3 years ago

X + 5y - 10 = 0 x = 2y - 8

1 answer:

3 0

So since we know what x is, we can substitute it into the original equation for x like so to solve for y...

(2y - 8) + 5y - 10 = 0
2y - 8 + 5y = 10
2y + 5y = 18
7y = 18
y = 18/7 (or about 2.57)

So now we know what x is, we can sub it into the below equation to solve for x...

x = 2(18/7) - 8
x = 36/14 - 8 (or about -5.43)

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Whats a quadratic equation that has the roots of 6 and negative 9

Komok [63]

Answer:

x^2-3x-54

Step-by-step explanation:

(x+6)(x-9) Setup the roots

x^2-9x+6x-54 FOIL out the terms

x^2-3x-54 Add like terms together

5 0

3 years ago

Which is a factor of 54xy+45x+18y+15? a) x-5 b)6y+5 c)6y+1 d)3y+5 ...?