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KonstantinChe [14]
3 years ago
5

Please show step by step

Mathematics
1 answer:
spayn [35]3 years ago
3 0

Answer:

15th term of the sequence is 36

Step-by-step explanation:

Given in the question,

a₁ = First term = -20

d = common difference = 4

Expression for the nth term of an arithmetic sequence is,

T_n=a_1+(n-1)d

Here, n = number or term

We have to calculate 15th term of the sequence,

T_{15}=-20+(15-1)(4)

     = -20 + 56

     = 36

Therefore, 15th term of the sequence is 36.

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What is the difference between the number of solutions for a two-step equation and for a two-step inequality
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Answer:

A two-step equation is something like:

A*X + B = C

In this case, like in a linear equation, we have only one solution that can be found as:

A*X = C - B

X = (C - B)/A

In the case of a two-step inequality, we have something like:

A*X + B > C

Solving this we get;

A*X >  C - B

X > (C - B)/A

In this case, any value of X that is larger than  (C - B)/A is a solution, so in this case, we have infinite solutions.

That is the difference between the number of solutions for each case, in a two-step equation we have only one, while in the case of the inequality we have infinite.

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3 years ago
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Step-by-step explanation:

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Factor 26r3s + 52r5 – 39r2s4. What is the resulting expression?
zheka24 [161]

Answer:

The Given Expression is

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Option  13r^2(2 rs + 4 r^3 - 3 s^4) is correct option.

6 0
3 years ago
Read 2 more answers
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