Let the speed of the first train be v mph. Then the speed of the second train is:
(v + 50) mph.
Distance traveled by the first train from 3pm to 7pm = 4v miles.
The second train travels 4v miles in 2 hours (from 5pm to 7pm). Therefore the speed of the second train = (4v)/2 = 2v.
However the speed of the second train is also given by (v + 50) mph.
v + 50 = 2v
v = 50.
The speed of the first train is 50 mph and the speed of the second train is 100 mph.
<span>a/b = 3/5 ----- a = (3b)/5
a + b = 136 --- (3b)/5 + b = 136
3b + 5b = 680
8b = 680
b = 85
a = (3b)/5 = (3 * 85)/5 = 51
a = 85 and b = 51</span>
Answer:
The angle is 35
Step-by-step explanation:
The angles are vertical angles, so they are equal
3x-4 = 2x+9
Subtract 2x from each side
3x-2x-4 = 2x+9-2x
x-4 = 9
Add 4 to each side
x-4+4 = 9+4
x=13
But it asked for the measure of the angle
2x+9
2(13)+9
26+9
35
Answer: <em>(gºh)(25)=2</em>
Step-by-step explanation:
1. This exercise is about Composition of functions, then you have:
2. Then, you have that
<em>(gºh)(25)</em>
3. Now, you must substitute 25 into the function, as you can see below:
<em>(gºh)(25)</em>
4. Simplify the fucntion.
5. Therfore, you obtain:
<em>(gºh)(25)</em>
Answer:
10.96
Step-by-step explanation:
68.50/45=1.37
1.37*8=10.96
