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
Sholpan [36]
3 years ago
8

The value of the 4th term is 80. the sequence is being doubled each step what is the 7th term?

Mathematics
1 answer:
leva [86]3 years ago
8 0
This is a geometric sequence with common ratio (r) = 2.
an = ar^(n - 1)
a4 = a(2)^(4 - 1) = a(2)^3 = 8a
8a = 80
a = 80/8 = 10

7th term (a7) = 10(2)^(7 - 1) = 10(2^6) = 10(64) = 640
You might be interested in
Select the best possible first step to solving the system by first eliminating the x variable.3x − 9y = 6 2x − 11y = 6?
musickatia [10]
\left\{\begin{array}{ccc}3x-9y=6&|divide\ both\ sides\ by\ 3\\2x-11y=6&|divide\ both\ sides\ by\ (-2)\end{array}\right\\\\\underline{+  \left\{\begin{array}{ccc}x-3y=2\\-x+5.5y=-3\end{array}\right}\\.\ \ \ 2.5y=-1
4 0
2 years ago
Read 2 more answers
Rita earns $17.00 per hour. If she gets a 6% raise, what will be her new hourly wage?
ipn [44]

multiply 17 by 6%

17 * 0.06 = 1.02 increase

17 +1.02 = 18.02 new hourly wage

8 0
3 years ago
226Ra has a half-life of 1599 years. How much is left after 1000 years if the initial amount was 10 g?
Ray Of Light [21]
\bf \textit{Amount for Exponential Decay using Half-Life}\\\\
A=P\left( \frac{1}{2} \right)^{\frac{t}{h}}\qquad 
\begin{cases}
A=\textit{accumulated amount}\\
P=\textit{initial amount}\to &10\\
t=\textit{elapsed time}\to &1000\\
h=\textit{half-life}\to &1599
\end{cases}
\\\\\\
A=10\left( \frac{1}{2} \right)^{\frac{1000}{1599}}
8 0
3 years ago
Name the three-dimensional figure that is formed by folding the net.
Ivanshal [37]
A triangular Prism I would say but it does have rectangles
3 0
2 years ago
Read 2 more answers
After school, Emily had a science club meeting for 40 minutes, followed by a choir rehearsal
aniked [119]

Answer:

3:15 pm

Step-by-step explanation:

(1:25 + 40 min) = 2:05 + 75 min= 3:15

7 0
2 years ago
Other questions:
  • 2.789 in word form and in expanded form
    15·2 answers
  • alma is making 3 batches of tortillas. Each batch needs 3/4 cup of water. She only has a 1/4 cup measure. How many times must al
    10·1 answer
  • 50 points!!! Find the 4 arithmetic means between -3.2 and 5.8. List answer with all numbers, state the common difference, and sh
    13·1 answer
  • D
    5·1 answer
  • Given: AB ≅ BC , m∠MOC = 135° OM − angle bisector of ∠AOB Prove: ∠ABO ≅ ∠CBO
    10·1 answer
  • Find the surface area of the cone. Round your answer to the nearest tenth..
    14·1 answer
  • Which relationships describe angles 1 and 2?
    7·2 answers
  • Any help? Please!!!<br><br> It's due today.
    8·1 answer
  • A summer camp wants to buy 2,944 popsicles. If there are 8 popsicles in each box, how many boxes should the camp buy?
    5·2 answers
  • 75 is what percent of 150
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!