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
Ierofanga [76]
2 years ago
15

An auditorium has 80 rows of seats and the number of seats per row increases at a constant rate. If there are 32 seats in the 8t

h row, and 68 seats in the 20th row, how many seats are in the last row?
Mathematics
1 answer:
expeople1 [14]2 years ago
4 0
To find how many seats in the 80th row, you need to figure out the pattern from the 8th row to the 20th row.

To do this, you can create a table showing possibilities from the 8th to the 20th.

I started with 32 at the 8th and added 2 each time.  This was only 56 by the 20th.

Then I added 3, and this got me to 68 by the 20th row.

Then you can work backwards to find how many seats in the 1st row.  I got 11.

From here you can create an equation that you could use to solve for the 80th row.

11 + 3(r - 1), where r is the number of rows.

Substitute in 80 for r.

11 + 3(80 - 1)
11 + 237
248 seats

There are 248 seats in the 80th row.
You might be interested in
Which property is shown?
solniwko [45]

Associative Property of Addition hope this helps

8 0
3 years ago
What is the sum of 2.5 x 10^4 and 3.4 x 10^4
navik [9.2K]

5.9 x 10^4

59000

That is the answer C

3 0
3 years ago
According to the picture, whats the answer?
Kamila [148]

Answer:

84 meters

Step-by-step explanation:

5 x 6 = 30 hypotenuse side not shown

3 x 4 ÷ 2 x 2 = 12 red (both ends)

3 x 6 = 18 green side

6 x 4 = 24 blue side

3 0
3 years ago
Consider the diagram and angle measurements shown below.
mel-nik [20]

Answer:

C

Step-by-step explanation:

8 0
2 years ago
Read 2 more answers
Can some please help me with this would you rather problem.
Nata [24]

Answer:

I would rather buy one and get the second 25%off

Step-by-step explanation:

6 0
2 years ago
Other questions:
  • bill is currently twice as old as John in 10 years their combined age will be 44 how old is Bill now.
    11·1 answer
  • What is the equation for the line?
    7·2 answers
  • Combine like terms: ab-a2+42-5ab+3a2+10
    5·1 answer
  • Every rational number is a natural number. A. The statement is true because the set of rational numbers is a subset of the set o
    12·1 answer
  • What is the value of
    14·1 answer
  • Triangle WXY is isosceles. ∠YWX and ∠YXW are the base angles. YZ bisects ∠WYX. m∠XYZ = (15x)°. m∠YXZ = (2x + 5)°. What is the me
    13·2 answers
  • When 0 is the divisor or the denominator, the quotient will be?
    9·1 answer
  • If x and ​(19x+30​) are the measures of complementary​ angles, what is the measure of each​ angle?
    6·1 answer
  • Jerold reads at a rate of 3 pages in 2 minutes. He as a 2427 page novel to read and a 906 page mystery book to read. How long wi
    5·1 answer
  • What is the determinant of the image shown?<br> –14<br> –3<br> 8<br> 11
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!