Yes, you made an algebraic error. By multiplying 18 x 4, you messed up on order of operations.
(x+9)(x+2)*4
becomes:
(x^2+11x+18)*4
= 4x^2 + 44x + 72
anyway, this is how I would do this problem:
(x+9)(x+2)(4) = 912
(x+9)(x+2) = 228
x^2 + 11x + 18 = 228
x^2 + 11x - 220 = 0
(x+21)(x-10) = 0
x = -21 or 10
The dimensions can't be negative, so we only use x = 10
The dimensions are then 10+9, 10+2, 4
or 19, 12, 4
150 degrees because supplementary angles add up to 180 degrees
Answer:
8
Step-by-step explanation:
The greatest common factor of 24 and 56 is 8. As the name suggests, the Greatest Common Factor is the largest number
Answer:
x = 3
Step-by-step explanation:
4(x + 3) = 3(3x - 1)
4x + 12 = 9x - 3
4x - 9x = -12 - 3
-5x = -15
5x = 15
x = 3
