150mi/3hrs = 50mph
400/50 = 8 hours
Check:
8hours * 50mi = 400 miles traveled
The answer is 3.2 as a decimal. In mixed for it is 3 1/5 and in simplest form it is 16/15
Answer:
0.375
Step-by-step explanation:
0.6875-0.3125 = 0.375
SA = (12 x 5 x 2) + (20 x 5 x 2) + (12 x 20) + (0.5 x 12 x 9 x 2) + (20 x 11 x 2)
SA = 120 + 200 + 240 + 108 + 440
SA = 1,108 in²
<em>The answer you got was incorrect.</em>
Use FOIL (First, Outside, Inside, Last)
x(x) = x²
x(9) = 9x
-2(x) = -2x
-2(9) = -18
x² + 9x - 2x - 18
simplify by combining like terms
x² + 9x - 2x - 18
x² + 7x - 18
x² + 7x - 18 is your answer
hope this helps
