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iren [92.7K]
3 years ago
8

An auditorium has 40 rows of seats. There are 20 seats in the first row. Each row has 2 more seats than the row before. How many

seats are in the auditorium?
Mathematics
2 answers:
Bezzdna [24]3 years ago
7 0

Answer:

1600

Step-by-step explanation:

(40*2)20=

Reil [10]3 years ago
4 0

Answer:


20, /22,/24,/ 26



this is right answer your welcome

Step-by-step explanation:


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Which set of side lengths forms a right triangle?
Norma-Jean [14]
Hello!

The Correct Answer to this would 100% be:

"<span>4, 6, 10"

In Other Words, "B" or the 2nd Option.


Hope this Helps! Have A Wonderful Day! :)


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5 0
3 years ago
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forty percent of 25 students in the class are boys. write 40% as a reduced fraction. then find the ratio of girls to boys in the
Dafna11 [192]
25/10x4=10 boys

100%-40%=60%

25/10x6= 15

boys:girls
10:15
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3 years ago
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Find the point (x,y)<br>on the line y = x that is equidistant from the points (-6,2) and (10,-9)​
Nezavi [6.7K]

Answer:

(14.1, 14.1)

Step-by-step explanation:

If the point (x,y) is on the line y=x, then it has coordinates (x,x).

Find the distances from this point to points (-6,2) and (10,-9):

  • distance from (x,x) to (-6,2): \sqrt{(x-(-6))^2+(x-2)^2}=\sqrt{(x+6)^2+(x-2)^2}
  • distance from point (x,x) to (10,-9): \sqrt{(x-10)^2+(x-(-9))^2}=\sqrt{(x-10)^2+(x+9)^2}

Equate these distances:

\sqrt{(x+6)^2+(x-2)^2}=\sqrt{(x-10)^2+(x+9)^2}

Square this equation:

(x+6)^2+(x-2)^2=(x-10)^2+(x+9)^2\\ \\x^2+12x+36+x^2-4x+4=x^2-20x+100+x^2+18x+81\\ \\8x+40=-2x+181\\ \\8x+2x=181-40\\ \\10x=141\\ \\x=14.1

So, the coordinates are (14.1, 14.1)

6 0
4 years ago
Five quarts of oil and an oil filter cost $20.35. However, with a coupon, these items may be purchased for $4.43 less. What is t
kupik [55]
Hey there :)

5 quarts of oil and an oil filter - $20.35
With couple - $4.43 less
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We subtract 4.43 from $20.35
Why? That's the expected amount [ without a coupon ]

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-  4.43
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The final cost will be $15.92
4 0
3 years ago
Which pyramids with base area B and height h have equal volumes.
Reptile [31]

C and D

the volume ( V) of a pyramid is found using the formula

V = \frac{1}{3} × area of base × height

calculating each of the volumes gives

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(B)  V = \frac{1}{3} × 3.6 × 8 = 9.6 in³

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(D)  V = \frac{1}{3} × 6 × 8.4 = 16.8 in³

C and D have equal volumes


5 0
3 years ago
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