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faust18 [17]
3 years ago
8

How do I solve for x? -7x-3x+2= -8x-8

Mathematics
2 answers:
s344n2d4d5 [400]3 years ago
8 0

-7x-3x+2=-8x-8

-10x+2=-8x-8

2=2x-8

10=2x

5=x

x=5

Delicious77 [7]3 years ago
4 0

-7X -3X+8X=-8-2

-2X=-10

X=5

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irina1246 [14]

Answer:

\sqrt{85}

Step-by-step explanation:

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3 years ago
(1) 3x + 9 and 5x + 15​
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Nora and her children went into a grocery store and she bought $11.95 worth of apples and bananas. Each apple cost $1.25 and eac
SIZIF [17.4K]

Answer: apples = 7 and bananas = 8

Step-by-step explanation:

Let x represent the number  of apples and y represent the number of banana,

and it was said that the total apples and bananas altogether is 15 , that is

x + y = 15 ................. equation 1

Also,

1.25x + 0.40y = 11.95 ............. equation 2

Solving the two equations simultaneously ,

From the first equation, x = 15 - y ........... equation 3

substitute equation 3 into equation 2, we have

1.25(15 - y) + 0.40y = 11.95

18.75 - 1.25y + 0.40y = 11.95

18.75 - 0.85y = 11.95

18.75 - 11.95 = 0.85y

6.8 = 0.85y

therefore y = 6.8/0.85

= 8

substitute y = 8 , into equation 3

x = 15 - 8

x = 7

Therefore , she bought 7 apples and 8 banana

4 0
3 years ago
G(80)= the square root of 80-7
dsp73
80-7 equals 73. The square root of can be found with a calculator. It is equivalent to 8.544
6 0
2 years ago
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