3 years ago

Find the first, fourth, and eighth terms of the sequence a(n)= -3*2^n-1

2 answers:

8 0

Simple, plug in 1, 4, and 8 for n and solve.
-3× $2^{1-1}$ =-3
-3× $2^{4-1}$ =-24
-3× $2^{8-1}$ =-384

So answer choice C

Lynna [10]3 years ago

5 0

The correct answer is c.

You might be interested in

Solve for r. –5 ≥ 5 (r+5)

aleksandr82 [10.1K]

Answer:

-6 ≥ r

Step-by-step explanation:

–5 ≥ 5 (r+5)

Divide each side by 5

–5/5 ≥ 5/5 (r+5)

–1 ≥ (r+5)

Subtract 5 from each side

-1-5 ≥ r+5-5

-6 ≥ r

5 0

3 years ago

What is 73x28 regrouping method

finlep [7]

Let this guide you through

3 0

3 years ago

A fish-tank has a length of 27 centimeters, a width of 21 centimeters and a depth of 16 centimeters. Find the volume of the fish

NISA [10]

Answer:

To find the volume of the fish tank, we will need to multiply the height, the length, and the width of the fish tank. So, 21 x 27 x 16 = 9072 cm

8 0

3 years ago

Read 2 more answers

Twenty-two is what percent of 55 A) 22% B) 40% C) 50% D) 250%

Mashutka [201]

Answer:

twenty two percent of 55 would be the answer B.40 I think.

4 0

3 years ago

An arithmetic sequence is represented in the following table. Enter the missing term of the sequence.

bija089 [108]

$a_1=-9\\\\a_2=a_1-8\to a_2=-9-8=-17\\\\a_3=a_2-8\to a_3=-17-8=-25\\\\a_4=a_3-8\to a_4=-25-8=-33\\\\\text{The general term of an arithmetic sequence:}\\\\a_n=a_1+(n-1)d\\\\a_1-first\ term\\d-common\ difference\\\\\text{We have}\ a_1=-9\ \text{and}\ d=-8.\ \text{Substitute:}\\\\a_n=-9+(n-1)(-8)=-9-8n+8=-8n-1\\\\\text{Put n = 43 and calculate}\ a_{43}\\\\a_{43}=-8(43)-1=-344-1=-345\\\\Answer:\ \boxed{?=-345}$

4 0

3 years ago