15-2x
A number is a variable so use a letter like x for them
Answer: B
Step-by-step explanation:
Answer: D. Simple Random Sampling
Step-by-step explanation: When selection is made or based on chance which is equal or the same for all members within a population. In the scenario described above, there is no prior shuffling, arrangement or segregation of members within the population into groups or subgroups, rather the interviewed voters were chosen at random directly from within the larger population based on equal chance. Therefore voters already have their numbers, then using a random number generator, voters whose number corresponds were interviewed is a clear scenario of simple Random Sampling.
Answer:
A=49 B=41
Step-by-step explanation:
First, find the angle next to 88 by subtracting it from 180 to get 92.Then add that to 39 to get 131. Then subtract that from 180 to get the missing angle for A.Then add that angle to 90 to solve for the bigger triangle's missing angle, or B. Once you get that value, which is 139, subtract that from 180 to get the value for angle B.