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:
9330
Step-by-step explanation:
6 boys
10 boys=93300
1 boy=93300/10=9330
Question
CDs are $15.25 each how much will it cost to buy 3
Answer:
<h2>
45.75 $</h2>
Step-by-step explanation:
1 CD = $ 15.25
multiply the unit price by 3
15.25 * 3 = 45.75 $
Answer:
f(
)=2x+1
Step-by-step explanation:
given f(x)=-4x+1................(1)
x= put in equ (1)
f(x)=-4x+1
f( ) =-4()+1
f()=2x+1 answer
Answer:
99 cents
Step-by-step explanation:
one quarter=25 cents
nine pennies= 9 cents
six dimes= 60 cents
one nickle= 5 cents
25+9+60+5=85+14=99
