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
AlekseyPX
3 years ago
6

The first term of a geometric series is 3, and the sum of the first term and the second term is 15. What is the sum of the first

six terms?
a) 1,023

b) 3,906

c) 4,095

d) 11,718
Mathematics
1 answer:
Ivan3 years ago
5 0
Sum of n terms in a geometric progression is given by Sn = a1 (1 - r^n) / (1 -r)

3( 1 - 4^6) / (1-4)

= 4,095
You might be interested in
The area of a door is 3024 square inches. If
olasank [31]

Answer:

Lets take all factors into consideration first

The door is a rectangle and the area of a rectangle is length times width

Let the width be w

Let the length be l

Equation length × breadth = area

(w+48)w = 3024

w^2 + 48w = 3024

w^2 + 48w - 3024 = 0

w^2 + 84w - 36w - 3024 = 0

w(w + 84) -36 ( w + 84) = 0

(w + 84) (w - 36) = 0

w + 84 = 0 AND w - 36 =0

w = -84 and w = 36

Since width cannot be negative, the right answer is 36

How did I get 84 and 36? Well, I had to factorize 3024 and since 84 times 36 is 3024 and 84 minus 36 is 48, I chose them.

7 0
3 years ago
PLS HELP QUICKKK its almost due
laiz [17]

I think its the second one.  I hope it is

7 0
3 years ago
Compare the polygons shown in Exercises 2 and 8. Describe how they are alike and how they are different.
Fed [463]
Im hoxrny help i need
5 0
3 years ago
Please help me please please please help
devlian [24]
I wouldn’t really know, sorry... just commenting for more answers
6 0
2 years ago
What are the four consecutive numbers whose sum is 50?
nika2105 [10]
X+x+1+x+2+x+3=50
4x+6=50/-6
4x=50-6=44
x=44:4=11
⇒The 1st number is 11, the 2nd is 12, the 3rd is 13 and the 4th is 14.
_______________________________________________________
11+12+13+14=50

If you don't understand something,please ask me.

4 0
4 years ago
Other questions:
  • What are the x- and y- intercepts for the graph of 3x+y=15
    11·1 answer
  • PLEASE HELP ASAP <br><br> A 3<br> B 12<br> C 0<br> D 9
    12·2 answers
  • What is the area of this tile?
    8·1 answer
  • What is the quotient (3x4 – 4x2 + 8x – 1) ÷ (x – 2)?
    7·1 answer
  • 2 fifthsin to decimal and percents​
    5·1 answer
  • The M &amp; P Pencil company that makes mechanical pencils expects to have two defective pencils for every 15 made. What is the
    7·1 answer
  • 50 POINTS!!!From 1970 to 1990, the average cost of a new car C (in dollars) car aproximated by the model C= 30.5p^2 + 4192 where
    6·1 answer
  • To continue our talks of unit conversions I found this 160 square meter townhouse in Italy that is being sold for 157,000 Euros.
    7·1 answer
  • Bye people, leaving this app forever,it was nice meeting yall
    12·2 answers
  • amin mixed 450 g of pes and 355 g of nuts he packed the mixed nut equally into packets that each contained 35 g of nut. how many
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!