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
torisob [31]
3 years ago
15

What is the sum of a geometric sequence 1,3,9,... if there are 14 terms

Mathematics
1 answer:
Maksim231197 [3]3 years ago
7 0
1, 3, 9, 27, 81, 243, 729, 2187, 6561, 19683, 59049, 177147, 531441, 1594323.
If this is the proper sequence pattern, we add up all the numbers to get a sum.
The total sum is 2391457.
You might be interested in
If f(x) = x ^ 2 + 3 , then f(x+y)=?
kobusy [5.1K]

Answer:

f(x)=x^2+3

f(x+y)=(x+y)^2+3

this is done by replacing x with (x+y)

f(x+y)=x^2+2xy+y^2+3

therefore : f(x+y)= x^2+y^2+2xy+3

5 0
2 years ago
12 is 75% of what number?
wolverine [178]
For this question you should say:
75/100 = 12/? 
so the ? is your answer:
12*100/75 = 16 :)))
I hope this is helpful
have a nice day
8 0
3 years ago
Save Work out the size of angle AED.<br> b) Work out x
Mamont248 [21]

Answer:

x = 10°

Step-by-step explanation:

a). Since, opposite angles of a cyclic quadrilateral are supplementary angles"

   Therefore, in cyclic quadrilateral ABDE,

   m∠ABD + m∠AED = 180°

   110° + m∠AED = 180°

   m∠AED = 180° - 110°

                 = 70°

b). AD = ED [Given]

   m∠EAD = m∠AED [Since, opposite angles of equal sides are equal in measure]

   m∠EAD = m∠AED = 70°

   By triangle sum theorem in ΔABD,

   m∠BAD + m∠ABD + m∠ADB = 180°

   m∠BAD + 110° + 40° = 180°

   m∠BAD = 180 - 150

                 = 30°

    m∠AEB = m∠AED + m∠DAB [By angles addition postulate]

    m∠AEB = 70° + 30°          

                  = 100°

    By triangle sum theorem in the large triangle,

    x° + m∠AEB + m∠EAB = 180°

    x° + 100° + 70° = 180°

    x = 180 - 170

    x = 10°

8 0
2 years ago
An engineer on the ground is looking at the top of a building. The angle of elevation to the top of the building is 22°. The eng
Pavlova-9 [17]
Let the distance from the engineer to the base of the building be x, then
tan 22 = 450/x
x = 450/tan 22 = 1,113.79

Therefore the distance from the engineer to the base of the building to the nearest foot = 1,114 feet
5 0
3 years ago
Help me pls i dont have long i have 10 mins this is 1 of 2 questions can you pls answer both ill give brainly when 2 answers are
astraxan [27]
I’ll help you with your math I am very good at it
8 0
3 years ago
Read 2 more answers
Other questions:
  • Help please! ^--^<br> . .
    10·1 answer
  • The map shows the location of the airport and a warehouse in a city. Though not displayed on the map, there is also a factory 10
    6·2 answers
  • A. Maya is correct
    12·1 answer
  • Mr and mrs Wilson hosted their daughters wedding they paid 575
    10·1 answer
  • A lake covers a surface area of about 20,000 square miles.
    11·1 answer
  • Select the correct answer
    5·2 answers
  • Please can anyone simplyfy that and can you tell the steps?​
    5·1 answer
  • In the right triangle, a = 20, b = 21. Find c<br><br> A) 841<br> B) 22<br> C) 29
    10·1 answer
  • XPLEASE HURRY!
    11·2 answers
  • What is the surface area of a sphere with a radius of 15 cm?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!