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Leokris [45]
2 years ago
15

Three fifths of what number equals one

Mathematics
1 answer:
Feliz [49]2 years ago
6 0
21 because it is being multiplied
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Solve the system of equations 7x+10y=36 y=2x+9
Damm [24]

Answer:

x = -2

y = 5

Step-by-step explanation:

Given two equations

1. 7x + 10y = 36

2. y = 2x + 9

Substitute 2x + 9 for y in equation 1.

We have

7x + 10y = 36

7x + 10(2x + 9) = 36

Distribute 10 into (2x + 9)

We have

7x + 10 x 2x + 10 x 9 = 36

7x + 20x + 90 = 36

27x + 90 = 36

Subtract 90 from both sides to eliminate 90 on the left side

27x + 90 - 90 = 36 - 90

27x = -54

Divide both sides by 27 to isolate x

27x/27 = -54/27

x = -2

Now substitute -2 into either equation to get y

Using equation 2, we have

y = 2x + 9

= 2 x -2 + 9

= -4 + 9

= 5

x = -2

y = 5

Check

7(-2) + 10(5) = 36

5 0
3 years ago
Find the sum or difference. 8 1/6 + 7 3/8
Lilit [14]
15 13/24 or in decimal form 15.5416
4 0
3 years ago
Read 2 more answers
Look at photo <br><br><br><br><br><br> ————————————————————————
8_murik_8 [283]
Huh what about the photo you gotta b
6 0
2 years ago
5. Luis found a new text messaging plan which will charge him $2.00 for 80 messages. Using this
Pavel [41]
I think that Luis would have to pay $22.50
7 0
2 years ago
HELP!!!!! hurry pls ​
valentina_108 [34]

Answer:

100

Step-by-step explanation:

since its collinear it has to be 180 -80 which equals 100.

4 0
3 years ago
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