All categories

3 years ago

3. The first four terms of a sequence are:

Mathematics

2 answers:

iren2701 [21]3 years ago

3 0

Step-by-step explanation:

tn=n(n+1)(2n+1)

t23=23(23+1)(2*23+1)

t23=36754

tatiyna3 years ago

3 0

Answer:

The 23rd term is 2806.

Step-by-step explanation:

The other answerer has used the formula but i'm answering from the assumption that T1 to T4 are correct.

Each term is the sum of n terms of an arithmetic series with first term a1 = 12 and common difference d = 10.

Sum of n terms = (n/2)[2a1 + d(n - 1)]

So the sum of 23 terms =

= 23/2 (2*12 + 10 * 22)

= 11.5 * 244

= 2806.

You might be interested in

100 + 5power of 2 x 4

Ratling [72]

Answer: 200

Step-by-step explanation: order of operations and your mom told me

4 0

2 years ago

Mr. Hynes buys a large variety bag of Hershey chocolates to give out for Valentine’s Day. The bag of chocolates costs $8.00 and

Tema [17]

I think the answer is 8$ but i an not sure

7 0

3 years ago

A recipe uses 5 cups of sugar for every 2 cups of sugar how much flour is used with 7 cups of sugar

zhenek [66]

Answer:

35 cups of flour is used with 7 cups of sugar

Step-by-step explanation:

5 0

3 years ago

The perimeter of a triangle is 105. the lengths of all three sides are represented by three consecutive odd integers. Find the l

aev [14]

The longest side of the triangle is 37.

8 0

3 years ago

Use the coordinates of the plotted points to complete the calculation below. Pay attention to negative signs.

MArishka [77]

Answer:

3
1
-3
1
-3

Step-by-step explanation:

The <em>change in y</em> is the difference in y-coordinates between the lower right point and the upper left point. Similarly, the <em>change in x</em> is the difference in the x-coordinates of those points.

$\text{Slope}=\dfrac{\text{change in y}}{\text{change in x}}=\dfrac{\boxed{3}-6}{2-\boxed{1}}\\\\=\dfrac{\boxed{-3}}{\boxed{1}}\\\\\\=\boxed{-3}$

7 0

3 years ago

Read 2 more answers