Answer:
1370
Step-by-step explanation:
<h3>Given</h3>
- AP with d= 7 and a₂₂ = 149
<h3>To find</h3>
<h3>Solution</h3>
<u>First, let's get the value of the first term:</u>
- aₙ = a + (n-1)d
- a₂₂ = a + 21d
- 149 = a + 21*7
- a = 149 - 147
- a= 2
<u>Next, let's find the sum of the first 20 terms</u>
- Sₙ = 1/2n(2a+ (n-1)d)
- S₂₀ = 1/2*20(2*2 + 19*7) = 10(4 + 133) = 10*137 = 1370
<u>Answer is</u> 1370
If 36 of 80 marbles are blue, then the percent of marbles that are blue is 44% i think
Answer:
rule is when x increases by 1, y decreases by 3000
Step-by-step explanation:
Answer:
(a+b)²=a²+2ab+b²
Step-by-step explanation:
Hope this helps!!!
B because the sum of 2 sides must be GREATER than the 3rd side
