3 years ago

Evaluate the geometric series below. Please show your work.

Mathematics

1 answer:

lesya692 [45]3 years ago

4 0

Answer:

-1310715

Step-by-step explanation:

By the formula of a geometric sequence, we work out:

$\sum_{k=1}^{18} -5 \cdot 2^{k-1}\\= -5 \cdot \sum_{k=0}^{17} 2^{k}\\= -5 \cdot \frac{2^{18}-1}{2-1}\\= -1310715$

You might be interested in

PLEASE HELP ME!!! ILL GIVE BRAINLIEST TO RIGHT ANSWER

11111nata11111 [884]

Answer:

792m^2

Step-by-step explanation:

Seperate your 2 rectangles

Large one is 18*30

Small one (60-18)*6

18*30 = 540m^2

42*6=252m^2

7 0

3 years ago

Each big square is cut into 3 parts to represent multiplying by one-third. The number of small shaded squares in the circled par

sammy [17]

Answer:the answer is 5/9

Step-by-step explanation:

8 0

4 years ago

1. What concepts of functions can you associate with the pictures?

Charra [1.4K]

Step-by-step explanation:

what concepts of functions can you associate with the picture

4 0

3 years ago

Colin invests £100 into his bank account.

kramer

The answer is $131.59

After year 1

104

Year 2

108.16

Year 3

112.49

Year 4

116.98

Year 5

121.67

Year 6

126.53

Year 7

$131.59

8 0

3 years ago

Read 2 more answers

Alina has 15x + 12 yards of ribbon. She uses 6x - 3 yards for a project. How many yards does she have left?

Andrews [41]

Answer:

-1.66666666667 yards

Step-by-step explanation:

15x+12=6x-3

subtract 6x on both sides

9x+12=-3

subtract 12 on both sides

9x=-15

x=-1.6666666666667

8 0

3 years ago