Question

Form a sequence that has two arithmetic means between -1 and 59.

a. -1, 29, 29, 59
b. -1, 19, 39, 59
c. 19, -1, 59, 39
d. -1, 14, 29, 44, 59

Please select the best answer from the choices provided


a) A
b) B
c) C
d) D

Answer 1

b.

-1, 19, 39, 59

Explanation:

Answer 2

Correct choice is B

Explanation:

For the numbers -1 and 59, find the difference 59-(-1):

since 59-(-1)=60 and
`(60)/(3)=20` (two arithmetic means tells you there will be three intervals), two arithmetic means will be

• -1+20=19;
• 19+20=39.

The only correct sequence is -1, 19, 39, 59.