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KIM [24]
3 years ago
13

My geometric sequence is 16,-3.2,0.64,-0.128..what is the 7th term

Mathematics
1 answer:
USPshnik [31]3 years ago
6 0

Answer:

Step-by-step explanation:

In a geometric sequence, the nth term is

T_n = ar^(n-1)

a = first term

r = common ratio which can be gotten by dividing second term by first term, third term by second term etc

Therefore

a = 16

r = -3.2 ÷ 16

r = -0.2

T_7 = ar^(7-1)

T_7 = ar^6

T_7 = 16[(-0.2)^6]

T_7 = 16(0.000064)

T_7 = 0.001024

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The equation 7.50(n+0.2)=189 can be used to model the number of books, n , maggie orders. How many books does maggie order?
Reptile [31]
N= number of books

7.50(n + 0.2)=189
multiply 7.50 by each term in parentheses

(7.50*n) + (7.50*0.2)= 189
7.50n + 1.5= 189
subtract both sides by 1.5
7.50n= 187.50
divide both sides by 7.50
n= 25

ANSWER: She ordered 25 books.

Hope this helps! :)
4 0
3 years ago
The sum of three consecutive multiples of 4 is 444. Find the multiples.<br> PLEASE ANS FAST PLS
SOVA2 [1]

Answer:

144,148,152

Step-by-step explanation:

Here we will have, 4x + 4(x+1) + 4(x+2) = 444

=> x + (x+1) + (x+2) = 111 (dividing both sides by 4)

=>x + x+1 + x+2 =111

=> 3x + 3 = 111

=> 3x = 108

=> x = 36.

So, the three desired numbers 4x, 4(x+1) and 4(x+2) are,

4*36, 4*(36+1) and 4*(36+2)

That means the numbers are, 144, 148 and 152.

8 0
3 years ago
A ball is thrown straight up into the air. The table shows the data collected over t seconds, where h(t) is the height of the ba
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Answer:

The maximum height of the ball was 2.5 seconds after it was thrown.

Step-by-step explanation:

8 0
3 years ago
Which shows 38 1 , 000 written as a decimal? A. 0.38 B. 0.308 C. 0.038 D. 0.380
Softa [21]

Answer:

C. 0.038

Step-by-step explanation:

If you divide 38 by one thousand, you get 38 thousandths as a decimal which is 0.038.

Hope this helps! :)

3 0
3 years ago
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It’s five that’s easy
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4 years ago
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