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VladimirAG [237]
3 years ago
8

The sum of two numbers is 57 The larger number is 15 more than the smaller number. What are the numbers?

Mathematics
1 answer:
mixas84 [53]3 years ago
5 0
X+y=57
y=x+15
x+x+15=57
2x=42
x=21
y=21+15
y=36
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Answer:

1) y = 5/2x - 3/2

2) y = 2/5x - 4/5

Step-by-step explanation:

1)

(1, 1) and (3, 6)

m = (y2 - y1)/(x2 - x1)

m= (6 - 1)/(3-1)

m= 5/2

m= 5/2

y - y1 = m(x - x1)

y - 1 = 5/2(x - 1)

y - 1 = 5/2x - 5/2

y = 5/2x - 3/2

2)

(2, 0) and (7, 2)

m = (y2 - y1)/(x2 - x1)

m= (2 - 0)/(7 - 2)

m = 2/5

y - y1 = m(x - x1)

y - 0 = 2/5(x - 2)

y = 2/5x - 4/5

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93/100 > 2/5.

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