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musickatia [10]
3 years ago
11

Write the following Arithmetic Sequence using a Recursive Formula: an = -7 + 3(n – 1)

Mathematics
1 answer:
Ostrovityanka [42]3 years ago
7 0

9514 1404 393

Answer:

  (b)  a[1] = -7, a[n] = a[n-1] + 3

Step-by-step explanation:

Comparing the given formula to the general form for the n-th term of an arithmetic sequence ...

  an = a1 +d(n -1)

we see that the first term (a1) is -7, and the common difference (d) is +3.

The recursive version of the sequence definition is ...

  a[1] = a1

  a[n] = a[n-1] +d

So, the appropriate choice is ...

  a[1] = -7, a[n] = a[n-1] +3

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The area of the square is 25 inches what is the measure on one side of the square??
Sindrei [870]

Answer:

5

Step-by-step explanation:

area of a square= side x side

\sqrt{25} = 5

3 0
3 years ago
It says factor 49x-28
kvasek [131]

Answer:

7(7x-4)

Step-by-step explanation:

We can factor a 7 from each term

49x = 7*7x

28 = 7*4

49x -28

7(7x-4)

6 0
4 years ago
Read 2 more answers
Susan is trying to decide between two jobs. One job pays $12 per hour for the first 36 hours and $15 per hour for any additional
nasty-shy [4]

Answer:

For the first question (For which job will she earn more if she works 40 hours a week), the answer is the second job.

For the second question (How much more per year will this be if she works 50 weeks per year), the answer is 25$ extra a year.

First i multiplied $12 times 36.

$12 x 36 = $432

Then i multiplied $15 times 4.

$15 x 4 = $60

Now add those together

$432 + $60 = $492

That's how much she would make in a week for the first job, if she worked 40 hours a week.

For the second job, i did the exact same process.

$11.50 x 35 = $402.5

$18 x 5 = $90

$402.5 + $90 = $492.5

She would get 50 more cents a week, if she worked 40 hours a week.

For the second question, i multiplied the first job total by 50, since she is working 50 weeks a year.

$492 x 50 = $24,600

Thats her total of a year, for the first job.

Do this with the second job.

$492.5 x 50 = $24,625

As you can see, she would get $25 more in the second job, than the first job.

I hope this helped!

7 0
3 years ago
Does 7(y−8)=7y+42 have one solution, no solution, or infinite solutions
jekas [21]
No solution is your answer
7 0
3 years ago
Read 2 more answers
I need help with this
Tresset [83]

Answer:

12=34+45

Step-by-step explanation:

34+12=34

8 0
3 years ago
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