Answer:
x = ± 10
Step-by-step explanation:
to solve the equation let y = 0 , that is
100 - x² = 0 ( add x² to both sides )
100 = x² ( take square root of both sides )
±
= x , that is
x = ± 10
H + 121 + 31 = 180
H + 152 = 180
H = 180 - 152
H = 28
The answer is B. 5.3 miles per day * 17 days = 90.1 total miles.
Answer:
164
Step-by-step explanation:
2x+7+5x+12=180
7x+19=180
7x+180-19
7x=171
---- ----
7 7
x=164