to average 60 mph for 2 laps his total speed needs to equal 60 x 2 = 120
his first lap was 40 so his 2nd lap needs to be 120-40 = 80 mph
Answer:
540
Step-by-step explanation:
sum of interior angles =(n-4)90
(10-4)90=
6×90=540
I got the answer (-1, 1) hope this helps
Answer:
Let x be the number of gallons of the 20% solution and let y be the number of gallons of the 5% solution.
Your system would be:
x+y=15
0.2x+0.05y=(0.13)(15)
Solve the system using either elimination or substitution method, or a combination of the two.
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