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Olin [163]
3 years ago
14

An auditorium has 20 seats on the first row, 24 seats on the second row, 28 seats on the third row, and so on and has 30 rows of

seats. how many seats are in the theater? arithmetic and geometric sequences and series is how u do this problem i just don't remember how
Mathematics
1 answer:
likoan [24]3 years ago
7 0
You just have to add 30 to the total of seats. Good luck.
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A bag contains 77 apples and 55 oranges. if you select 66 pieces of fruit without​ looking, how many ways can you get 66 ​apples
yuradex [85]
77C55*55 = (77! X 66!/ 2) = 139,755

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3 years ago
Amanda placed her finger on the origin of a regular coordinate plane. She marked a point after moving her finger 1 unit to the l
Lubov Fominskaja [6]

Answer:

( x , y ) = ( -1 , - 5 )

Step-by-step explanation:

Solution:-

- The rectangular coordinate system ( Cartesian ) is defined by two independent variables namely, "x and y".

- The values of both varibales lie on the horizontal and vertical line respectively, ( x & y ).

- The values on the horizontal axis also known as the x-axis is marked with a referece of x = 0 ( origin ). All the values to the right of the point of origin are denoted as positive units and all values to the left of the point of origin are denoted as negative units.

- Similarly, The values on the vertical axis also known as the y-axis is marked with a referece of y = 0 ( origin ). All the values to the above the point of origin are denoted as positive units and all values below of the point of origin are denoted as negative units.

- The axis are conventionally oriented such that 90 degrees angle is formed in between them and always denoted in the counter-clockwise direction.

In other words, if +x is pointing to the right then the +y will be pointed in the direction when +x is rotated counter clockwise to 90 degrees; hence, points upward.

- When Amanda starts off at the origin she is at the order pair  ( 0 , 0 ).

- She then moves her finger 1 unit to left ( -x ) and 5 units down ( -y ). Hence, she moves 1 unit along the -x direction and then moves 5 units down along -y direction.

Hence, she is at an ordered pair ( x , y ) = ( -1 , - 5 ) .

3 0
3 years ago
HELP ME PLEASE I WILL MARK YOU BRAINY THANK U SO MUCH
Mumz [18]

Answer:3

Step-by-step explanation:

8 times 3 times 1/2 =12

2 times 1/2 times 4=4

12/4=3

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3 years ago
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Irina-Kira [14]

sum is an answer to an addition problem, so we have to add 43 and z. z+43=72.98

Subtract 43 on both sides.

z=29.98

---

hope it helps

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The answer is 54 feet because 15+15+12+12=54
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