Answer:
fakejjajanKsksns znzmsmmsskskkkkksksjzbzhz
Answer:
D
Step-by-step explanation:
complementary means it equals 90
Step-by-step explanation:
A number that is negative is less than 0, so



So this function is negative, when x is less than -2
Answer:

Step-by-step explanation:

We can try to simplify first.

Now we can combine the like terms:

hope this helped! :)
Answer:
20 mph
Step-by-step explanation:
Let speed of Train a = Va mph
Let speed of Train b = Vb mph
Va = Vb + 30
Let time taken for Train a = Ta
Let time taken for Train b = Tb
time taken = distance travelled/speed
Ta = 350/Va = 350/(Vb+30)
Tb = 140/Vb
But they both travel in the same amount of time.
So, Ta = Tb

Cross multiply

Divide both sides by 210
