So 8x+4+4x+8=15x-9
Combine like terms.
12x+12=15x-9
Add 9 to both sides.
12x+21=15x
Subtract 12 from both sides.
21=3x
Divide both sides by 3.
x=7
Now plug in 7 for x in 8x+4.
8(7)+4
56+4
=60
Try this option:
note, that distance between the parallel sides is shown via formula of area.
If it is possible, check the arithmetic.
Answer:
8 billion > 8,000,000,000
977 thousand > 977,000
13> 13
8,000,977,013
Step-by-step explanation:
The coordinates would be multiplied by 3, as the scale factor is 3, and it is a dilation, so we know the size increases.