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S_A_V [24]
2 years ago
6

Which equation shows the value of -2/5-(-9/15)

Mathematics
2 answers:
enot [183]2 years ago
7 0

Answer:

D.

Step-by-step explanation:

-2/5 - (-9/15) = -2/5 + 9/15.

both of those equations are equivalent.

hope this helps.

atroni [7]2 years ago
3 0
-2/5+9/15=3/15 is the answer to this problem hope it helps.
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It is B) 3/4a-1/2b-3

Step-by-step explanation:

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3 tens+7 thousand+5 ten thosands+2ones +6 hundreds
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Solve the system of equations by substituion,<br> -5x + y = 3<br> 7.5x - 1.5y = 3
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The first equation, make the y as the subject. y = 3 + 5x, then substitute y in the second equation and you will get the value of x. then, substitute the x in the first equation (y = 3 + 5x)
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3 years ago
Write 4 3/7 as a decimal.
Citrus2011 [14]
Hi!

There are two ways to do this. 

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3 0
2 years ago
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Solve the proportions:
IRINA_888 [86]

<u>Answer:</u>

  • 6. 6.75
  • 7. 27
  • 8. 92/17
  • 9. 49

<u>Step-by-step explanation:</u>

<u>- Question 6 -</u>

  • 9/16 = x/12
  • => 16x = 12 x 9
  • => 16x = 108
  • => x = 6.75

Hence, <u>the value of x in this proportion is 6.75.</u>

<h3>_______________________________</h3>

<u>- Question 7 -</u>

  • -3 + x/18 = 12/9
  • => -3/18 + x/18 = 4/3
  • => x/18 = 4/3 + 1/6
  • => x/18 = 8/6 + 1/6
  • => x/18 = 9/6
  • => x = 9/6 x 18
  • => x = 27

Hence, <u>the value of x is 27</u>

<h3>_______________________________</h3>

<u>- Question 8 -</u>

17/15 = 10/2x - 2

=> 17(2x - 2) = 150

=> 34x - 34 = 150

=> 34x = 184

=> x = 184/34

=> x = 92/17

Hence, <u>the value of x is 92/17</u>

<h3>_______________________________</h3>

<u>- Question 9 -</u>

  • x - 16/x + 6 = 3/5
  • => 5(x - 16) = 3(x + 6)
  • => 5x - 80 = 3x + 18
  • => 2x = 98
  • => x = 49

Hence, <u>the value of x is 49.</u>

<h3>_______________________________</h3>

Hoped this helped.

3 0
2 years ago
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