Well I don't know !
Let's check out the choices:
A). 3a - 4b = 21, a=0, b=7
3(0) - 4(7) = 21
0 - 28 = 21 Nope. That's not true.
B). 3a - 4b = 21, a=-3, b=2
3(-3) - 4(-2) = 21
-9 + 8 = 21
-1 = 21 Nope. That's not right.
C). 3a - 4b = 21, a=-2, b=-3
3(-2) - 4(-3) = 21
-6 + 12 = 21
6 = 21 Nope. That's not it.
Only one choice left.
This one had better be it:
D). 3a - 4b = 21, a=7, b=0
3(7) - 4(0) = 21
21 - 0 = 21
21 = 21 Yay ! That's it !
It stays the same because 3 is under 5 so nothing changes
Just add 3/4 to 3 so the answers is 3 3/4 miles
She will fill 194 containers completely and then have almost a half of a container left over.
All you had to do was divide 4,862 by 25 and you get 194.48
Hope i helped!
Answer: Negative numbers equal subtraction. I dont know what you are asking
Step-by-step explanation: None
