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
Nonamiya [84]
2 years ago
15

Find the sum of the first six terms of a geometric series in which a1 = 4 and r = -3: A. 729 B. -729 C. -728 D. 728 plz help

Mathematics
1 answer:
natta225 [31]2 years ago
6 0

Answer:

C

Step-by-step explanation:

The sum to n terms of a geometric sequence is

S_{n} = \frac{a_{1}(r^n-1) }{r-1}

Here a₁ = 4 and r = - 3, thus

S_{6} = \frac{4((-3)^6-1)}{-3-1}

    = \frac{4(729-1)}{-4} = - (729 - 1) = - 728 → C

You might be interested in
a triangle has verticals A(-5,-4), B(2,6), C(4,-3) The center of dilation is the origin and (x,y) (3x,3y). what are the vertices
Gnom [1K]

A' (3(-5),3(-4))= (-15,-12)

B' (3(2),3(6))=(6,18)

C'(3(4),3(-3))=(12,-9)

6 0
1 year ago
WHAT IS 9+8+9-2+5x5+5-25+5-4+2+-2+4-+2-5+4-2+5-4+2-5+4-1+5-4+-2+4-2+5-4+2-4<br> +-+
a_sh-v [17]

Answer:

34

Step-by-step explanation:

cause you had to doit the simple math problem

are you trying to prank on this problem

8 0
3 years ago
Find the slope of the line that passes through the points (0,7) and (-4,7) ​
aev [14]
Slope: (y2-y1)/(x2-x1)
(0,7) and (-4,7)
(7-7)/(-4-0) = 0/ -4
The slope is 0
8 0
2 years ago
Read 2 more answers
Chris paid $3,069 for 3 iphones. Each iphone costs the same amount. How much did each iphone cost? Solve this problem using a st
galben [10]

Answer 1029

Step-by-step explanation: So, since all of the phones cost 3,069 in total, divide 3,069 by three. You get 1029.

7 0
2 years ago
Select all the ordered pairs that satisfy the function y = 3x -4.
aksik [14]

Answer:

B and D

Step-by-step explanation:

plug in the x and y for the x and y in the equation

if the two sides come out equal to eachother they satify the function

if they dont well they dont satisfy the function

hope this helps <3

4 0
2 years ago
Other questions:
  • Write the equation to represent a line that contains the point (-2, 7) and a slope of -3.
    9·2 answers
  • Solve the equation. Round the answer to the nearest tenth.
    6·2 answers
  • orange jelly beans is 82 and that exam scores have an approximately symmetric distribution. She gives orange jelly beans to 25 r
    5·1 answer
  • Marcie bought a 59-foot roll of packing tape. She used two 8 5/6 foot lengths.How much tape is left on the roll?
    8·1 answer
  • If 6 is added to a number the resultus 8 less than 3 times the number find the number
    6·1 answer
  • 2. Scale: 4 inches = 12 miles. If the drawing length is 13 inches, what is the actual<br> length
    11·1 answer
  • HELP ASAPPPPPPPPPP THESE NEED TO BE DONEEEEE!!!!!!
    8·2 answers
  • Y = -1/2x - 4<br><br> Identify the y intercept<br> Find the slope:<br><br> 3x = 13 - y
    7·1 answer
  • Help plz !! I will give you points or anything !!
    14·1 answer
  • The height of the rectangle and the triangle are the same. The base of the triangle is half the base of the rectangle.
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!