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Ksivusya [100]
2 years ago
8

Which TWO answers indicate why it's important to round numbers?

Mathematics
2 answers:
Scilla [17]2 years ago
6 0
I think that you're answers here would be:
~Sometimes it helps in estimating an answer
And
~<span>Calculations may lead to long decimals, but money is in dollars and cents.
</span>Hope this helps you, and happy studying~!
~Mistermistyeyed.
Anni [7]2 years ago
4 0
<span>-Calculations may lead to long decimals, but money is in dollars and cents.
-Looks neater</span>
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Which expressions are equivalent to (13x+x−53x)−(−43x+2) ?
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Answer:

4x+2

Step-by-step explanation:

(13x+x−53x)−(−43x+2)

Group all the same variables on each side.

(-39x)-(-43x+2)

-39x+43x+2

4x+2

Hope this helps :)

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Step-by-step explanation:

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3 years ago
Of the following integers, which is the closest approximation to (2√+5√)2(2+5)2?A. 7B. 10C. 13D. 15E. 17
MAXImum [283]

Answer:

C. 13

Step-by-step explanation:

from on online source, the question should be placed as thus:

Of the following integers, which is the closest approximation to (√2 + √5)^2 ?

A. 7

B. 10

C. 13

D. 15

E. 17

This is known as Algebraic expression. So we have to expand to simplify further

using  this identity  th (a+b)^2 = a^2 + b^2 +2ab

(√2 + √5)^2 =

(√2 + √5)(√2 + √5)

................Expansion of the above

\sqrt{2}* \sqrt{2} +\sqrt{2}* \sqrt{5} +\sqrt{2} *\sqrt{5}+\sqrt{5} *\sqrt{5}

2 + 5 + 2√10

~ 2 +5 + 2(3)

C. 13

3 0
3 years ago
It takes a boat going upstream 5 hours to cover the same distance, as it would cover in 3 hours going downstream. What is the sp
Vaselesa [24]

Answer: 15 kilometers per hour

Step-by-step explanation:

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3 years ago
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