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Keith_Richards [23]
3 years ago
6

Given the sequence 4, 8, 16, 32, 64, ..., find the explicit formula. A. an=10(2n−1) B. an=5(2n−1) C. an=4(2n−1) D. an=20(2n−1)

Mathematics
1 answer:
creativ13 [48]3 years ago
8 0

Answer:

This is a geometric sequence. There is no answer according to the choices you have provided.

Step-by-step explanation:

The sequence is;

4, 8, 16, 32, 64, ....

The formula to find n^th , T_{n} , term is:

T_{n} = a × r , where a is the first term and r is the common ratio.

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4 0
4 years ago
Doreen has $20. She wants to buy a pair of earrings that costs $7.58 and a necklace that costs &13.36. Does Doreen have enou
Mariana [72]
Hi!

To solve this, we need to know how much the earrings and necklace cost together, then we need to know if it's more or less than how much she has ($20)

So first, add the costs together.

     7 . 5 8
+ 1 3 . 3 6
---------------
   2 0 . 9 4

The necklace and earrings cost $20.94 which is more than $20. 

The answer is no, Doreen does not have enough money.

Hope this helps! :)
-Peredhel
7 0
3 years ago
The endpoints of line GH are G(0,4) and H(-6,2). find the coordinates of the midpoint M
PtichkaEL [24]

Answer: The point G is G(18,-9)

Step-by-step explanation:

Midpoint:

Write the formula for midpoint of the A(x_1,y_1) and B(x_2,y_2).

[(x_1+x_2)/2,(y_1+y_2)/2]

G(x,y), H(-2,9)

(8,0) =[(x+(-2))/2,(y+9)/2]

(x+(-2))/2 =8

(x+(-2))=16

x-2 =16

x =18

(y+9)/2=0

y+9=0

y=-9

The point G is G(18,-9)

(answer found from user homeworkhelp on mathskey.com)

4 0
4 years ago
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