2 years ago

Solve the equation 40=2x2+2x by factoring.

Mathematics

1 answer:

just olya [345]2 years ago

5 0

Step-by-step explanation:

please give me brainlest and follow me

You might be interested in

Starbucks opened two new locations. Location A costed $800 to open but makes $100 a month. Location B costed $1200 to open but m

WITCHER [35]

Answer:

I think it is A that will take longer but im not 100 percent sure

Step-by-step explanation:

First write an equation:

Location A- 800+100x

Location B- 1200+200x

Then you need to plug numbers in for x

3 0

3 years ago

Solve for d 6d -11/2 = 2d -13/2. Please answer quickly

Slav-nsk [51]

6d -11/2 = 2d -13/2

Subtract 2d from both sides

6d -11/2 - 2d = 2d -13/2 - 2d

Simplifying

4d -11/2 = -13/2

Add 11/2 to both sides

4d -11/2 + 11/2 = -13/2 + 11/2

Simplifying

4d = -2/2

4d = -1

Divide both sides by 4

4d/4 = -1/4

Simplifying

d = - 1/4

7 0

3 years ago

Read 2 more answers

I need help on this question plz

densk [106]

(12,-6) (4,-2)

4/12= 1/3
-2/-6= 1/3

the scale factor is 1/3

6 0

2 years ago

There are 5 pink marbles and 4 orange marbles in a bag. Madison will randomly pick two marbles out of the bag without replacing

Vesnalui [34]

Your answer would be A

7 0

3 years ago

Read 2 more answers

Write the explicit formula for the geometric sequence.<br><br> a1 = -5 a2 = 20 a3 = -80

Anni [7]

$a_1 = -5;\ a_2 = 20;\ a_3 = -80 \\\\a_2:a_1=r\ and\ a_3:a_2=r\\\\r=20:(-5)=-4\ check\ r=-80:20=-4\\\\a_n=a_1r^{n-1}\to a_n=-5\cdot(-4)^{n-1}=-5\cdot(-4)^{-1}\cdot(-4)^n\\\\=-5\cdot\left(-\dfrac{1}{4}\right)\cdot(-4)^n=\dfrac{5}{4}\cdot(-4)^n\\\\Answer:\boxed{a_n=-5\cdot(-4)^{n-1}\ other\ a_n=\frac{5}{4}\cdot(-4)^n}$

6 0

3 years ago