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
andrezito [222]
2 years ago
10

What is the sum of the first 47 terms of the sequence? -215, -201, -187, -173, ...​

Mathematics
1 answer:
Andru [333]2 years ago
6 0

Answer:

5029

Step-by-step explanation:

There is a common difference between consecutive terms, that is

d = - 201 - (- 215) = - 187 - (- 201) = - 173 - (- 187) = 14

This indicates the sequence is arithmetic with sum to n term

=  [ 2a₁ + (n - 1)d ]

where a₁ is the first term and d the common difference

Here a₁ = - 215 and d = 14 , then

=  [ (2 × - 215) + (46 × 14) ]

    = 23.5 (- 430 + 644)

   = 23.5 × 214

   = 5029

You might be interested in
Solve 8x - 5y = 14 for y.
emmasim [6.3K]
9 is y is the answer
5 0
3 years ago
Read 2 more answers
Zoe used 3/8 of her ribbon to wrap a present. If she uses 9 feet of ribbon for the present how much ribbon did Zoe have it first
MArishka [77]

Let the total ribbon Zoe had was x feet.

Out of x feet, she used 3/8 part of it.

Hence, \frac{3x}{8}

3/8 part of the original ribbon is equal to 9 feet.

Hence, we get

\frac{3x}{8} = 9

=> Multiply 8 on both sides.

3x=72

Divide both sides by 3

\frac{3x}{3}=\frac{72}{3}

x=24 ft

Zoe had 24 feet of ribbon in starting... Answer

8 0
2 years ago
I need help with 23 please!!!
Sever21 [200]

Answer:

28 questions

Step-by-step explanation:

In the first 10 mins she answered 2/5 of 40 which is 16. The remaining amount is 24 questions and half of that is 12. So she answered 12 questions in 15 mins. Finally you add them to get 28 questions in 25 minutes.

3 0
3 years ago
Maisie counted her dimes. when she put them in groups of four she had two dimes left over. when she put them in groups of five s
Shalnov [3]
26 is the smallest number
4 0
3 years ago
254,817- 13?,125=118,692
Alexeev081 [22]

Answer:

118,692

Step-by-step explanation:

7 0
3 years ago
Other questions:
  • 2587 to the nearset thousand
    12·2 answers
  • How do you write 7231÷24
    14·2 answers
  • Lynn has a watering can that holds 8 cups of water. How many cups of water will 13 plants get
    13·1 answer
  • PLEASE HELP I NEED TO DO THIS ASSIGNMENT!!
    14·2 answers
  • What is the factorization of the trinomial below 4x2+28x+48
    5·2 answers
  • Now find the measure of ∠YOZ. Which angle relationship did you use?
    10·2 answers
  • Erica had $20 she spent on three gifts she spent 9 3/4 dollars on gift a and 4 1/2 dollars and gift b how much money did she hav
    15·1 answer
  • Mr. Abaya goy P700,000 loan for the expansion of his business payable monthly in 4years. How much os the monthly amortization if
    15·1 answer
  • Below are the supply and demand equations for blenders in a certain market. In these equations, p represents price, D represents
    15·1 answer
  • 5 x 7/20 and i really need help
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!