It'd be easier to do #18 if y ou were to break it up:
14* (first term + 14th term)
Sum from n=1 to 14 of n = S = ---------------------------------
14 2
14(1+14)
= ---------------- = 7(15) = 105
2
The sum of twice that is 210. The sum of "1 from n=1 to n=14" is just 14.
The final sum is 210 + 14 = 224 (answer)
Subtracting -9 from any number is the same as
<u></u>
<u>A</u>
<u>subtracting 9 from that number.</u>
Answer:
8 × 4.52 = 36.16
Step-by-step explanation:
We have given expression:
8 × 4.52
We have to find the product of expression.
8 × 4.52
8 × 4.52 = 36.16
36.16 is the product of the given expression.
We completed our question.
Test results indicate that a woman is not pregnant when she is
Answer:56.57
Step-by-step explanation:
πr2
2
=
22
7
⋅(6)2
2
=56.57
