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
Ket [755]
2 years ago
10

What is the value of a3 in the sequence? 5, 10, 20, 40, 80...

Mathematics
1 answer:
laiz [17]2 years ago
4 0
I can’t see a3 do you have a picture
You might be interested in
​ f(1)=72 f(n)=f(n−1)+9 ​ Find an explicit formula for f(n)
myrzilka [38]

a_{n} = 9n + 63

generate the first few terms using the recursive equation

f(1) = 72

f(2) = 72 + 9 = 81

f(3) = 81 + 9 = 90

f(4) = 90 + 9 = 99

the sequence is 72, 81, 90, 99, .....

This is an arithmetic sequence whose n th term formula is

a_{n} = a_{1} + (n - 1 )d

where a_{1} is the first term and d the common difference

d = 99 - 90 = 90 - 81 = 81 - 72 = 9 and a_{1} = 72

a_{n} = 72 + 9(n - 1) = 72 + 9n - 9 = 9n + 63 ← explicit formula


8 0
2 years ago
Write down all the prime numbers between 15 and 25
Tju [1.3M]
17,19,23 are the prime numbers
8 0
2 years ago
Read 2 more answers
a water tank is 5cm tall and has a diameter of 3,5m . calculate the capacity (volume) of the tank .use π=3,14​
Evgesh-ka [11]

Step-by-step explanation:

Firstly convert the diameter into cm

t480812.5cm³hus 3.5×100=350cm

Volume=

\frac{\pi {d}^{2} h}{4}

\frac{3.14 \times (350) {}^{2} \times 5 }{4}

=480812.5cm³

8 0
2 years ago
Can anyone help me with my homework?
Evgesh-ka [11]

I want more points next time....Hehehee!

<h2><u>______________________</u></h2>

<em>Solution in attachments!</em>

6 0
2 years ago
Is (1, 4) a solution to this system of equations? 3x + y = 7
inysia [295]
B. Yes, (1,4) is a solution
8 0
2 years ago
Other questions:
  • A community college has 2,000 students and 50 instructors. Next year the enrollment will be 6,000. How many new instructors shou
    7·1 answer
  • 48 is half of what number the number is half of 192?
    15·1 answer
  • What isfour hundred eight thousand. Seventeen in expanded form
    8·2 answers
  • Please help me with this!!!!
    5·2 answers
  • Three times Tara's age decreased by 2 years is the same as twice her age increased by 13 years. How old is
    5·1 answer
  • What is the value of 2 power 1​
    12·2 answers
  • The cost to join the Ski Club is $270. You pay a deposit of $95.50 and plan to save an additional $20 per week to pay for the co
    13·1 answer
  • Is it a function or not a function?
    14·2 answers
  • Help please! will mark brainliest!
    8·2 answers
  • (a) Amy pumped 35 gallons of water out of her pool. This was done over a period of 5 minutes at
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!