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notsponge [240]
3 years ago
10

Select all irrational numbers.

Mathematics
1 answer:
nasty-shy [4]3 years ago
6 0
Answer: √10, √27, and √99 are all the irrational numbers from the list.

√10 = √(5*2) = √5 * √2 ----> irrational

√27 = √(9*3) = (√9) * √(3) = 3√3 ----> irrational

√99 = √(9*11) = (√9) * (√11) = 3√11 -------> irrational

√(49) = 7 -----> rational

√(64) = 8 ----------> rational
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Combine like terms

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hope this helps
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Contact [7]

Let g = graph paper and r = ruler

1st equation: 5g + 30r = 40

2nd equation: 12g + 20r = 44

Multiply the 2nd equation by -1.5 to cancel out the r's

2nd equation: 12g + 20r = 44 x -1.5 = -18g - 30r = -66

Now add the 1st equation to that:

-18g + 5g = -13g

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The new equation becomes -13g = -26

Divide both sides by -13

g = -26 / -13

g = 2

This means each pack of graph paper cost $2.

Now replace g with 2 in the first equation to solve for the cost of a rule:

5(2) + 30r = 40

Simplify:

10 + 30r = 40

Subtract 10 from each side:

30r = 30

Divide both sides by 30:

r = 30 / 30

r = 1

Each rule cost $1.

7 0
3 years ago
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Answer:

6623.4375 feet²

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