Answer:
the rate of each train is 139 km/h and 159 km/h.
Step-by-step explanation:
let
v = the rate of the slower train
v + 20 = the rate of the faster train
d = 1490 km the distance that the two train will travel
t = 5 hr the time of the travel
since speed = distance/time => distance = speed*time
v*t + (v+20)t = d
5v + 5(v + 20) = 1490
5v+5(v+20)=1490
Step 1: Simplify both sides of the equation.
5v+5(v+20)=1490
5v+(5)(v)+(5)(20)=1490(Distribute)
5v+5v+100=1490
(5v+5v)+(100)=1490(Combine Like Terms)
10v+100=1490
10v+100=1490
Step 2: Subtract 100 from both sides.
10v+100−100=1490−100
10v=1390
Step 3: Divide both sides by 10.
10v/10 = 1390/10
v = 139km/h
Next
we add 139 to 20
139 + 20 = 159 km/h
the rate of each train is 139 km/h and 159 km/h.
Answer:
(2x-3)(x-4)
Step-by-step explanation:
Answer: 5/2 + 1/2 = 3/4
Step-by-step explanation: Math...and also the internet ;-;
Answer:
I think 1/2
Step-by-step explanation:
Since there are 4 coins overall and 2 nickels, then the probabilty is 2/4
2/4 simplified is 1/2
(I've never been too good at probability so sorry if it is wrong)
Why do you need the answer so bad? Are you trying to get a pet?
The answer is a = 132.93 cm2
