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Alenkinab [10]
3 years ago
8

Need help with my math, please jog my memory.. its been so long since I've done scientific notation. Just answer a few,, thats a

ll I'm asking for! Thank you!

Mathematics
1 answer:
Scrat [10]3 years ago
8 0

Answer:

Down below, look at the explanation, those are the answers.

Step-by-step explanation:

1) 8 * 10 to the power of 0

2) 5.4 * 10 to the power of 1

3) 2 * 10 to the power of -2

4) 2.29 * 10 to the power of 2

5) 1.87 * 10 to the power of 2

6) 4.52 * 10 to the power of -1

7) 6.009 * 10 to the power of -3

8) 4.52 * 10 to the power of 2

9) 3.5710 * 10 to the power of 4

10) 5.026 *10 to the power of -5

11) 7.87 * 10 to the power of 5

12) 4.52 * 10 to the power of 1

13) 9.345 * 10 to the power of 2

14) 4.52 * 10 to the power of -7

15) 1.1235 * 10 to the power of 10

Hope it helps!!

Let me know if I'm wrong...

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<span>Y(−3, 4) is the original

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The third term of an arithmetic sequence is 14 and the 9th term is -1. Find the first four terms of the sequence.​
Liula [17]

Answer:

The first four terms of the sequence are :  19, 16.5 , 14 , 11.5

Step-by-step explanation:

In the given sequence:

a(3) =  14, a(9)  = -1

The general term of a sequence in Arithmetic Progression is:

a(n) = a + (n-1)d

a(3) = a + (3 -1) d = a + 2 d

and a(9) = a + (9- 1 ) d = a  + 8 d

⇒   a + 2 d =  14      .........  (1)

and a + 8 d  = -1    ...........  (2)

Now, solving the given system of equation, we get:

From (1), a  = 14 - 2 d

Put in (2), we get:

a + 8 d  = -1                ⇒   14 - 2 d + 8d = -1

⇒  14 +   6d   = -1  

or,  6d = -1 -14 = -15

⇒  d = -15/6 = -2.5

or, d  = -2.5

Then a  = 14 - 2 d = 14 - 2(-2.5)  =14 + 5  = 19, or a  = 19

Now, first four terms of the sequence is:

a = 19

a(2) = a + 4 = 19 - 2.5 = 16.5

a(3) = a + 2d = 19 + 2(-2.5) = 19 - 5 = 14

a(4) = a  + 3d = 19 + 3(-2.5)  = 19  - 7.5  = 11.5

Hence, the first four terms of the sequence are :  19, 16.5 , 14 , 11.5

4 0
3 years ago
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