Answer:
Multiplying by 7 should solve
Step-by-step explanation:
To isolate x and solve the equation you multiply both sides by 7. x/7 cancels out to just x and 5 becomes 35
Each team needs two people for a 3-legged race.
Therefore, the number of orders (combinations) of 2 people at a time from 8 is
₈C₂ = 8!/(2!6!)
= (8*7*6!)/(2*6!)
= (8*7)/2
= 56/2
= 28
Answer: 28
B. 10/15
Because:
10/15 divided by 5/5 = 2/3
Answer: 3 equations because she has to find 3 variables