21x 3 times 7 would give you 21 and then add the x
Answer:
Exactly one solution
Step-by-step explanation:
4x -2y = 8
2x +y = 2
Multiply the second equation by 2
4x +2y = 4
Add the two equations together
4x -2y = 8
4x +2y = 4
-------------------
8x = 12
x = 12/8
We know there will be one solution
Answer:
2 miles per a hour
Step-by-step explanation:
m=miles
h=hours
1/2m=1/4h
if you times both sides by 4 you will get
2m=h
Answer:
19.228
Step-by-step explanation:
multiply 2.2*2.3*3.8 to get 19 yd^3
Without an equation, it's impossible to answer your question. I'm sorry.