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nikdorinn [45]
3 years ago
14

Solve for x. Write both solutions, separated by a comma. 8x^2+7x-1=0

Mathematics
1 answer:
Ivan3 years ago
7 0

Answer:

<h2>x = 1/8 , - 1</h2>

Step-by-step explanation:

8x² + 7x - 1 = 0

Rewrite 7x as a difference

That's

8x² + 8x - x - 1 = 0

Factorize

8x( x + 1) - ( x + 1) = 0

(8x - 1)( x + 1) = 0

8x - 1 = 0 x + 1 =0

8x = 1 x = - 1

x = 1/8

The solutions are

<h3>x = 1/8 , - 1</h3>

Hope this helps you

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Multiply the first equation by 2
8x+6y=14

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9x-6y=54

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17x= 68
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4(4)+3y=7
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7 0
3 years ago
Mia wants to purchase a pair of jeans. The first time she saw the jeans, they were priced at $36. When she goes back to make the
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Answer: D

Step-by-step explanation:

1. Subtract 36 to 28.80

2. Divide the answer to the first price (36.00)- 7.5 divided by 36.00 or 36

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So if... you divide 7.5 divided by 36, you get the decimal of 0.2, and when you move the decimals two places only, you get your answer of 20%.

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8 0
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What is the correct expansion of (4x-2)(2x^2+3)
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8x^3-4x^2+12x-6

Step-by-step explanation:

5 0
4 years ago
Read 2 more answers
Angle b is three times the measure of angle a. Angle c is two times the measure of angle a. What are the measures of all the ang
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4 0
3 years ago
PLEASE HELP!!!! 50 POINTS
Leni [432]

First you need to rewrite the equation in the form y = mx +b:

2y = x-4

Divide all terms by 2:

2y / 2 = x/2 - 4/2

Simplify:

y = 1/2x - 2

The slope of the line is 1/2.

A perpendicular line has a slope of the negative reciprocal, which would be -2.

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3 0
3 years ago
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