3 years ago

Solve x2 − 7x = −12.

Mathematics

1 answer:

bezimeni [28]3 years ago

7 0

x^2 - 7x = -12

Add 12 to both sides.

Doing so, we get x^2 - 7x +12 = 0.

We now factor the left side.

Doing so, we get (x - 3) (x - 4) = 0.

Set each factor to 0 and solve for x.

x - 3 = 0

x = 3

x - 4 = 0

x = 4

Answer: Choice d

You might be interested in

Hello This is pretty Easy But i forgot the basics

DIA [1.3K]

Answer:

-3, -2 1/2, -2 2/5, -2 3/10, -2

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

In the rectagular prism shown below, GH is parallel to EF. If the equation of GH is 6y-x=2, could the equation of EF be 4=y-1/6x

ASHA 777 [7]

Answer:

Yes

Step-by-step explanation:

Given

GH:

$-6y - x = 2$

Required

Can EF be

$4 = y - \frac{1}{6}x$

First, we determine the slope of GH

$-6y - x = 2$

Solve for 6y

$6y = -x - 2$

Solve for y

$y = -\frac{1}{6}x - \frac{2}{6}$

$y = -\frac{1}{6}x - \frac{1}{3}$

An equation has the form:

$y =mx + b$

Where

$m = slope$

By comparison:

$m = -\frac{1}{6}$

Next, determine the slope of EF

$4 = y - \frac{1}{6}x$

Make y the subject

$y = -\frac{1}{6}x + 4$

The slope is:

$m = -\frac{1}{6}$

Compare the slopes of both lines.

$m=m = -\frac{1}{6}$

Since they have the same slopes, then the equation of EF is possible

4 0

3 years ago

Which is greater 0.6 or 0.60

Nuetrik [128]

They are equal the 0 one the end of 0.60 doesnt mean anything

8 0

3 years ago

Read 2 more answers

Tom buys a new phone service. It costs $20 to install, and then costs $15 a month. Write an equation to show the cost of the pho

RoseWind [281]

Answer:

Y=$15x+$20

Step-by-step explanation:

4 0

3 years ago

Which of the following is the shape of a cross-section of the figure shown below?

Anna71 [15]

Answer:

B. Pentagon

Step-by-step explanation:

Pentagon (figure having 5 sides) is the shape of the cross-section of the figure.

5 0

3 years ago