Answer:
lower limit is n=1
upper limit is n=18
n=1 to 18∑(7n-4)
Number of beads = 1125
Step-by-step explanation:
Given series is 3+10+17+24.....
we find the formula to find nth term(explicit formula)
first term (a1) = 3
common difference (d)= 7




total of 18 rows
So we find sum for n =1 to 18
lower limit is n=1
upper limit is n=18
n=1 to 18∑(7n-4)
(b) to find total number of beads we apply sum formula

n=18, a=3, d= 7

S= 9(125)=1125
Number of beads = 1125
Answer:
65 dollars and 2 cent
Step-by-step explanation:
Answer:
7.5
Step-by-step explanation:
It is greater because it is closer to 8.
Answer:
-2
Step-by-step explanation:
maybe?
Answer:
7
Step-by-step explanation:
the reciprocal of 
To find reciprocal, flip the top and the bottom.
So
would be
.
Multiply like normal.