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RSB [31]
2 years ago
10

When a number is decreased by 20% of itself, the result is 20. What is the number?

Mathematics
1 answer:
MrRa [10]2 years ago
4 0
Decreased by 20% means multiplied by 80%
80% of number=20
divide both sides by 4
20% of number=5
times 5 both sides
100% of number=25

the number is 25
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There were 65 people waiting in two lines to buy a snowball ice drink they were joined in the line by 11 more people a total of
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67 people were still left waiting in line.

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8 0
2 years ago
Line FG contains points F (3,7) and G (-4,-5) line HI contains points (-1,0) and I (4,6) lines FG and HI are. ?
ludmilkaskok [199]
FG : (3,7)(-4,-5)
slope = (-5 - 7) / (-4-3) = -12/-7 = 12/7

y = mx + b
slope(m) = 12/7
(3,7)...x = 3 and y = 7
now we sub, we r looking for b, the y int
7 = 12/7(3) + b
7 = 36/7 + b
7- 36/7 = b
49/7 - 36/7 = b
13/7 = b
so ur equation is : y = 12/7 + 13/7.....slope = 12/7, y int = 13/7

HI : (-1,0)(4,6)
slope = (6 - 0) / (4 - (-1) = 6/5

no need to go any farther.....these lines have different slopes...and their not negative reciprocals....so there will be one solution. Answer is : neither.
7 0
2 years ago
Read 2 more answers
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