Answer:
A x=4
B dont know
C x=-14
1. x=1
2. x= 
Step-by-step explanation:
(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.
No the length of a triangle 2 smaller sides has to be greater than the sum of the other longer side
if you have a picture of the options that would be great! but for now, i’m gonna attach a picture with an example of a transformation.
the first triangle shows what it’s starting at.
the first transformation is turn 90 degrees clockwise.
the second transformation is turned ANOTHER 90 degrees, which would make the total transformation 180 degrees