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Akimi4 [234]
3 years ago
9

Can someone help me with number 7 the circled one?

Mathematics
1 answer:
Ivenika [448]3 years ago
5 0
Your answer:
<span>Equation:
x(x+1) = 2(x+1)+77
-----

x^2+x = 2x+79
x^2-x-79 = 0
------
This quadratic does not have an integer solution.</span>
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27)

Equation of the existing water pipe's line

a) slope, m = rise / run = Δy / Δx = 3/2

b) y-intercept, b = 3

equation: y = mx + b = (3/2)x + 3

Equation of the new water pipe's line

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point (4,5) => y - 5 = (4/3) (x - 4)

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6 0
3 years ago
Solve the equation. 6 = 2(x + 8)- 5x<br> a. 2/3<br> b. 3 1/3<br> c. - 2/3<br> d. -3 1/3
Lemur [1.5K]
6 =2(x+8)-5x
6 =2x+16-5x
6-16=2x-5x
-10=-3x
10=3x
x=10/3
hence proved
6 0
3 years ago
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