Step-by-step explanation:
You said the other one would be the last haha just kidding I'm glad to help.
16.
First, get rid of that parenthesis.
Now multiply both sides by 2 so that you can isolate k
19.
This is a pretty easy one. If you didn't know, 121/11 is actually 11 :)
Simply multiply by 3 to isolate r :)
Answer:
D
Step-by-step explanation:
Answer:
112 km/h
125 km/hr
Step-by-step explanation:
Distance = time * speed
Distance = distance train 1 + distance train 2
474 = 2(s) + 2(s + 13)
Distribute
474 = 2s + 2s + 26
Combine like terms
474 = 4s + 26
Subtract 26 from both sides
448 = 4s
Divide both sides by 4
112 = s
s = 112 km/h
s + 13 = 125 km/hr
Answer:
111 & 82
Step-by-step explanation:
888/8=111
574/7=82
Answer:
3
7
last one doesn't even make sense