3 years ago

When figuring out the amount of mulch would be needed for Alex's back yard, he created an equation that

Mathematics

1 answer:

soldier1979 [14.2K]3 years ago

7 0

Answer:

Alex will need 14 bags

Step-by-step explanation:

B= 4(2x+7)+3(2x+7)

and

2x+7=2

First, we should solve the second equation to obtain x:

2x+7=2

2x=2-7

x= -5/2

Then, we use this answer to calculate B:

B=4(2(-5/2)+7)+3(2)

B=4(-5+7)+6

B=4(2)+6

B=8+6

B=14

Alex will need 14 bags

You might be interested in

Joe buys a set of books that cost $45.58. He gives the cashier three (3) $20 bills and three (3) pennies. How much change should

Dennis_Churaev [7]

45.58 - 60.03 = -14.45 His change should be 14.45.

4 0

3 years ago

Read 2 more answers

Use the elimination method to solve the system of equations. Choose the correct ordered pair.

kiruha [24]

5x+3y=58
5x-3y=22
(3y gets cancelled bc 3y-3y=0, then add 5x with 5x, so you're left with)
10x=80, (divide both sides by 10)
x=8
Now we look for y. So choose one formula from the two (let's say 5x + 3y=58)
Substitute x for 8 so it will look like---- 5(8)+3y=58
Multiply 5*8--- so you get -- 40+3y=58
Subtract 40 from both sides and you're left with 3y=18
divide both sides by 3
you get y=6
In conclusion, x=8 and y=6 hence, (8,6)

5 0

3 years ago

Read 2 more answers

X<br> Combine like terms:<br> 10k - 2k + 7s2 - 32

Free_Kalibri [48]

Answer:

$7s^{2}$ + 8k - 32