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Karo-lina-s [1.5K]
3 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]3 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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Answer:

false

Step-by-step explanation:

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3 years ago
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What is the slope of a line that is perpendicular to the graph of y = –3x?
Morgarella [4.7K]

Step-by-step explanation:

Hey there!

The equation is; y= -3x

or, 3x+y = 0.......... (I)

From equation (I)

slope(m1) =  \frac{ - coeff. \: of \: x}{coeff. \: of \: y}

m1=  \frac{ - 3}{1}

Therefore, m= -3

Now, As per the condition of perpendicular lines;

M1*M2 = -1

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Therefore, the slope of a line which is perpendicular to the equation is; 1/3.

<em><u>Hope</u></em><em><u> </u></em><em><u>it</u></em><em><u> helps</u></em><em><u>.</u></em><em><u>.</u></em><em><u>.</u></em>

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3 years ago
A line includes the points (9,0) and (-9,2). What is its equation in slope-intercept form?
horsena [70]
Y=mx+b

First use the two point slope formula to find m

(y2-y1)/(x2-x1)
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Next use the point slope formula to find the answer

y-y1=m(x-x1)

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Now use Distributive Property 
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4 years ago
Will give brainliest
kow [346]

Answer:

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3 years ago
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72/160=?

Divide 72 by 160 to find the percent.

72/160=0.45

72 is 45% of 160.

I hope this helps :)

5 0
3 years ago
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