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Q: Find the product of (10 + y) (10 - y)?

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What is the product of y and 10

x = 10, y = 25

1/x + 1/y y/xy + x/xy (y+x)/xy= 10/20 10/20=1/2 1/2 is the answer.

Suppose the numbers are x and y Then the sum of their reciprocals is 1/x + 1/y = y/xy + x/xy = (y+x)/xy = 10/20 = 1/2

8

Put 0 in for x and solve for y to find the y intercept. Put 0 in for y and solve for x to find the x intercept. -4(0)+3y=10 y=10/3 y intercept is (0,10/3) -4x+3(0)=10 x=-10/4 x intercept is (-10/4,0)

It is: 57*10 = 570.

69

y = 7x-10

2x+y = 10 or y = -2x + 10 so the slope is -2

2y+5y=10 7y=10 y=10/7

17

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