5x-13=15+7x
-13=15+2x
-28=2x
-14=x
Answer:
74 mph
Step-by-step explanation:
The driver started driving at s mph.
After 3 hours, the speed became s + 10 mph.
The total time is 11 hours, so 3 hours were driven at s mph and 8 hours were driven at s + 10 mph.
speed = distance/time
distance = speed * time
distance = (distance driven at speed s) + (distance driven at speed s + 10)
894 = s * 3 + (s + 10) * 8
3s + 8s + 80 = 894
11s + 80 = 894
11s = 814
s = 74
Answer: 74 mph
Answer:
Step-by-step explanation:
Therefore, this angle lies in quadrant III since it is between π and 3π/2
It's reference angle is:
and so lies in quadrant I
For sine, quadrant I and II are positive and quadrant III and IV are negative.
Therefore, as then
Finally,
Answer:
y = -3/1x + 4 ...............
Answer:
Step-by-step explanation:
b,e