(02.01 LC)
An electronics store sends an email survey to all customers who bought tablets.
The previous month, 570 people bought tablets. Surveys were sent to 300 of
these people, chosen at random, and 138 people responded to the survey. Identify
the population and the sample. (4 points)
The population is 570. The sample is 138.
The population is 570. The sample is 300.
O The population is 300. The sample is 138.
The population is 138. The sample is 570.
O The population is 138. The sample is 300.

345

step-by-step explanation:

step-by-step explanation: the answer for wha if rt is 10 centimeters long, and wha is st? it’s 6

step-by-step explanation:

part a. the differences are decreasing, so we know the sequence is not arithmetic. the ratios are constant (=3/4), so we know the sequence is geometric.

part b. from part a, we know the common ratio is 3/4, so each term is 3/4 of the one before. the initial term is the number of gallons at h=1.

g[h] = (3/4)·g[h-1]

g[1] = 384 . . . . initial value required for a recursive definition

part c. the general formula for a geometric sequence is

a[n] = a[1]·r^(n-1)

we have a[1] = 384, r = 3/4, and the term number given by h. the formula that follows is

g[h] = 384·(3/4)^(h-1)

part d. filling in the value and doing the arithmetic, we have

g[12] = 384·(3/4)^11 ≈ 384·0.042235136 ≈ 16.2183 . . gallons

part e. each gallon is 4 quarts, so

16.2183 gal × 4 qt/gal = 64.8732 qt

step-by-step explanation:

a'(12.5,11.25)

slope=(y1-y2)/(x1-x2)