Answer:
10
Step-by-step explanation:
For x=2, this is ...
5·2 = 10
Multiply the number outside the parenthesis by each term inside the parenthesis:
2(v+5) = 2v + 10
R = laps she runs
s = laps she swims
each r (laps she runs) takes 5 min.
each s (laps she swims) takes 3 min.
She wants to run for 30 min.
So your inequality should = 30
Answer:54pounds
Step-by-step explanation:63-9=54
In the step after -6x+10=4x+20, he moved the terms incorrectly. you have to add 6x to both sides so it would be 10=4x+6x+20 which simplifies to 10=10x+20. subtract 20 from both sides to get -10=10x. divide both sides by 10. the answer is x=-1