Answer:
46 mph and 61 mph
Step-by-step explanation:
Distance=speed*time
Let speed of one bus be x and another x+15
After 3 hours
First bus would have traveled 3x while second bus 3(x+15)=3x+45
Total distance= 3x+3x+45=6x+45
6x+45=321
6x=321-45=276
x=276/6=46 mph
x+15=46+15=61 mph
4.5(4-x) + 36 = 202 - 2.5(3x + 28)
Distributive property
18 - 4.5x + 36 = 202 - 7.5x - 70
Combine like terms
-4.5x + 54 = -7.5x + 132
Add 7.5x to both sides
3x = 78
Divide both sides by 3
x = 26
Answer:
Advantages of quantum mechanics include explaining phenomena found in nature as well as developing technologies that rely upon quantum effects, like lasers.
Step-by-step explanation:
Have a AWESOME day
-NaomiTheGenuis
Answer: I = 778. 33
Step-by-step explanation:
P= 14413.49
R= 0.0015
T= 36
The formula for calculating interest is given as :
I = PRT
substituting the given values , we have :
I = 14413.49 x 0.0015 x 36
I = 778.32846
I = 778. 33
Step-by-step explanation:
The answer: -1/2
2-3/4-2= -1/2