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
GenaCL600 [577]
4 years ago
12

What is the sum of the arithmetic sequence 3,9,15, if there are 36 terms ...?

Mathematics
1 answer:
mezya [45]4 years ago
6 0

n = 36

a = 3

d = 3

(n/2) (2a + (n - 1)d)

(36/2) (2(3) + (36 - 1)3)

18(6+35(3))

18 x 111 = 1998

The sum is 1998


You might be interested in
The number of birds (b) in a park increases when the number of dogs in the park (d) decreases. Write the correct equation for th
Furkat [3]

Complete question :

The number of birds (b) in a park increases when the number of dogs in the park (d) decreases. Write the correct equation for this scenario, and solve for the number of birds when there are 10 dogs.

Dogs(d) - - birds(b)

40 - - - - - - 10

50 - - - - - - 8

Answer:

b = k/d ; 40

Step-by-step explanation:

From the table:

Dogs(d) - - birds(b)

40 - - - - - - 10

50 - - - - - - 8

The number of birds(b) in a park increases when the number of dogs (d) decreases.

Hence we can infer that an inverse relationship exists between them.

Number of birds(b) ∝ 1 / number of birds

b ∝ 1 / d

b = k/d

k = (b × d)

Where k is the proportionality constant

When d = 40, b = 10

Solve for k

k = (40 * 10)

k = 400

Therefore, number of birds(b), when there are 10 dogs;

b = k/d

k = 400, d = 10

b = 400 / 10

b = 40

40 birds when dogs = 10

8 0
4 years ago
In the diagram below, O is circumscribed about quadrilateral ABCD. what is the value of x?​
cestrela7 [59]

Answer:

104

Step-by-step explanation:

cuz it iz

7 0
3 years ago
Read 2 more answers
Which of these numbers is the smallest A .0134, B .802, C .47, D.0562, E .137
Georgia [21]
I think your answer would be D.0562
3 0
4 years ago
Read 2 more answers
A parallelogram piece of paper 40cm by 25cm is cut into small parallelogram 8cm by5cm . How many pieces can be obtained. Step by
Bumek [7]
Step 1- multiply 40 by 25 to get 1000
step2- multiply 8 by 5 to get 40
step3- divide 1000 by 4 to get 250
answer. 250 pieces
5 0
3 years ago
The actual length of Wall C is 4 m. To represent Wall C, Noah draws a segment 16 cm long. What scale is he using? Explain or sho
Alina [70]

Answer:

Step-by-step explanation:

I ha d the same question! what I’ve been seeing is 1 m = 4 cm if it makes sense ..

4 0
3 years ago
Other questions:
  • Direct stock plans are only offered by brokerage firms? <br> True or False
    12·2 answers
  • What is the multiple zero and multiplicity of f(x) = (x − 3)(x − 3)(x + 5)? a. Multiple zero is 5; multiplicity is 1 b. Multiple
    9·2 answers
  • Can you find the missing segment to the triangle in the image
    8·1 answer
  • Any fake answers will get reported but if u do good u get brainliest:) ----------------------------------- Fred's coffee shop se
    8·2 answers
  • Please help! Choose all that apply.
    7·1 answer
  • '
    14·1 answer
  • A store receives 2,000 decks of popular trading cards. The number of decks of cards is a function, d, of the
    7·1 answer
  • Pls help <br> What is the value of t? <br> A. 150<br> B. 60<br> C. cannot be determined<br> D. 30
    14·1 answer
  • Answer A,B,C. Combine the following to write an equivalent expression:
    7·2 answers
  • A tire manufacturer knows that 5% of tires contain a defect, and the presence of a defect is independent from tire to tire.
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!