d = 3 , a₁₂ = 40 and S
= 7775
In an arithmetic sequence the nth term and sum to n terms are
<h3>• a
= a₁ + (n-1)d</h3><h3>• S
=
[2a + (n-1)d]</h3><h3>
where d is the common difference</h3><h3>a₆ = a₁ + 5d = 22 ⇒ 7 + 5d = 22 ⇒ 5d = 15 ⇔ d = 3</h3><h3>a₁₂ = 7 + 11d = 7 +( 11× 3) = 7 + 33 = 40</h3><h3>S₁₀₀ =
[(2×7) +(99×3)</h3><h3> = 25(14 + 297) = 25(311)= 7775</h3>
No, you do not capitalize "is" after "!" unless you are forming a new and complete sentence.
Do not capitilize:
"Hello!" is okay to say.
Capitilize:
"Hello!" Is she okay, she has never greeted us before...
The answer is 4x2-5x;Area= 114 in<span>2 i think</span>
Answer:
slope: -3
y-intercept: 5
Step-by-step explanation:
y=mx+b, where m=slope and b=y-intercept
Answer: 6 Is the answer
Step-by-step explanation:
<h2>The reason I say its 6 is because 3x2 is 6. Or you can divide 3 from 2 which is 1.5</h2><h2 />
