20 - 13.76 = 6.24
The change after spending $13.76 would be $6.24.
Step-by-step explanation:
The distance formula between two points:
Substitute the coordinates of the points.
If a ≤ b < c are the sides of the right triangle, then
a² + b² = c²
used 
for a ≥ 0.
therefore ΔABC is a right triangle.
AC = x, CD = 2x cause of 30° angle. Use pythagoras then
Answer:
WOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOW IDK
Step-by-step explanation:
LOL :)
You want to begin by changing your units to the same thing. The problem uses minutes and hours, and according to time 1 hour is 60 minutes.
Since we have 2 hours we want to multiply 60 by 2 to get 120. According to the problem, the biker to an extra 30 minutes and adding that to the time we already calculated we get 150.
We can say, the biker took 150 minutes to go through 45 miles. To find out how many miles he took per minute, we divide them (45/150) to get that he or she went through 0.3 miles per minute.
Again, we know 1 hour is 60 minutes, so to get how many miles per hour we want to multiply .3 by 60. This gets us 18.
Therefore, the biker travels 18 miles per hour
