1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Llana [10]
2 years ago
15

What is the sum of the seven terms of the geometric series 2- 8+32-...?

Mathematics
1 answer:
egoroff_w [7]2 years ago
6 0
The first term is 2 and the common ratio = -8/2 = -4

S7   = 2 * (-4)^7 - 1
                -------------    =      6554   answer
                  -4-1
You might be interested in
Find the distance between<br> 2-3i<br> And<br> 9+21i
Goryan [66]

2 - 3i is just another of writing (2, -3) in the cartesian plane, the 2-3i however is using the "imaginary axis" for the imaginary plane, is all however the imaginary axis is simply the equivalent of the y-axis.  Likewise 9+21i is just (9,21), so let's just use the distance formula.

\bf ~~~~~~~~~~~~\textit{distance between 2 points} \\\\ (\stackrel{x_1}{2}~,~\stackrel{y_1}{-3})\qquad (\stackrel{x_2}{9}~,~\stackrel{y_2}{21})\qquad \qquad d = \sqrt{( x_2- x_1)^2 + ( y_2- y_1)^2} \\\\\\ d=\sqrt{[9-2]^2+[21-(-3)]^2}\implies d=\sqrt{(9-2)^2+(21+3)^2} \\\\\\ d=\sqrt{7^2+24^2}\implies d=\sqrt{49+576}\implies d=\sqrt{625}\implies d=25

3 0
3 years ago
I need help solving this problem
Pepsi [2]
Skjdirbrowosicjvocosd
3 0
3 years ago
Vinny is interviewing for a job. he wants his take-home pay to be at least $42,000$42,000. what is the least salary he can earn
Elena-2011 [213]

56,000 would be the answer. If you divide the 42,000 by 3 then add your quotient to the original number you get his salary before tax.


7 0
3 years ago
Read 2 more answers
Help me with this :))))))
ollegr [7]

Answer:

CE = 21.2

Step-by-step explanation:

CE = CD + DE = 14 + 7.2 = 21.2

7 0
3 years ago
Find the smallest no......<br>only genius <br><br>1 .245, 45 ,67, 2​
Vlad [161]

Answer:

.245

Step-by-step explanation:

brainliest pls thanks bro

3 0
3 years ago
Read 2 more answers
Other questions:
  • 243.875 to nearest tenth, hundredth, ten, and hundred
    5·2 answers
  • Mrs. Little creates a boxplot for the test scores on her latest math test. She finds that the interquartile range is 20 points.
    14·2 answers
  • Write an equation in slope-intercept form of the line that passes through the point (3,-2) with slope -2.
    5·1 answer
  • Make k the subject of 7k=4k/3t-11t
    11·2 answers
  • 1) Which of the following is a measurement of length? *
    13·1 answer
  • Please help me with this 4.7 x 10^-1<br> as an ordinary number
    10·2 answers
  • The length of a rectangle is four times the width. If the area of the rectangle is 36
    6·1 answer
  • Parts being manufactured at a plant are supposed to weigh 65 grams. Suppose the distribution of weights has a Normal distributio
    15·1 answer
  • Write an equation in slope intercept form for the line passing through (2, 6) with a slope of -3
    6·1 answer
  • Five 1/4-2 5/7 needed by 3:30
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!