Answer:
-4
Step-by-step explanation:
18x - 9(x - 1) = 5(3x + 3)
Step 1: Distribute
18x - 9x - 9 = 15x + 15
Step 2: Combine like terms
9x - 9 = 15x + 15
Step 3: Solve by using opposites terms, try to get x on one side and the solution on the opposite side
9x - 9 = 15x + 15
-9x -9x
-9 = 6x + 15
-15 -15
-24 = 6x
/6 /6
-4 = x
Answer:
6 inches
Step-by-step explanation:
The school is half the height of the tree. So if the tree is 12 inches tall the school should be 6 inches.
Answer:
D.
Step-by-step explanation:
in order to choose the correct answer, it is enough to substitute the given coordinates [(-3;-1) and (-6;8)] into the equations:
A. -1-8=3(-3+6); ⇔ -9≠9; wrong
B. -1+8=-3(-3+6); ⇔ 7≠-9; wrong
C. -1+8=3(-3-6); ⇔ 7≠-27; wrong
D. (-3;-1): -1-8=-3(-3+6); ⇔ -9=-9
(-6;8): 8-8=-3(-6+6); ⇔ 0=0 - correct.
Note, the suggested way is not the only one.
PS. the given points are (-3;-1) and (<u>-6;</u>8).
4+5 and 5+4 because they use the same numbers but just reversed
