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Q: If x equals 10 and y equals 10 then 9x plus 8y equals?

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9x + 8y = (9 x 6) + (8 x 3) = 54 + 24 = 78

Do a bit of rearrangement: 1: 10x + 2 = 8y; 2: 8y = 59 - 9x so 10x + 2 = 59 - 9x so 19x - 57 making x = 3 and y is therefore 4.

9x plus 8y

If you mean (9x-8y)(9x+8y) then it is 81x^2 minus 64y^2

x=2

2x2 + 10 = 9x 2x2 - 9x + 10 = 0 (x - 2)(2x - 5) = 0

3x + 6x +1 = 10 9x = 10 - 1 9x = 9 x = 1

4x + 55 = 9x + 10 55 = 5x + 10 45 = 5x x = 9

It is possible.

The slope is 0.

17

it equals 13X.

5x+4x-10 = 35 9x = 35+10 9x = 45 x = 5

7 pigs - 8 chickens + 9 pigs = 16 pigs - 8 chickens7 exes - 8 wyes + 9 exes = 16 exes - 8 wyes7x - 8y + 9x = 16x - 8y

2x2 + 10 - 9x = 0 or 2x2 - 9x + 10 = 0 So (x - 2)*(2x - 5) = 0

5x + 51 = 9x + 11 Becomes 40 = 4x So x = 10

7x-4=9x+10-14=2xx=-7

That would depend on the plus or minus values of 7x and 10y of which none have been given.

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so 14x = -42, making x = -3

X equals 9.

It is 9x

144

If: x+16 = 9x then x = 2

9.63x + 8.65y