Answer:
S₁₅ = 645
Step-by-step explanation:
The sum to n terms of an arithmetic sequence is
=
[ 2a₁ + (n - 1)d ]
where a₁ is the first term and d the common difference
Using the nth term formula
= 5n + 3 , then
a₁ = 5(1) + 3 = 5 + 3 = 8
a₂ = 5(2) + 3 = 10 + 3 = 13 , then
d = a₂ - a₁ = 13 - 8 = 5
Thus
S₁₅ =
[ (2 × 8) + (14 × 5) ]
= 7.5( 16 + 70)
= 7.5 × 86
= 645
The answer
A:6.09
Th explanation
Divide 24.36 by 4 and that’s what you get
Answer:
46%
Step-by-step explanation:
<u>Step 1: Make an expression</u>
<u />

<u>Step 2: Divide both sides by 39</u>
<u />

<u>Step 3: Find the percent</u>
<u />
-> Gives us the increased percent

46%
Answer: 46%
Square root of 69= 8.306624
check the answer
8.3^2= 8.3*8.3= 68.89
now round 68.89 = 69
I hope that's help!