Answer:
Answer is 1
Step-by-step explanation:
A can do 1 job in 10 min. means 1/10 job per min.
B can do 1/15 job per min.
together A&B can do 1/10+1/15 =1/6 job per min.
1/6 job they spend 1 min
1 spend 1x1/(1/6) = 6 min
The answer is the second one. 20.075
Answer:
–9xy2 – 6x2y + 5x3
–9xy2 – 6x2y – 5x3
9xy2 + 6x2y + 5x3
9xy2 – 6x2y + 5x3
the answer is 9xy2 – 6x2y + 5x3
Step-by-step explanation:
Part A: D
21,60 x 107% =23,11
Part B: D
23,11 x 115% =26,58
