1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Nikitich [7]
3 years ago
15

In an auditorium, there are 21 seats in the first row and 29 seats in the second row. The number of seats in a row continues to

increase by 8 with each additional row.
(a) How many seats are in the 3rd,4th, and 5th rows.
(b) Is this an arithmetic or geometric sequence?
(c) How would you find the 100th row?
Mathematics
1 answer:
eimsori [14]3 years ago
7 0

Step-by-step explanation:

a) The 3rd row has 37 seats, the 4th row has 45 seats and the 5th row has 53 seats.

b) This is an arithmetic sequence because the values differ by a constant quantity.

c) You need to find the nth term of the sequence:

    21 = 1×8+x

    x=13

So the nth term is 8x +13.

The 100th term would be 813.

You might be interested in
What does x equal ?​
GuDViN [60]

Answer:

I'm pretty sure its 38°

7 0
3 years ago
Read 2 more answers
A pair of shoes is on sale for 15% off.With this discount,customers will save $9 if they buy the shoes.What was the original pri
tiny-mole [99]

15 percent off 9.00 is 7.65

Step-by-step explanation:

The difference is 1.35

3 0
2 years ago
P(Q) = 12/17<br> P(R) = 3/8<br> If Q and Rare independent events, find the PQ and R).
kodGreya [7K]

Answer:

9/34

Step-by-step explanation:

P(QnR) = P(Q) * P(R)

= 12/17 * 3/8

= 9/34

6 0
2 years ago
In a sale, a shop reduces all its prices by 10%.
stepladder [879]

Answer:

The phone roughly cost 302 dollars

Step-by-step explanation:

10% of 432=43.2

20% of 432=86.4

432-129.6=302.4

3 0
1 year ago
Find two consecutive even integers
Fantom [35]
You can set up a system of equations with x being the smaller number and y being the larger number. So the first equation would be 2y=5x-14 and the second equation would be x=y-2. You can solve by substitution and substitute y-2 into the x in the first equation to get 2y=5(y-2)-14. You can solve this out and it ends up simplifying to y=8. So you know the larger number is 8. So since the larger number is 8 and they are consecutive even integers, the smaller number must be 6. So the two numbers would be 6 and 8.
8 0
3 years ago
Other questions:
  • Mary has used 160 tiles to cover 40% of her back splash in her kitchen how many tiles will it take her to cover the entire back
    15·1 answer
  • A 36oz box of cereal costs $5.04. What is the cost per ounce?
    10·2 answers
  • which of the following is a correct equation for the line passing through the point -3,2 and having a slope m=2/3 check all that
    7·2 answers
  • What is the product of 6x – y and 2x – y + 2
    8·1 answer
  • P(5,3); y=4x<br><br>if you help me I will be thankful forever pls
    11·1 answer
  • Identify the factors of the terms of the expression. <br>3). 5+6a+11b<br>4). 13m-2n​
    12·1 answer
  • QuesLUIT<br> Which of the following would be equivalent to 32. 35? (4 points)<br> O 31. 37
    7·1 answer
  • Solve. s – 6 &lt; 24 {s | s &lt; 6} {s | s &lt; 10} {s | s &lt; 54} {s | s &lt; 90}
    12·2 answers
  • How many cups are in five and one half pint
    15·2 answers
  • Daniel practises his guitar for 40 minutes every day
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!