= 4.5 miles

Step-by-step explanation:

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7 0

2 years ago