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
iogann1982 [59]
2 years ago
8

A theater has 30 rows of seats. There are 22 seats in the first row, 26 in the second row, 30 in the third row, etc. How many pe

ople will the theater hold ?
Mathematics
2 answers:
OLga [1]2 years ago
4 0

Arithmetic Sequence

rows ---------32-n

first term ------------26-----------a

d---------------------------4

Sn = n/2( 2a+(n-1)d)

=32/2 (2*26+(31)4)

=16(52+124)

=16(176)

=2816 seats

solong [7]2 years ago
4 0

Total rows of seats, n = 30 rows of seats

First row, A1 = 22 seats

Second row, A2 = 26 seats

Third row, A3 = 30 seats

d = A3 - A2 = A2 - A1 = 4

then,

Sn = n/2 (2A1 + (n - 1)d)

Sn = 30/2 (2*22 + (30 - 1)4)

Sn = 15(44 + 116)

Sn = 2400 people

You might be interested in
Need help fast! Where does the line y=x-9 cross the y axis? Same with the line y=-2x-3 . Please give me a detailed method as wel
Goshia [24]
Y = x - 9 meets the y-axis at (0,-9) y = -2x - 3 meets the y-axis at (0,-3) This is because for every linear equation, there is a formula corresponding to it as y=mx + c, where (0,c) is where it meets the y-axis. As we assign the value of 0 to x, only c will be left to equal y, being the intercept.
5 0
3 years ago
A store pays $54 for a briefcase and marks the price up by 20%. What is the new price?
QveST [7]

Answer:

64.80

Step-by-step explanation:

The new price will equal the original price plus the markup.

The markup equal the original price * the markup percentage

markup = 54*.2

markup = 10.8

New price = original + markup

New price = 54+10.8

New price = 64.80

8 0
3 years ago
HELP ME PLEASE!!!
Monica [59]
W= (2b+6)
X=2A
Y=(4b)
Z
3a-8
4 0
2 years ago
a box contains 1 3/4 pounds of pancake mix. Jada used 7/8 pound for a recipe. What fraction of the pancake mix in the box did sh
ololo11 [35]

Answer:

Jada used 1/2 of the pancake mix in the box

Step-by-step explanation:

we know that

1\frac{3}{4}\ pounds -----> represent the 100% of the box

so

by proportion

Find what fraction represent \frac{7}{8}\ pounds

First convert mixed number to an improper fraction

1\frac{3}{4}\ pounds=\frac{1*3+4}{4}=\frac{7}{4}\ pounds

\frac{100}{(7/4)}=\frac{x}{(7/8)}\\ \\x= 100*(7/8)/(7/4)\\ \\x=50\%

Convert the percentage into fraction

50\%=50/100=1/2

6 0
3 years ago
4 5/9 + 2 5/6 + 1 2/3 <br><br><br> ANSWER ASAPPPPP
lubasha [3.4K]

Answer:

9.05

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Other questions:
  • Which statement regarding the function y=cos(x) is true?
    8·2 answers
  • Simplify 1/3(9a+b)-1/2(4a+2b)
    7·2 answers
  • Array with 2 rows of 5
    14·1 answer
  • The expression 3A + 2.5S gives the cost in dollars of A adult tickets and S student tickets. What is the cost of 2 adult tickets
    7·1 answer
  • What is 4/9 divded by 1/3
    7·2 answers
  • Write a positive or negative integer an increase of $15
    11·1 answer
  • A bicycle shop advertised all mountain bikes priced at a 1/3 discount. What is the amount of the discount if the bicycle origina
    12·2 answers
  • Which set of side lengths create a right triangle ?
    5·1 answer
  • Find the product<br> and<br> 3<br> 8<br> 17
    8·2 answers
  • Which value is furthest from 0 on the number line?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!