Answer:
3/2(x+y)
Step-by-step explanation:
The cost of 2 DVD is x+y
Divide by 2 to get the cost of one DVD
(x+y) /2
Multiply by 3 to get the cost of 3
3/2(x+y)
Answer:
475 mph
Step-by-step explanation:
Distance = rate × time
time = distance / rate
If x is the speed of the plane in still air:
2100 / (x + 25) = 1890 / (x − 25)
Cross multiply:
2100 (x − 25) = 1890 (x + 25)
Distribute and solve:
2100x − 52500 = 1890x + 47250
210x = 99750
x = 475
Make a ratio, then cross multiply.
4/30=x/48
30x=4x48
30x=192
x=6.4
Hi there! Here is the soloution to your question:
12g+8k= 8012 Grams
I Hope that helps!
Answer:
(±√3,±√+1)
Step-by-step explanation:
