Answer:
a) Arithmetic
b) 22.5
c) 4.5
d) a_n = 4.5 + 4.5(n - 1)
e) a_15 = 67.5
Step-by-step explanation:
a) Subtract one term by the term right before it, and the difference will be the common difference.
9 - 4.5 = 4.5
13.5 - 9 = 4.5
18 - 13.5 = 4.5
Therefore, the common difference is 4.5.
b) Since the common difference is 4.5, add 4.5 to the 18 (which was the last value given). The result is 22.5.
c) We have already figured out that the common difference is 4.5.
d) The explicit formula would be a_n = a1 + d(n - 1). The first term is 4.5 and d is also 4.5, so the explicit formula is a_n = 4.5 + 4.5(n-1).
e) Plug 15 into our explicit formula for n. a_15 = 4.5 + 4.5(14). The result is 67.5.
Answer:
3.50
Step-by-step explanation:
1.50 x 2 = 3 And their is .50 left so half of 1 pound is .50 which is 3+50=3.50
If this helped please make me brainliest :)
0 - 18 = -18
-18 + 9 = -9 ft
Answer: She would have to work 7 hours to earn $260.
Step-by-step explanation: 40×7=280 280-20=260 Hope this helps.
Answer:
I am not sure but i will say C.
Step-by-step explanation:
