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SVEN [57.7K]
3 years ago
15

Find c , if c = a + b

Mathematics
1 answer:
Mandarinka [93]3 years ago
7 0
Uh what’s a and b ??
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Samuel takes 5 hours to make a table and a chair. He takes 9 hours to make 3 chairs
nikklg [1K]

Answer:

3 hours

Step-by-step explanation:

t = time to make a table

c = time to make a chair

t + c = 5

t+3c = 9

Subtract the second equation from the first

t+3c = 9

-(t + c = 5)

-----------------------

       2c = 4

Divide by 2

2c/2 = 4/2

c =2

2 hours for the chair

t+c = 5

t+2 = 5

t = 5-2

t = 3hours

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3 years ago
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konstantin123 [22]
It should be the answer eighty
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A toy box has a volume of 60 cubic feet. The box is 5 feet long and 4 feet wide. What is the height of the toy box?
sertanlavr [38]

The height is 3 feet long

you multiply 5 by 4 and get 20 and 20x3=60 therefore 3 is your answer

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3 years ago
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WITCHER [35]

Answer:

y = -2x -2

x + 2y = 2

2x + y = -2 } x1

x + 2y = 2 } x2

2x + y = -2 } we eliminate 2x

2x + 4y = 4 } same signs subtract and different add respectively

-3y = -6

-3 -3

y = 2 (x , 2) we reserve

2x + (2) = -2 we take on the first equation and replace 2 on a coordinate for y

2x = -2 - 2

2x = -4

2 2

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x y

4 0
3 years ago
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Explain how you could find 3/8% of $800
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3/8 cross multiply x/800 8x and 2400 divide both sides by 8 to get 300. 300 is the answer
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