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Akimi4 [234]
3 years ago
10

Solve the problem. give that f(x)=4x²-7x;find all values of a such that f(a)=15 HELP!!!

Mathematics
1 answer:
joja [24]3 years ago
7 0
4x^2-7x=15\\
4x^2-7x-15=0\\
4x^2-12x+5x-15=0\\
4x(x-3)+5(x-3)=0\\
(4x+5)(x-3)=0\\
x=-\frac{5}{4} \vee x=3
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Which of the following is a linear equation?
Sedbober [7]

2x - 3y = 7 can be rewritten as y = 2/3x - 7/3, therefore, the equation that is a linear equation is: C. 2x - 3y = 7.

<h3>What is a Linear Equation?</h3>

A linear equation is expressed in the slope-intercept form as y = mx + b.

2x - 3y = 7, rewritten in slope-intercept form would be:

-3y = -2x + 7

y = -2x/-3 + 7/-3

y = 2/3x - 7/3

m = 2/3 and b = -7/3

Therefore, the equation that is a linear equation is: C. 2x - 3y = 7.

Learn more about linear equation on:

brainly.com/question/15602982

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2 years ago
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3 years ago
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Maslowich

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Area of triangle = 1/2*b*h

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