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bixtya [17]
2 years ago
6

Show me how to solve this, please.

%5E%7B-6%7D%29" id="TexFormula1" title="(2.7 * 10^{-5}) / (9 * 10^{-6})" alt="(2.7 * 10^{-5}) / (9 * 10^{-6})" align="absmiddle" class="latex-formula">
Mathematics
2 answers:
rusak2 [61]2 years ago
8 0

Answer:

3

Step-by-step explanation:

2.7 * 10 ^-5 / 9 * 10 ^-6

First divide the numbers

2.7 / 9 = .3

Then divide the exponents

10^-5 / 10 ^ -6

When we divide exponents we subtract

10^(-5 - -6) = 10 ^1

.3 * 10 ^1

But scientific notation has a number between 1 and less than 10

Move the decimal 1 place to the left, so we subtract 1 from the exponent

3 * 10 ^ (1-1)

3 * 10 ^0

maxonik [38]2 years ago
8 0

Answer:

3

Step-by-step explanation:

= 2.7 * 10^ (- 5 - (- 6))/9

= 2.7 * 10/9

= 27/9

= 3

Hope this helps!

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I need help with this problem what fractions are equivalent to 4.05 repeating
kow [346]

Answer:

401/99 and 802/198

Step-by-step explanation:

Unfortunately the other answer to this question is wrong - you are looking for something equivalent to 4.0505050505050505, not just 4.05.

Typing the answer suggestions into a calculator you get:

405/99 = 4.0909090909 which is incorrect

401/99 = 4.0505050505 which is correct

81/33 = 2.45454545455 which is incorrect

802/198 = 4.0505050505 which is correct

405/100 = 4.05 which is incorrect as it doesn't repeat.

Hopefully this helps, let me know if you have any questions :)

6 0
2 years ago
Which of the following polygons can form a regular tessellation?
anyanavicka [17]

Answer:

option A.

Step-by-step explanation:

The regular polygons that can be used to form a regular tessellation are an equilateral triangle, a square, and a regular hexagon.

HOPE THIS HELPS.

3 0
3 years ago
Donald's car gets about 30 miles per gallon. About how many miles can Donald drive on 9.2 gallons of gas? At $3.15 a gallon, abo
denis-greek [22]
<span>30x9.2= 276 miles 9.2x3.15=$28.98 So the car can drive 276 miles if you put $28.98 of gas in it.</span>
8 0
2 years ago
Please answer this correctly
nikklg [1K]

Answer:

63.59

Step-by-step explanation:

If the perimeter is 32.13, that means it is equal to

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Solving this for r we get 9

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3 years ago
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Answer:

77

Step-by-step explanation:

6 0
2 years ago
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