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
docker41 [41]
3 years ago
5

How would i find the explicit formula for the arithmetic sequence -11,-3,5,12

Mathematics
1 answer:
dimulka [17.4K]3 years ago
5 0

Arithmetic Sequence Formula:

a_n=a_1+(n-1)d

We have:

a_1=-11,\ a_2=-3,\ a_3=5,\ a_4=12,\ ...

d=a_{n+1}-a_n\to d=-3-(-11)=-3+11=8

Substitute:

a_n=-11+(n-1)(8)=-11+8n-8=8n-19

Answer: a_n=8n-19

You might be interested in
When Anita planted a large bush in her garden, it was 5 feet tall. Now it is 40% taller. How tall is the bush now?
goblinko [34]

Answer:

7 feet

Step-by-step explanation:

the new height of the bush can be represented in percentage form as 100% + 40% = 140% = 1.40

1.40 x 5 = 7 feet

Method 2

find 40% of 5 feet

0.4 x 5 = 2

Add 5 + 2 = 7 feet

7 0
3 years ago
A large chess tournament starts with 1024 players. How many players will be remaining after 6 rounds
docker41 [41]

Answer:

16

Step-by-step explanation:

After reach round the number of players will be reduced by a half.

After 1 round it will be 1024 * 11/2 = 512, after  2 rounds it will be 1024 * (1/2)^2 = 256 etc..

Thus, after 6 rounds  the remaining players will be 1024* (1/2)^6

=  16  (answer)

5 0
4 years ago
Help me please??????
Deffense [45]
If Jayden needs 900, and he already has 375, first you need to find out how much more money he needs. Do that first.

2. His job pays him 155 a week, so 155w. If he needs to make at least 900, that means that it would be ok if he earned equal to 900, or more. So the amount he earns is greater than or equal to 900.

3. Solve for w. This should give you your answer.

I hope this helps!
5 0
3 years ago
Ms kashipour gave the class 12 min to read . Carrie reads 51/2 pages in that time . At what rate in pages per hour did Carrie re
lianna [129]

Her rate of reading was = 51/2 /12 = 51/24 per hour

It means she red 51/24 pages in one hour

5 0
3 years ago
Solve y=f(x) for x then find the input when the output is 6 <br><br> f(x)=x+9
r-ruslan [8.4K]

x = -3

So to figure this out we can readjust the equation to make it easier to solve

f(x) = x + 9 is equal to x+9 = 6

From here we can just subtract 9 from both sides and we get our answer!

x+(9-9) = (6-9)\\x = -3

4 0
3 years ago
Other questions:
  • Find the approximate side length of a square game board with an area of 186in2
    11·2 answers
  • Olivia has $250.00 when she opens her cupcake shop inthe morning. she sells each cupcake for $3.50.
    13·2 answers
  • 1. The graph opens
    11·1 answer
  • There is a total of 2,512 people attending the fun fair. 5/8 of sttemdees are students and 1/4 of attendees are parents. the res
    6·1 answer
  • 2log↓3 ( x-4) - log↓3 9 =4
    8·1 answer
  • HELPS PLS 44 and 17 what is y and x
    15·1 answer
  • In ABC, mC = 30 and a = 8. If the area of the triangle is 12, what is the length of side b?
    15·1 answer
  • If f (x) = -2x2 + 6, find f (-3).
    7·2 answers
  • A circle has a diameter with endpoints at (0, 4) and (0, –8). What is the approximate area of the circle?
    8·2 answers
  • A researcher collated data on Americans’ leisure time activities. She found the mean number of hours spent watching television e
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!