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ella [17]
3 years ago
6

What's the product of 21 and (6.3 times 10-4)

Mathematics
1 answer:
lubasha [3.4K]3 years ago
3 0
21(6.3 x 10 - 4).  Remember PEMDAS.  Everything done in parenthesis is done first.

Within the parenthesis, there is multiplication and subtraction.  In PEMDAS, multiplication/division comes before addition/subtraction, so 6.3 x 10 = 63.
63 - 4 = 59
21(59) = 1,239.
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Answer:

x=6

Step-by-step explanation:

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Svet_ta [14]

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3 years ago
What is the solution set of -|-x| = -12
ozzi

Answer:

{-12,12}

Step-by-step explanation:

-|-x| = -12 multiply both sides by -1

|-x| = 12 apply rule for solving absolute value equations

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7 0
3 years ago
Apple estimates that 2.8 million square feet of the building is used for office space. Is their estimate reasonable? Below is th
Virty [35]

The estimate that 2.8 million square feet of the building is used for office space is not reasonable

<h3>How to determine the true statement?</h3>

From the plan, the width of the building is:

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So, the estimate of the building area is:

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So, we have:

Area= 4 * 3.14 * 230²

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Area= 664424

The above value cannot be approximated to 2.8 million

Hence, the estimate used for office space is not reasonable

Read more about areas at:

brainly.com/question/24487155

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