Answer:
C) 5x - 18 = 7
Step-by-step explanation:
Plug in 5 for x.
5x - 18 = 7
5(5) - 18 = 7
Simplify. First, multiply, then subtract.
25 - 18 = 7
7 = 7 (True)
~
21.5.......:::..............:.::.::..
Answer: b=20
Step-by-step explanation:
Subsitute a for 20.
b=20/4-3
b=20/1
b=20
Well first you take 78 and turn it to 7.8
then multiply by 10000
therefore 7.8*10000= ?
That would be a right-angled triangle.
