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Mrrafil [7]
3 years ago
15

Solve x2 + 6x = 7 by completing the square. What is the solution set of the equation?

Mathematics
1 answer:
Vikentia [17]3 years ago
4 0
x^2+6x=7
x^2+6x+9=7+9
(x+3)^2=16
(x+3)^2=4^2
x+3=4\lor x+3=-4
x=4-3\lor x=-4-3
\boxed{x=1\lor x=-7}
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3 years ago
Please help!!!!!!!!!!!
vivado [14]

Answer:

101.5yd by 101.5yd size of wood

Step-by-step explanation:

Divide the ramp into its constituent shapes:

2 triangles( 3yd by 4.5yd by 5yd)

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2nd rectangle (the front) 11yd by 5yd

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Area of triangles = 2 * (1/2*b*h) = 2 * (0.5 * 4.5 * 3) = 2 * 6.75 yd² = 13.5yd²

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6 0
3 years ago
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7 0
3 years ago
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Enrique has to pay 80% of a $200 phone bill. Explain how to use equivalent ratios to find 80% of $200.
alisha [4.7K]

Answer: $160

Step-by-step explanation:

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Therefore : 80% of a 200 is the same

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5 0
4 years ago
Read 2 more answers
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