2 years ago

What is the sum of the n terms of the series 5 10 20 40 . . . ?

1 answer:

5 0

Hello,

$5+10+20+40+...\\
=5(1+2+2^2+2^3+...+2^{n-1})\\
$
$=5*\frac{5^n-1}{4}$

You might be interested in

Vilka [71]

Answer:

$m=-1$

Step-by-step explanation:

Start by multiplying both sides by 2, this will get rid of the fraction on the left side and will result in the equation $12m+6=2m-4$

Then, subtract 2m from both sides, which leaves the equation as $10m+6=-4$

Then, subtract 6 from both sides, this results with the equation $10m=-10$

Finally, divide both sides by 10, this will result in m=-1

3 0

2 years ago

Mice21 [21]

I think it would be It would be 4.80

5 0

2 years ago

ololo11 [35]

Bracelet

There are 2 bracelets and she possibly picks three. :)

5 0

2 years ago

Mumz [18]

Answer:

p to the power of 12

Step-by-step explanation:

hope this helps!

4 0

2 years ago

WARRIOR [948]

Answer:3^2=9

U are gonna times 3 two times

Example:3x3=9

7 0

3 years ago