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
katrin2010 [14]
3 years ago
5

Find S8 for the geometric series 3 + -6 + 12 + -24 +…

Mathematics
1 answer:
kirill115 [55]3 years ago
6 0
I guess you are asking to find the sum of the first 8 terms. If so, then:
Sum = a₁(1-rⁿ)/(1-r), where a₁ is the 1st term,  r=common ratio and n=number of terms:
the 1st term a₁ =3
common ratio r = - 2 (since -6/3 = - 2, and 12/-6 = - 2, etc.)

Sum = 3[(1- (-2)⁸]/(1-2) = 3(1- 256)/(1/2)
Sum = -1530

You might be interested in
A group of four friends went out for dinner. Their bill came to $50.95. They also need to pay 8% sales tax, and want to tip thei
bija089 [108]

Answer:

Enter cost and tip percent to get a tip amount and total dinner amount. Also split the total amount; divide among any number of people. ... Money, Pay, Taxes. > Tip ... Enter your meal or dinner cost along with the tip percentage. ... To calculate a gratuity or tip on any calculator it is a simple multiplication. ... All rights reserved

Step-by-step explanation:

After eating at your favorite restaurant, you know that the bill before tax is $52.60 and that the sales tax rate is 8%. You decide to leave a 20% tip for the waiter based on the pre-tax amount. How much ... To figure out the tip, you need to find 20% of $52.60. 0.2 \times 52.6

3 0
3 years ago
What translation rule can be used to describe the result of the composition of T < 4, −10 >(x, y) and T < −1, −9 >(x
Vikki [24]

The first translation picks a point and adds 4 to its x coordinate, and subtracts 10 from the y coordinate. In other words, it moves the point 4 units to the right and 10 units down.

Similarly, the second translation subtracts 1 to the x coordinate, and subtracts 9 from the y coordinate. In other words, it moves the point 1 unit to the left and 9 units down.

So, if you perform one translation after the other, you move the point 4 units to the right and 1 unit to the left along the x axis, and 10 units down and 9 more units down along the y axis.

The net result is a translation of 3 units to the right and 19 units down.

6 0
3 years ago
How fast is a car going if it travels 15 meters in 5 seconds?​
scoray [572]

The car is traveling 3 meters second

Step-by-step explanation:

you divide 15 by 5 and you get 3

5 0
3 years ago
Read 2 more answers
How could you find a slope of a graph ?
SIZIF [17.4K]

Choose whatever 2 points you want and you will always get the same slope. Calculate the rise and run.

Hoped this helped :)

3 0
3 years ago
Find the common property and use it to describe these sets. C={1,4,9,16} C is a set of x, where x depends on n.
Korolek [52]

Answer:

x depends on natural number.

8 0
3 years ago
Read 2 more answers
Other questions:
  • What is the volume of the figure?
    14·1 answer
  • Does 27/180 equal 3/20
    7·1 answer
  • A shoe store is selling a pair of shoes for $60 that has been discounted by
    12·1 answer
  • Three brothers share 2 sandwiches equally. how much does each brother<br> get?
    7·2 answers
  • If jobs arrive every 15 seconds on average, what is the probability of waiting more than 30 seconds?
    8·1 answer
  • NEED HELP ASAP PLEASE
    15·1 answer
  • Portions of three rectangles are shaded as shown. What is the area of the shaded region?
    6·1 answer
  • How is 2/5 + 3/5 = 1
    7·2 answers
  • HELP ME OUTTTTTTTTTTTTTTT
    14·1 answer
  • Help me please!!
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!