3 years ago

What is the formula for the general term of the arithmetic sequence 1, 5, 9, 13, …?

1 answer:

5 0

The formula is

   a(n) = a(n-1) + 4 .

But to completely describe the sequence you've given,
these specifications also need to be stated:

   a(1) = 1
and
   n > 1 .

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One number is eight less than three times another number. If the sum of the numbers is 20, find the numbers.

mamaluj [8]

Answer:

7 & 13

Step-by-step explanation:

Let the first number be x

2nd number = 8 less than 3 times the other

2nd number = 3x - 8

Their sum = 20

X + 3x - 8 = 20

4x -8 = 20

Collect like terms

4x = 20+8

4x = 28

Divide both sides by 4

4x/4 = 28/4

X = 7

First number = 7

2nd number = 3x - 8

= 3(7) - 8

= 21 -8

= 13.

Therefore the numbers are 7 and 13

Pls mark as brainliest

4 0

3 years ago

Which of the following would be a correct interpretation of a 99% confidence interval such as 4.1 less than muless than5.6? Ch

Harrizon [31]

Answer: A. We are 99% confident that the interval from 4.1 to 5.6 actually does contain the true value of mu.

Step-by-step explanation:

The correct interpretation of a 99% confidence interval is that we are 99% confident that the true population mean falls in it.

Given 99% confidence interval : $4.1$

Then, the correct interpretation : We are 99% confident that the interval from 4.1 to 5.6 actually does contain the true value of mu.

8 0

2 years ago

C.<br> In (MN) = In M + In N, for M> 0 and N> 0<br> True or false

melisa1 [442]

That statement is true

8 0

2 years ago

19. 140% of 60<br> find the percent of the number. Explain your method

KonstantinChe [14]

Answer:

Step-by-step explanation:

is x 140

---- SO ... ------- = --------

of 60 100

(hit like pls)

60*140=100x

8400=100x

/100 /100

-------------------

84 = x

8 0

2 years ago

A campground rents bicycles by the hour. The total cost y to rent a bicycle, including deposit, is presented by the function y=1

Bogdan [553]

The function is discrete, as the fee is charged based on the hours

3 0

3 years ago