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
charle [14.2K]
3 years ago
12

A sequence is defined recursively by f(1)=16 and f(n)=f(n-1)+2n. Find f(4) 1) 32 2) 30 3) 28 4) 34

Mathematics
1 answer:
ella [17]3 years ago
5 0
f(1)=16 \ \ \ and \ \ \ \ f(n)=f(n-1)+2n \\ \\f(2)=f(1)+2\cdot2=16+4=20\\ \\f(3)=f(2)+2\cdot3=20+6=26\\ \\f(4)=f(3)+2\cdot4 =26+8=34

Ans.\ 4)
You might be interested in
What is the original number if 9/10 of the number is 90?
coldgirl [10]
It would be 100. If you divide 100/10, you get 10, multiply that by 9 and you’d get 90.
6 0
3 years ago
Read 2 more answers
Solve each system of equations using the elimination method. check the solution.
Blababa [14]
5. the answer is (x,y) = (-1,5)

6. the answer is (x,y) = (0,2)

7. the answer is (x,y) = (-2,1)

8. the answer is (x,y)= (5,0)
4 0
3 years ago
What is 8 hours and 37 minutes in seconds?
vichka [17]
Answer: 31,020 seconds
7 0
4 years ago
Read 2 more answers
Luis went to the bank he deposited $20 into his savings account and withdrew $40 from his checking account. Write integers to de
aliina [53]

Answer:

Savings Account: x+20

Checking Account:x-40

7 0
3 years ago
Radical 8 plus radical 18
maxonik [38]

Answer:

5√2

Step-by-step explanation:

√8 + √18

We first have to find what is the largest perfect square that goes into √8:

4 is the largest, so therefore → √8 gives you 2√2:

Work: √4 * √2 → 2 * √2 → 2√2

Now we have to find what is the largest perfect square that goes into √18:

9 is the largest, so therefore → √18 gives you 3√2:

Work: √9 * √2 → 3 * √2 → 3√2

Because 2√2 and 3√2 have the same "base" of √2, they can be added together:

2√2 + 3√2 = 5√2 (The "bases" are to be left alone!)

7 0
3 years ago
Other questions:
  • What is n?<br> 6/5 = n/15
    6·2 answers
  • Find the value of x.
    15·1 answer
  • What is the rule for the reflection ?
    13·1 answer
  • Solve for X, rounding to the nearest hundredth.<br> 25. 33x = 250
    13·1 answer
  • How do you solve 9 2/3 minus 3 5/6
    14·1 answer
  • HELP!! which is the measure of wx shown in the diagram below
    14·2 answers
  • Answer this question: -5x - 10y + 7x + 15y<br> Please try to explain it as best as possible &lt;3
    9·2 answers
  • What relationship do the ratios of sin x° and cos y° share? A right triangle is shown with one leg measuring 12 and another leg
    9·1 answer
  • What is the value of 8 in 24.387
    7·2 answers
  • How many times larger is 3 x 10^6<br> than 3 x 10^1
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!