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seraphim [82]
3 years ago
12

One number is eight less than three times another number. If the sum of the numbers is 20, find the numbers.

Mathematics
1 answer:
mamaluj [8]3 years ago
4 0

Answer:

7 & 13

Step-by-step explanation:

Let the first number be x

2nd number = 8 less than 3 times the other

2nd number = 3x - 8

Their sum = 20

X + 3x - 8 = 20

4x -8 = 20

Collect like terms

4x = 20+8

4x = 28

Divide both sides by 4

4x/4 = 28/4

X = 7

First number = 7

2nd number = 3x - 8

= 3(7) - 8

= 21 -8

= 13.

Therefore the numbers are 7 and 13

Pls mark as brainliest

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Answer:

B. (x - 8)(x - 5)

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A rectangular box has dimensions 0.045m, 0.034m, 0.01m. Calculate the volume of the box in cm³:
sergiy2304 [10]

Answer:

15.75 {cm}^{3}

Step-by-step explanation:

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Answer:

C) 4/(x+y)²

Step-by-step explanation:

start by expanding so it is written as 2÷(x+y)/(x+y)÷2.

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3 years ago
Adrian exercised three days during the past week. He exercised 58 minutes and 45 seconds during the
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Answer:

2h 1' 1"

Step-by-step explanation:

1h = 1 hora

1' = 1 minute

1" = 1 secind

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