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Rudik [331]
3 years ago
7

Which of the following is the explicit rule for the sequence -3, 5, 13, 21 ... *

Mathematics
1 answer:
TiliK225 [7]3 years ago
7 0

Answer:

a_{n} = 8n - 11

Step-by-step explanation:

There is a common difference between consecutive terms in the sequence, that is

5 - (- 3) = 13 - 5 = 21 - 13 = 8

This indicates the sequence is arithmetic with n th term

a_{n} = a₁ + (n - 1)d

where a₁ is the first term and d the common difference

Here a₁ = - 3 and d = 8 , thus

a_{n} = - 3 + 8(n - 1) = - 3 + 8n - 8 = 8n - 11 ← note this is the second option, that is

f(n) = - 3 + 8(n - 1)

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6b+3m

Step-by-step explanation:

I hope this helped.

7 0
4 years ago
If log5(sqr root5)125=x and log2(sqr root 2) 64=y, the product of x and y is?
Wewaii [24]

Answer: x=15

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Step-by-step explanation:

4 0
4 years ago
Angles a and b are in the fourth quadrant. If sin a = -12/13 and cos b = 20/29 find tan (a+b)
valkas [14]

Answer:

tan (a+b) = 2.27  or (345/152)

Step-by-step explanation:

a and b are in the fourth quadrant

sin a = -12/13             tan a = - 12/5 = - 2.4

cos b = 20/29           tan b = - 21/20 =.1.05

tan (a+b) = (tan a + tan b) / (1 - tan a * tan b)

              = (-2.4 + - 1.05) / ( 1 - (-2.4)*(-1.05))

              = (-3.45) / (-1.52)

              = 2.27

8 0
3 years ago
Finish factoring the polynomial using factoring by grouping <br>y(y+5)+6(y+5)​
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Answer:

y(y + 5) + 6(y + 5) \\  = (y + 6)(y + 5)

6 0
3 years ago
Read 2 more answers
Please help i will give brainly :
Lubov Fominskaja [6]

1) The x-axis represents the energy (E), in joules. The y-axis represents the amplitude (x), in milimeters.

2) The curve depicts an <em>monotonous decrecent</em> rate of change.

3) The amplitude is directly proportional to the root square of the energy.

<h3>How to analyze a graph relationship between two variables</h3>

In this question we have a relationship between two variables, in which we must apply principles of <em>functional</em> analysis to respond three questions presented in the statement.

Now we proceed to answer the three questions below:

  1. <em>What is on the x-axis? The y-axis?</em> R/ The x-axis represents the energy (E), in joules. The y-axis represents the amplitude (x), in milimeters.
  2. <em>How would you describe the rate of change of the line?</em> R/ The curve depicts an <em>monotonous decrecent</em> rate of change, that is, the slope converges to zero when the energy tends to infinite.
  3. <em>What does this tell you about the relationship between amplitude and energy?</em> R/ The curve show a strong similarity with a function of the form x = A\cdot \sqrt{E}. Hence, the amplitude is directly proportional to the root square of the energy.

To learn more on functions, we kindly invite to check this verified question: brainly.com/question/12431044

5 0
2 years ago
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