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Vanyuwa [196]
3 years ago
6

Cheyenne is playing a board game. Her score was −220 at the start of her turn, and at the end of her turn her score was −390. Wh

at was the change in Cheyenne's score from the start of her turn to the end of her turn?
Mathematics
1 answer:
lesantik [10]3 years ago
5 0
So -390 -- 220 = -170

That was the change between the beginning and end of the turn.
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A factory makes car batteries. The probability that a battery is defective is 1/4. If 400 batteries are tested, about how many a
notka56 [123]

Answer:

100 batteries would be defective

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Henry can write 5 1/4 of his novel in 3 hours. how many pages can he write in eight hours
PilotLPTM [1.2K]
Henry would be able to write 14 pages of a novel in 8 hours.
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Math Test Helpppppp!!!!!!!!
soldier1979 [14.2K]
Simple problem:

When simplifying 3(x-6) they subtracted 3 instead of multiplied by 3.
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2 years ago
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7 0
2 years ago
Write an equation of a line that goes through the point (-9, 3), and is perpendicular to the line 3x + y = 5
Vlad [161]
To find the slope of the line, first find the slope of 3x + y = 5, and then its opposite reciprocal.

3x + y = 5
y = -3x + 5
the slope of 3x + y = 5 is -3.

the slope is -3, so the opposite reciprocal slope is 1/3.

the equation of any line is y = ax + b
to find this line, y = 3, x = -9, and the slope is 1/3.

3 = -9a + b
3 = -9 (1/3) + b
3 = -3 +b
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substitute a and b into the equation
y = ax + b
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the equation of the line is y = 1/3x + 6.


3 0
2 years ago
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