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andrey2020 [161]
3 years ago
15

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

Mathematics
1 answer:
ad-work [718]3 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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Answer:so the answer would be 11 dollars$ if she bought 9 tickets and a 5 dollar serice charge they would be 11$. put 11x9=99+5=104


Step-by-step explanation:


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Brandon checked his bank account online and saw that he had a -$15 balance so he made a deposit.Now his balance is $67.Find d, t
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A highway engineer specifies that a certain section of roadway covering a horizontal distance of 2km should have a downgrade of
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Answer:

0.16km

Step-by-step explanation:

A highway engineer wants to compute  the change in elevation of a section of road. The horizontal distance of this section of road is 2km and downgrade is 8%

The slope formula is given by

m=\frac{rise}{run}=\frac{x}{y}

m = 8% = 8/100

run = y = 2km

m =\frac{x}{y}

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Verification:

m=\frac{0.16}{2}= 0.08=8%%

3 0
3 years ago
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This is a double question. Part 1: 5(2x - 4) = 30. Solve for x Part 2: 5x + 3 - x + 2 = 41. Solve for x. I will mark Brainliest
Ainat [17]

Answer:

see below

Step-by-step explanation:

Part 1: 5(2x - 4) = 30.

Distribute

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Add 20 to each side

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Divide by 10

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x =5

Part 2: 5x + 3 - x + 2 = 41

Combine like terms

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Subtract 5 from each side

4x+5-5 = 41-5

4x = 36

Divide by 4

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Step-by-step explanation:

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