The table below shows the high temperature last Thursday for five cities, A through E. If the median of the Thursday high temperatures
for these cities was 81°F, which of the following could NOT have
been the high temperature last Thursday for City A?
City High Temperature
AI
B 87°F
C 81°F
D 62°F
E 93°F
O a. 85°F
O b. 75°F
O c. 65°F
O d. 55°F
#3/15

51

step-by-step explanation:

73-22=51 the   mass number minus the amount of protons gives you the amount of neutrons

75%

step-by-step explanation:

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