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3 years ago

Which equation could be used to solve y 2+7y=18 by factoring?

Mathematics

2 answers:

oee [108]3 years ago

5 0

<span>(y + 9)(y - 2) = 0 would be the correct answer .</span>

Dennis_Churaev [7]3 years ago

4 0

For this case we have the following equation:

$y ^ 2 + 7y = 18$

Rewriting the equation we have:

$y ^ 2 + 7y-18 = 0$

Then, we must factor the equation:

We are looking for two numbers that are equal to 7 and multiplied equal to -18.

We have then:

$(y + 9) (y-2) = 0$

Answer:

An equation that could be used to solve $y^2 + 7y = 18$ by factoring is:

$(y + 9) (y-2) = 0$

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Please help.....25 points!!!

kenny6666 [7]

Answer:

Step-by-step explanation:

We want to find the inverse of g(x). One way to do this is to switch the g(x) and x in the original equation and then solve for g(x); that will give you the inverse.

Here, $g(x)=\frac{3}{5} x-9$ . Switch the g(x) and x to become: $x=\frac{3}{5} g(x)-9$ . Now solve for g(x) by isolating it:

$x=\frac{3}{5} g(x)-9$

$x+9=\frac{3}{5} g(x)$

$\frac{5}{3} * (x+9)= g(x)$

$g(x)=\frac{5}{3} x+15$

Thus, the answer is C.

Hope this helps!

3 0

3 years ago

Read 2 more answers

Joe and Josh each want to buy a video game. Joe has $14 and saves $10 a

Aleks [24]

Answer:

Number of week they have same amount = 4 week

Step-by-step explanation:

Given:

Amount Joe have = $14

Joe's saving per week = $10

Amount Josh have = $26

Josh saving per week = $7

Find:

Number of week they have same amount

Assume;

Number of week they have same amount = a

So,

(14 + 10a) = (26 + 7a)

3a = 12

a = 4

So,

Number of week they have same amount = 4 week

3 0

3 years ago

Hey can I have some help with this I am very confused

aniked [119]

m<5=40°

Reason-Its Given

m<2=140

Reason-Given

<5 and <2 are linear pair(looked properly in diagram) Hence they are supplementary.

<5 and 2 are same side interior angles (Clearly shown on diagram .

We can call them co responding interior angles and their sum will be 180 if lines are parallel

a||b

Let's verify

Let the angle below <1 be <3

Now

<2+<3=180

<5+<4=180

<5=<2

$\\ \sf\longmapsto$

Hence verified

4 0

3 years ago

Does the equation I = 3 represent a function? Choose one option from each drop-down menu to explain your answer. For an equation

Inga [223]

Answer: x=3 isn't a function because multiple different inputs have the same outputs

Step-by-step explanation:

I dont know how to answer the first question since the dropdown is shown

3 0

3 years ago

Enter an inequality that represents the graph in the box.

ANTONII [103]

The inequality that represents the graph in the box is

$y>-3x+6$

Given :

The graph of the linear inequality

Lets pick two points from the graph to frame the linear equation

Slope intercept form of the equation is

$y=mx+b$

Where m is the slope and b is the y intercept

y intercept is (0,6) from the graph

so b=6

Now we find out slope m using formula

Pick two points (0,6) and (2,0)

$slope = \frac{y_2-y_1}{x_2-x_1} \\m=\frac{0-6}{2-0} =-3$

m=-3

So the equation is $y=-3x+6$

Now we check the inequality sign by testing any point on shaded area

lets pick (4,0)

lets plug in 4 for x and 0 for y

$y=-3x+6\\0=-3(4)+6\\\\0=-6\\0>-6$

The inequality for the given graph is

$y>-3x+6$

we cannot use >= sign because we have dotted lines

Learn more : brainly.com/question/17203372

5 0

3 years ago