117k views
2 votes
Please answer at least one. The "^" means the power like Example:2 to the power of 6

1)0.5^3+0.3^3

2)I thought of a number. My number multiplied by 7 is 6 bigger than 50. Find my number.

3)It takes three identical water pumps 8 hours to fill a pool. How long would it take four of the same pumps to fill the pool?

1 Answer

0 votes
1) 0.5^3+0.3^3=
0.5^3=0.125
0.3^3=0.027
0.125+0.027=0.152

2)Let X be the number:
X*7=6*50
7X=300
X=42.857

3) If it takes 3 identical pumps to fill a pool, one pump will take 8*3=24 hours to fill the pool. If you have 4 pumps, it will quadrupal the speed, making it take 24/4=6 hours.

Hope I helped!
User Xareyo
by
8.3k points

No related questions found

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories