Answer:
Simple random sampling
Step-by-step explanation:
Every element of the population does have an equal probability of getting chosen in a basic random sampling. The entire population should be included in your sample frame. To conduct this sort of sampling, technologies such as random numbers or other approaches relying completely on chance can be used.
Answer:
the cost will be Rs 350
Step-by-step explanation:
The Scateboard cost Rs 450 each in the local store,The shop keeper says if I buy 1 I can buy another for only 
of the normal price. We are asked to determine the cost of a second scateboard .
Hence the cost will be of the normal cost that is
the cost will be Rs 350
Answer:
y=7
Step-by-step explanation:
The two given angels are congruent so they must be equal in measure.
Set them up equal and find y.
8y = 5y + 21, subtract 5y from both sides
8y -5y = 21, combine like terms
3y = 21, divide both sides by 3
y = 7
