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
katen-ka-za [31]
3 years ago
11

The corner section of a football stadium has 6 seats on the first row. Each row after that has an additional 3 seats. How many s

eats would be on the 20th row?
32


63


103


342
Mathematics
1 answer:
julia-pushkina [17]3 years ago
7 0

9514 1404 393

Answer:

  63

Step-by-step explanation:

The number of seats in a row will give an arithmetic sequence:

  6, 9, 12, 15, ...

The first term is 6; the common difference is 3. The general term is ...

  an = a1 +d(n -1) . . . . . . n-th term of sequence with first term a1, difference d

The 20th term of the sequence is ...

  a20 = 6 +3(20 -1) = 6 +57 = 63

There would be 63 seats on the 20th row.

You might be interested in
Alex made a sketch for a poster contest. The sketch measures 4 in. × 5 in. The scale factor from the sketch to the finished post
leonid [27]
<span>4*5/2 = 10
5*5/2 = 25/2 = 12/5 

The poster is 10 x 12.5 inches. </span>
3 0
3 years ago
Which polynomial is a perfect square trinomal x^2 -6x +9 b) x^2 -2x +4 c) x^2 +5x +10 d) x^2 +4x +16
cestrela7 [59]
I hope this helps you

3 0
3 years ago
Factor the GCF: −12x4y − 9x3y2 + 3x2y3 (5 points)
garri49 [273]
-12x4y - 9x3y^2 + 3x^2y^3 = 3xy(-16 -9y + xy^2)
8 0
3 years ago
PLSSSSSSSS HELP CORRECT ANSWER GETS BRAINLIEST <br> Answers <br> 1.A<br> 2.B<br> 3.C
alexdok [17]

Answer: C

Step-by-step explanation:

7 0
3 years ago
Factor this polynomial completely.<br> x^2-8x+12
Sphinxa [80]

Answer:

(x - 2) (x - 6)

Step-by-step explanation:

Factor the following:

x^2 - 8 x + 12

The factors of 12 that sum to -8 are -2 and -6. So, x^2 - 8 x + 12 = (x - 2) (x - 6):

Answer:  (x - 2) (x - 6)

7 0
3 years ago
Read 2 more answers
Other questions:
  • What is the value of x?<br><br><br><br> Enter your answer in the box.
    10·2 answers
  • When using the least squares method, the line of best fit is the line that ? . A. minimizes the total area of the error squares
    6·1 answer
  • Simplest form 2 3/4 x 4/5 *
    10·2 answers
  • 13x = 79 ? Can somebody explain #9 b. PLEASE. Please solve using the system of linear equations by elimination.I would love it i
    6·1 answer
  • Find the area of the shaded region. ​
    8·1 answer
  • How do you place one set each of parentheses, brackets, and braces on the expression 7×20÷11-9+2÷8 with value being 9
    14·2 answers
  • Quadrilateral ABCD has vertices at A(0,0), B(0,2), C(6,2), and D(6,0). Find the vertices of the quadrilateral after a dilation w
    14·1 answer
  • Can some help with this problem
    9·1 answer
  • Mason goes to a store an buys an item that costs xx dollars. He has a coupon for 30% off, and then a 7% tax is added to the disc
    10·1 answer
  • Write the slope-intercept form of the equation of the line through the given point with the given slope.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!