About 145 I gonna guess I dont know if that's right
Answer: Stratified sampling
Step-by-step explanation:
Stratified sampling is a random sampling method in which the population is divided into non-coinciding groups are called strata and a sample is picked out by some design within each stratum.
Given: A researcher wants to survey people from different age groups to analyze voting patterns.
Thus he will make different groups according to different ages to analyze voting patterns that are called stratum.
Thus, Stratified sampling best accomplish this goal.
Answer: 21
Step-by-step explanation:
Because u add 7 times 3 is 21
Its a guess and check problem you have to just try to find a combonation of 8 and 10 to get 200
Answer:
The number is 7
Step-by-step explanation:
Let x be the unknown number
difference is subtraction and is means equals
3 ( x-2) = 15
Divide each side by 3
3/3(x-2) = 15/3
x-2 = 5
Add 2 to each side
x-2+2 = 5+2
x = 7
