-5, -6
x equals 4
30 x 0
The numbers are: 30 and -30
12x - 5(2x - 6) = 30 12 x - 10x + 30 = 30 2x = 0, x = 0 y = -6
3
480
The given expressions are: 5x + 5y = 30 3x - 5y = -30 Combine both equations to get: 5x + 3x + 5y - 5y = -30 + 30 8x = 0 Then: 8x/8 = 0/8 x = 0 Substitute that value for either of the expressions to get: 5(0) + 5y = 30 5y = 30 y = 30/5 y = 6 Therefore, the coordinates are x = 0 and y = 6.
Does this mean w^2 + w -30 = 0 ? If so, w = 5 or -6
-5/6
x2 + x - 30 = (x + 6)(x - 5)
x2 + 13x = -30 ∴ x2 + 13x + 30 = 0 ∴ (x + 3)(x + 10) = 0 ∴ x ∈ {-3, -10}
We don't know what operation you want. 1 x 30 = 30 0 + 30 = 30 60 - 30 = 30 900/30 = 30