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Karolina [17]
3 years ago
9

Simplify for a = 3, b = -4 and c = -1. 9−a(c+5)

Mathematics
2 answers:
sesenic [268]3 years ago
8 0
9-3(-1+5)

9+3-15

9+3=12-15=-3
Otrada [13]3 years ago
5 0
9 - a (c + 5)
9 - 3 * 4
9 - 12
solution is -3
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Answer:

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Step-by-step explanation:

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3 years ago
Please help! I get how to do the first part I just don't get how to do the second part.
xz_007 [3.2K]

9514 1404 393

Answer:

  WX = 33

  (x, y) = (2, 10)

Step-by-step explanation:

The hash marks tell you WX is a midline, so has the measure of the average of the two bases.

  WX = (PQ +SR)/2 = (27 +39)/2 = 66/2

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The hash marks also tell you ...

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  y +4x = 18 . . . . . . substitute the given expressions

and also

  QX = XR

  2y +x = 22 . . . . . substitute the given expressions

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If you solve the first equation for y, you get ...

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Substituting that into the second equation gives ...

  2(18-4x) +x = 22

  36 -7x = 22 . . . . . . . simplify

  14 = 7x . . . . . . . . . . . add 7x-22 to both sides

  2 = x . . . . . . . . . . . . divide by 7

  y = 18 -4(2) = 10 . . . find y using the above relation

The values of x and y are 2 and 10, respectively.

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My favorite "quick and dirty" way to solve a set of linear equations is using a graphing calculator. It works well for integer solutions.

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3 years ago
A student guesses on every question of a multiple choice test that has 8 questions
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Ok? Where’s the rest of the question.
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Solve for c 6/15=2/c
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Audrey and Lauren began reading a novel on the same day. Audrey reads 15 pages a day and Lauren reads 5 pages a day. If Audrey i
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Lauren is on page 25. Since 75/15 is 5 that means she read fro 5 days. And they started at the same time so 5*5 is 25
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3 years ago
Read 2 more answers
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