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Naddik [55]
2 years ago
13

What is the sum of 2/5 and 2/4

Mathematics
1 answer:
Helga [31]2 years ago
5 0
9/10....................................
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The estimated answer to a multiplication problem is 800,000. Which of the following expressions could result in this answer? Exp
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Answer:

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Step-by-step explanation:

This is a problem in which you need to measure your understading of "orders of magnitude."

If the estimated answer is 800000 that means that we are looking at a multiplication in the "order of" 8*10^5

You need to look at the "orders of magnitude" of the things you're multiplying. In the first case, we have 8146*12 that would be "of the order of" 8*10^3 times 10^1. So the whole multiplication would "of the order of" 8*10^4 or near 80000

The correct answer, 8,146 x 121, is because it's "of the order of" 8*10^3 times 10^2 and the gives us the 8*10^5 we need.

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A graphing calculator or spreadsheet program can do this for you. Below is a plot from the Desmos on-line graphing calculator.

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What is the square root of 18457
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