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Shtirlitz [24]
3 years ago
14

I need help please i will give brainly ​

Mathematics
2 answers:
Arisa [49]3 years ago
4 0

Answer:

C

Step-by-step explanation:

r-ruslan [8.4K]3 years ago
4 0

Answer:

C

Step-by-step explanation:

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Calculate S30 for the arithmetic sequence defined by {an}={3.1n-2}
timurjin [86]

Answer:

c) 1,381.5.

Step-by-step explanation:

First term = 3.1 *1 - 2 = 1.1

2nd term = 3.1*2 - 2 =  4.2

3rd term = 3.1*3 - 2 = 7.3

so the common difference d = 3.1.

S30  = (30/2) [ 2* 1.1 + (30-1) * 3.1)]

= 1,381.5.

3 0
2 years ago
Help me with writing this exression please
k0ka [10]

Answer:

3 * n^(1/6)

Step-by-step explanation:

The square root can be written as ^ 1/2

The cube root can be written as ^ 1/3

So the sixth root can be written as ^ 1/6

3 * n^(1/6)

5 0
3 years ago
Please help I don’t understand
JulsSmile [24]

Answer:

Vertical: G an B. Adjacent: C and F. Supplementary: A and E. Straight: A, E. Complementary:  G , B and E,A.

4 0
2 years ago
Pls help math pls pls​
Kobotan [32]
A^2 + b^2 = c^2 where a and b are the legs and c is the hypotenuse
7 0
2 years ago
Which choice is the explicit formula for the following geometric sequence?0.5, -0.1, 0.02, -0.004, 0.0008, ...
Minchanka [31]
a_1=0.5\\a_2=-0.1\\a_3=0.02\\a_4=-0.004\\a_5=0.0008\\\\a_n=a_1\cdot q^{n-1}\\\\q=a_2:a_1\to q=-0.1:0.5=-0.2\\\\a_n=0.5\cdot(-0.2)^{n-1}=0.5\cdot(-0,2)^n\cdot(-0.2)^{-1}\\\\=0.5\cdot(-0.2)^n\cdot(-5)=-2.5\cdot(-0.2)^n\\\\\boxed{a_n=-2.5\cdot(-0.2)^n}
6 0
3 years ago
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