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aliina [53]
3 years ago
10

Ruben bought 6 new books for his collection by 12% How many books did he have before the purchase

Mathematics
2 answers:
lilavasa [31]3 years ago
8 0
He had 50 books before 
Nonamiya [84]3 years ago
3 0
50
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What is the value of x?<br><br> see attachment below
Kitty [74]

Answer:

  x = 31

Step-by-step explanation:

The perimeter is the sum of the equal-length sides:

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  63 = 3x -30 . . . . . . . . collect terms

  21 = x -10 . . . . . . . . . . divide by 3

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Nick randomly selects a digit from the set { 0 , 1 , 2 , . . . , 9 } and a letter from the set { A, B, C, . . ., Z } . Matthew w
Alex787 [66]

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There is only one way Matthew can get the correct answer, and there are 260 - 1 = 259 ways to get the wrong answer. We divide 259 over 260 to get the probability of getting the incorrect answer, which is 259/260.

If you need this fraction in decimal form, then use a calculator to find that 259/260 = 0.99615 approximately

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3 years ago
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murzikaleks [220]

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The solution of a system of linear equations is:

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A chef planning for a large banquet thinks that 2 out of every 5 dinner guest will order his soup appetizer he expects 800 guest
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Step-by-step explanation:

2/5= x/800

2/5 =.04  

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2/5 = 320/800

2/5 =0.4  is equivalent to 320/800=0.4

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