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aleksley [76]
3 years ago
6

Overnight the temperature dropped 1.3 degrees every hour how many hours did it take the temperature to drop 7.8 degrees

Mathematics
1 answer:
antiseptic1488 [7]3 years ago
7 0
6 and 1/2 hours in total. divide 7.8 by 1.3
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Please help :(<br> [math]
sergij07 [2.7K]

Hey!

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

First Equation:

2x + 3 = -7

2x + 3 - 3 = -7 - 3 (Subtract 7 to both sides)

2x = -10

2x/2 = -10/2 (Divide 2 to both sides)

x = -5

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

Second Equation:

4.5x - 7 = 20

4.5x + (-7) + 7 = 20 + 7 (Add 7 to both sides)

4.5x = 27

4.5x/4.5 = 27/4.5 (Divide 4.5 to both sides)

x = 6

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Third Equation:

-3x + 7 = 28

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-3x/-3 = 21/-3 (Divide -3 to both sides)

x = -7

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

Answers:

2x + 3 = -7 → x = -5

4.5x - 7 = 20 → x = 6

-3x + 7 = 28 → x = -7

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

Hope This Helped! Good Luck!

8 0
3 years ago
What's p-(8+m) over -1+p if m is 1 1/9 and p is 1 7/8 please help
djyliett [7]
(p-8-m)/(-1+p)=1 1/9;p=1 7/8
(p+1)/(p+8+m)=1 1/9;p=1 7/8
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A gardener is planting two types of trees:
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2x+9=6x+7. 2x+2=6x. 2=4x. X=1/2 a year
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