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kherson [118]
2 years ago
6

PLEASE HELP PLEASEEEEE I NEED IT QUICKLYYY

Mathematics
1 answer:
LenKa [72]2 years ago
7 0

Answer:

C

Step-by-step explanation:

If you need the explanation tell me

:D

You might be interested in
Find S18 for geometric series given a5=-6 and a2= -48
Ganezh [65]

an = a1r^(n-1)

a5 = a1 r^(5-1)

-6 =a1 r^4


a2 = a1 r^(2-1)

-48 = a1 r


divide

-6 =a1 r^4

----------------    yields   1/8 = r^3      take the cube root  or each side

-48 = a1 r                     1/2 = r


an = a1r^(n-1)

an = a1 (1/2)^ (n-1)

-48 = a1 (1/2) ^1

divide by 1/2

-96 = a1


an = -96 (1/2)^ (n-1)


the sum

Sn = a1[(r^n - 1/(r - 1)]

S18 = -96 [( (1/2) ^17 -1/ (1/2 -1)]

       =-96 [ (1/2) ^ 17 -1 /-1/2]

      = 192 * [-131071/131072]

 approximately -192

     

       

     

3 0
3 years ago
Plz help with this question
likoan [24]

Answer:i dont know to do this stuff but i think you have to divide i think ???

Step-by-step explanation:

6 0
3 years ago
PLEASE HELP ASAP!!!!!!!!!!!!!!
lianna [129]

Answer:

n^{25}

Step-by-step explanation:

Hi!

So, a radical is basically a fractional power.

Square roots are numbers to the 1/2.

For example, the square root of 4 is just 4^\frac{1}{2}, or 2.

So for cube root, the 1/2 changes to a 1/3.

This can then be rewritten as n^\frac{75}{3}

or n^{25}

4 0
2 years ago
Translate the expression: four times the difference of 7 and a number.
ivolga24 [154]

Answer:

4 x (7-x)

Step-by-step explanation:

4 times (multiply) the difference (subtraction) of 7 and a number (seeing as how you don't know that number use a variable, x)

6 0
1 year ago
There are 20 packages of beef in a restaurant freezer. The average weight of 14 of the packages is 2 lb. The remaining packages
Shtirlitz [24]
I belive that the answer is about 180 lb.
3 0
2 years ago
Read 2 more answers
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