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Yuki888 [10]
3 years ago
11

Solve the equation 5(a – 7) + 11 = 2a – 3(a + 4) for a

Mathematics
2 answers:
Lady bird [3.3K]3 years ago
6 0
The answer is a equals 6.
Monica [59]3 years ago
3 0

5(a – 7) + 11 = 2a – 3(a + 4)

5a - 35 + 11 = 2a - 3a - 12

5a - 24 = -a - 12

add a to both sides

5a - 24 + a = -a -12 + a

simplify

6a - 24 = -12

add 24 to both sides

6a - 24 + 24 = -12 + 24

simplify

6a = 12

divide both sides by 6

6a/6 = 12/6

simplify

a = 2

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What is the percent of change?
Simora [160]
Hi there!

In order to find the percent of change, we need to divide 3/8 by 7/8.

\frac{3}{8}  \div  \frac{7}{8}  =  \frac{3}{8}  \times \frac{8}{7}  =  \frac{3}{7}  = 43\%
Hope this helps!
5 0
3 years ago
Write the equation of a line that goes through the points (-2, -5) and (3, -10)
AlekseyPX
The equation for slope between two points is (y1-y2)/x1-x2
Plug the points into the equation

-5-(-10)/-2-3
5/5
m=1
To find the equation, use y-y1=m(x-x1)
y-(-5)=1(x-(-2))
y+5=x+2
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7 0
3 years ago
Jill and Erika made 4 gallons of lemonade for their lemonade stand. How many quarts did they make if then charge $2:00 per quart
notka56 [123]

Answer:

Number of quarts=16

Money earned=$32

Step-by-step explanation:

Given

  • 4 Gallons of lemonade is prepared
  • They charge $2 for a quart

1 Gallon= 4 Quarts

Therefore Number of quarts

= \text{number of gallons} \times 4\\= 4 \times 4\\=16

Therefore Number of quarts of lemonade prepared by them = 16 quarts

As they charge $2 for each quart

⇒

Total money made if they sell it all

=\text{number of quarts} \times 2\\= 16 \times 2\\=32

Therefore, if they are to sell all the lemonade that they prepared

They would earn=$32

5 0
3 years ago
HELPPPP I WILL MARK BRAINLIEST IF RIGHT
Oduvanchick [21]

Answer:

1) No

2)Yes

3)No

4)Yes

Step-by-step explanation:

405 divided by 99 equals 4.09 repeated

401 divided by 99 equals 4.05 repeated

81 divided by 33 equals 2.45 repeated

802 divided by 198 equals 4.05 repeated

3 0
3 years ago
Read 2 more answers
For every batch of cookies Carla's made , her brother ate 2 cookies. If Carla's brother ate a total of 6 cookies, how many batch
spayn [35]

Step-by-step explanation:

number of the total cookies ÷ the nber her brother ate

6÷2=3

3 0
3 years ago
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