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(v+4)t=66
t=66/(v+4)
...
(v-4)t=42, using t found above in this equation gives you:
66(v-4)/(v+4)=42 perform indicated multiplication on the left side
(66v-264)/(v+4)=42 multiply both sides by (v+4)
66v-264=42v+168 add 264 to both sides
66v=42v+432 subtract 42v from both sides
24v=432 divide both sides by 24
v=18
So his normal bicycling speed with no wind is 18 mph.
Answer:
the first one
4*10^12
Step-by-step explanation:
Answer:
(4, –1, 3)
What is the solution to the following system? (3, –1, 4) (4, 1, 3) (4, –1, 3) (3, 1, 4
Answer:
y=-48
Step-by-step explanation:
y/6-3=-11
y/6=-8
multiply 6/1 on each side
y=-48
