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Karo-lina-s [1.5K]
2 years ago
14

An auditorium has 51 seats in the first​ row, 55 seats in the second​ row, 59 seats in the third​ row, and so on. Find the gener

al term of this arithmetic sequence and the number of seats in the twentieth row.
The general term a Subscript nan of this arithmetic sequence is nothing. ​(Simplify your​ answer.)
Mathematics
1 answer:
qaws [65]2 years ago
5 0

Answer:

127 seats

Step-by-step explanation:

r= row               s= seats

s= 47+4r

s= 47+4*20

s= 47+80

s=127  

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What is RS? Please help will give Brainlyest.
IceJOKER [234]

Answer:

<h2>         RS = 47</h2>

Step-by-step explanation:

RV=VU and SW=WT    ⇒    VW=\dfrac{RS+UT}{2}

Therefore:

3x+5=\dfrac{2x+15+6x-37}{2}\\\\3x+5=\dfrac{8x-22}{2}

3x + 5 = 4x - 11        {subtract 5 from both sides)

3x = 4x - 16             {subtract 4x from both sides)

-x = -16                   {divide both sides by (-1)}

x=16

So:

RS = 2x + 15 = 2×16 + 15 = 32 + 15 = 47

3 0
2 years ago
A twelve-sided die with sides labeled 1 through 12 will be rolled once. Each number is equally likely to be rolled.
kykrilka [37]

Answer:

1/6

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6 0
2 years ago
TANGENT LINES FIND PERIMETER
Harlamova29_29 [7]
There is a theorem that says that, two tangent lines onto a circle that start from the same point are equal. For example, if we were to label the polygon ABCD, the tangent lines going from point A are equal, the lines going from point B are equal, etc.

Since we now know this rule, we can see that, for each point of the polygon you are given 1 out of 2 tangent lines for that point. Using this theorem, we can say that the other tangent line is equal to the first.

So, the bottom two tangents are 98 and 98, the right-side are both 22 and 22, the top are both 27 and 27, and the left are 22 and 22. We need to find the perimeter, or the sum of all the sides of the polygon. Seeing as the sides of the polygon are formed by all the tangent lines, we just have to find the sum of all the tangent lines.

98 + 98 + 22 + 22 + 27 + 27 + 22 + 22 =
= 196 + 88 + 54 (or 2*98 + 4*22 + 2+27) =
= 338 inches

I hope this wasnt too confusing.
8 0
3 years ago
Solve the equation 2<br> 16x + 20 = 0 to the nearest tenth.
Alenkasestr [34]

Answer:

x ≈ - 1.3

Step-by-step explanation:

16x + 20 = 0

16x + 20 - 20 = 0 - 20

16x = - 20

16x ÷ 16 = - 20 ÷ 16

x = - 1.25

x=-1\frac{1}{4}

- 1.25 rounds to - 1.3

3 0
3 years ago
Read 2 more answers
Write the linear equation for this table.
Vedmedyk [2.9K]

Answer:

its A

Step-by-step explanation:

8 0
2 years ago
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