3 years ago

Use a calculator to find square root 61.6 to the nearest hundredth

Mathematics

1 answer:

Simora [160]3 years ago

4 0

D. 7.85
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What is the sum of x + 9?

vovikov84 [41]

So 30/48=15/(x+9)
this could be easily solved by recognizing the proportion (the other way is usiing full algebra and doing multiply both sides by 48(x+9) and then divide both sides by 30 then subtract 9)
30 is 2 times of 15
therefor 48 is 2 times of (x+9)
48=2 times (x+9)
divide both sides by 2
24=x+9
subtract 9
15=x

x=15

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3 years ago

Find both the sum and difference of the following rational numbers. 3/11, 13/5

anzhelika [568]

For 3/11 the difference is 8 the sum is 14.the difference of 13/5 is 8 the sum is 18

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3 years ago

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anastassius [24]

Answer:

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