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Scilla [17]
4 years ago
13

Use the quadratic formula to solve the equation x2+7x​

Mathematics
1 answer:
monitta4 years ago
4 0

The solution of the equation x2+7x​ is 0, -7 using the quadratic formula.

Step-by-step explanation:

x2 + 7x = 0

-b  ± √ b2 - 4(ac)/ 2a

substitution,

a = 1, b = 7, c = 0

= -7  ± √(7)2 - 4(1 x 0) / 2 x 1

= - 7   ± 7 / 2

x = 0 , -7

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What is 2f + 4f + 2 – 3 evaluated at f = 3?
mojhsa [17]

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17

Step-by-step explanation:

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3 years ago
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If a line has a slope of 4 and goes through the point open parentheses short dash 1 comma 1 close parentheses, then the equation
san4es73 [151]

A line is a one-dimensional shape that is straight, has no thickness, and extends in both directions indefinitely. The equation of the line will be y =4x+5. Thus, the correct option is C.

<h3>What is the equation of a line?</h3>

A line is a one-dimensional shape that is straight, has no thickness, and extends in both directions indefinitely. The equation of a line is given by,

y =mx + c

where,

x is the coordinate of the x-axis,

y is the coordinate of the y-axis,

m is the slope of the line, and

c is the y-intercept.

Given the slope of the line is 4 and it goes through (-1,1), therefore, the equation of the line will be,

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Substitute the value of points,

1 = 4(-1) + c

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Hence, the equation of the line will be y =4x+5. Thus, the correct option is C.

Learn more about Equation of Line:

brainly.com/question/21511618

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