The answer is C. Multiplication
Answer:
Cluster sampling
Step-by-step explanation:
Choosing groups and sampling whole group.
Answer:
We conclude that exist 286 different ways.
Step-by-step explanation:
We know that a ballroom dance couple has learned 13 different routines and needs to pick 10 of them to prepare for an upcoming local competition.
So, we count that out of 13 different routines we choose 10.
We use the following formula:
We conclude that exist 286 different ways.
8x² + 64x = 0
8x(x + 8) = 0
8x = 0 or x + 8 = 0
x = 0 or x = -8
Answer: x = 0 or x = -8
Answer:
2.98×10^-6 hrs
Step-by-step explanation:
Speed = Distance/Time
Time = Distance/speed
Given
Distance = 17in
Speed= 90mph
Convert inches to miles
1in = 1.578 × 10-5 mile
17in = 17(1.578 × 10-5) mile
17in = 26.826×10^-5miles
Get the time
Time =26.826×10^-5/90
Time = 0.298×10^-5
Time = 2.98×10^-6 hrs