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Ratling [72]
2 years ago
9

Solve the equation -2(y - 1) = 9. -11/2 7/2 11/2 -7/2

Mathematics
2 answers:
olga_2 [115]2 years ago
7 0

Answer:

-7/2

Step-by-step explanation:

Use distributive property: a(b +c) = a*b +a*c

-2(y-1) = 9

y*(-2) - 1*(-2) = 9

-2y + 2  = 9  {Subtract 2 from each side}

-2y       = 9 - 2

      -2y = 7       {Divide each side by -2}  

         y = 7/-2

y = -7/2

guajiro [1.7K]2 years ago
3 0
Hope this helps !! Did it step by step

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The coordinate for the point M is (51/6, 13/6) if the point M on a segment with endpoints X (1, -2) and Y (10, 3) partitions the segment in a 5:1 ratio.

<h3>How to explain the information?</h3>

We have a line segment: XY with end coordinates X(1, -2) and Y(10, 3)

The coordinate for the point M:

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y = (-2+15)/6 =  13/6

Thus, the coordinate for the point M is (51/6, 13/6) if the point M on a segment with endpoints X (1, -2) and Y (10, 3) partitions the segment in a 5:1 ratio.

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A college parking lot is 140 ft long and 90 ft wide. The college wants to increase the area of the lot by 29% by adding strips o
Novay_Z [31]
The initial dimenssions of the park lot are:

length: 140 ft
width: 90 ft

initial area: 140 * 90 = 12,600 ft^2

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New length: 140 + x

New width: 90 + x

New area: (140+x)(90+x) = 16,254

Solution of the equation:

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Use the quadratic formula.

x = {-230 +/- √[ 230^2 - 4*1*(-3654) ]} / 2 =

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Answer: 15 ft


 
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Step-by-step explanation:

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