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
umka2103 [35]
3 years ago
7

the first row an auditorium has 24 seats. the second row has 28 seats, and the third row has 32 seats. if this patterns continue

s, how many seats are in the 20th row?

Mathematics
2 answers:
ANEK [815]3 years ago
8 0

\bf 24~~,~~\stackrel{24+4}{28}~~,~~\stackrel{28+4}{32}.....\qquad \stackrel{\textit{common difference}}{4} \\\\[-0.35em] \rule{34em}{0.25pt}\\\\ n^{th}\textit{ term of an arithmetic sequence} \\\\ a_n=a_1+(n-1)d\qquad \begin{cases} n=n^{th}\ term\\ a_1=\textit{first term's value}\\ d=\textit{common difference}\\[-0.5em] \hrulefill\\ a_1=24\\ d=4\\ n=20 \end{cases} \\\\\\ a_{20}=24+(20-1)4\implies a_{20}=24+76\implies a_{20}=100

brilliants [131]3 years ago
6 0

D the answer (i'm pretty sure) is D

You might be interested in
Maggie has 4 3/5 of icing to decorate cakes for a bake sale. Each container will cover 20 1/4 in2. How many square inches will i
ExtremeBDS [4]

Answer:

93\frac{3}{20} \ square \ inches.

Step-by-step explanation:

Given:

Maggie has 4 3/5 container of icing to decorate cakes for a bake sale.

Each container will cover 20 1/4 square inches.

Question asked:

How many square inches will it cover if she uses all of her icing ?

Solution:

Total number of container Maggie has = 4\frac{3}{5}

Each container will cover = 20\frac{1}{4} square inches.

Now, we can find easily that how many square inches it will cover by using all of her icing by unitary method:

Each container will cover = 20\frac{1}{4}

4\frac{3}{5} container will cover = 20\frac{1}{4}\times4\frac{3}{5} =\frac{20\times4+1}{4} \times\frac{5\times4+3}{5} \

                                                        =\frac{81}{4} \times\frac{23}{5} =\frac{1863}{20} =93\frac{3}{20}\ square\ inches

Thus,  it will cover 93\frac{3}{20} \ square \ inches ,if she uses all of her icing.

7 0
4 years ago
What is 1/5 of a minute
lapo4ka [179]
 <span>.2 times 60 equals your answer</span>
5 0
3 years ago
Hearts come off an assembly line in mixed colors.
vivado [14]

Answer:

diffrent bu y colour the drees

7 0
4 years ago
Is<br> sto<br> 40<br> w<br> &amp;<br> 7=<br> 11<br> Z<br> ws
FromTheMoon [43]

Answer:

I don't understand your question but thanks for the points ;) Kinda sucks when someone does it to you, right? Maybe you should stop commenting it on other people's questions so they can get the help they need

8 0
3 years ago
Read 2 more answers
May you guys help me with this question. i'm not good at percentage &lt;:3
PIT_PIT [208]

Answer:

i got 55% but...

Step-by-step explanation:

44/80 is 55

8 0
3 years ago
Other questions:
  • The product of Rick's height and
    11·1 answer
  • Which equation represents a line which is perpendicular to the line y=0
    10·1 answer
  • write the equation of the line that passes through the point (-7,-2) that is perpendicular to the x-axis
    10·1 answer
  • $12 for 3 paperback books;$28 for 7 paperback book
    5·2 answers
  • Evaluate the exponential expression: (2x)2nd power −3y2nd power =___, if x = 5 and y = 3.
    6·1 answer
  • What is -1/2,-3/4,-2/5 in least to greatest order?
    13·1 answer
  • Number 9 -_- like what is this
    11·2 answers
  • Please add a explanation
    5·1 answer
  • NEED HELP WITH THIS ASAP
    5·2 answers
  • The table displays the results of a survey of eating preferences of a sample of high school students. Use the data in the two-wa
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!