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Inessa05 [86]
2 years ago
13

I don't understand anything, please help :(

Mathematics
1 answer:
Butoxors [25]2 years ago
4 0

Answer:

i dont know

Step-by-step explanation:

i dont know how to do it

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A theater seats 2,816 people. The first row has 26 seats while the last row has 150 seats. Assuming the number of seats per row
wolverine [178]

Answer:

The theater has 32 rows

Step-by-step explanation:

The rule of the sum of n terms of an arithmetic sequence is S_{n} = \frac{n}{2} (a + l), where

  • a is the first term
  • l is the last term
  • n is the number of the terms

∵ The number of seats per row follows an arithmetic sequence

∵ The first row has 26 seats

∴ a = 26

∵ The last row has 150 seats

∴ l = 150

∵ The theater seats are 2,816

∴ S_{n} = 2,816

→ Substitute these values in the rule of the sum above to find n

∵ 2,816 = \frac{n}{2}(26 + 150)

∴ 2,816 = \frac{n}{2}(176)

∴ 2,816 = 88n

→ Divide both sides by 88

∴ 32 = n

∵ n represents the number of the rows

∴ The theater has 32 rows

3 0
3 years ago
Which expression is a possible leading term for the polynomial function graphed below?
Anon25 [30]

Answer:

D, 22x^9

Step-by-step explanation:

Here's a key for end behavior: Look at the leading term

x^even = x -> neg inf, f(x) -> pos inf; x -> pos inf, f(x) -> pos inf

-x^even = x -> neg inf, f(x) -> neg inf; x -> pos inf, f(x) -> neg inf

x^odd = x -> neg inf, f(x) -> neg inf; x -> pos inf, f(x) -> pos inf

-x^odd = x -> neg inf, f(x) -> pos inf; x -> pos inf, f(x) -> neg inf

6 0
3 years ago
Read 2 more answers
If is valid : a ²- b ² = 117 and a - b = 3, then what is the value of the expression a + b ?
juin [17]

Answer:

d is the correct answer from give questions

7 0
3 years ago
Kate wants to build a fence around her yard. The width of the yard is one-third the length. The perimeter of the yard is 80 feet
bezimeni [28]
The length would be 30 feet, and the width would be 10 feet.
4 0
3 years ago
Plz help me someone!
adoni [48]

Answer:

m+5nx(9-p)-6-2r

Step-by-step explanation:

here you go

4 0
3 years ago
Read 2 more answers
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