Answer:
48
Step-by-step explanation:
Answer:
s = 71 mph, and s+9 = f = 80 mph
Step-by-step explanation:
The distances the two busses travel add up to 604 mi.
Letting f be the faster speed and s the slower. Then f = s + 9 (mph).
Then (s + 9)(mph)(4 hr) + (s)(mph)(4 hr) = 604 mi. Solve this for s:
4s + 36 + 4s = 604 mi, or 8s = 568. Finally, s = 71 mph, and s+9 = f = 80 mph.
It is this property which makes the plane "flat". Two distinct lines intersect in at most one point, two distinct planes intersect in at most one line. If two coplanar lines do not intersect, they are parallel. Two lines which re not coplanar cannot intersect and are called "skew" lines.
Sum of complement angles = 90
<L + <M = 90
3x - 15 + x = 90
4x - 15 = 90
4x = 105
x = 26.25
<L = 3(18.5) - 15
<L = 63.75
Answer
<L = 63.75°
Answer:
90 degrees
Step-by-step explanation:
its a 45-45-90 triangle