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vampirchik [111]
3 years ago
8

A theater has 20 rows of seats. If there are 4 seats in the 1st row 12 in the 2nd row, 20 in the 3rd row . How many seats are th

ere in total? Show and explain all work.
Mathematics
2 answers:
anzhelika [568]3 years ago
6 0

Answer:

164 seats

Step-by-step explanation:

you make the equation 4+ 8X to deteremine the seats and x equals the rows and you get your answer.

qwelly [4]3 years ago
6 0

Answer:

156 seats

Step-by-step explanation:

since you are adding 8 seats for each row you go up on, it will be 28 for the 4th row, 36 for the 5th, 44 for the 6th, 52 for the 7th, 60 for the 8th, 68 for the 9th, 76 for the 10th, 84 for the 11th, 92 for the 12th, 100 for the 13th, 108 for the 14th, 116 for the 15th, 124 for the 16th, 132 for the 17th, 140 for the 18th, 148 for the 19th, and 156 for the 20th.

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densk [106]

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check the picture below atop

if we move the sides closer and ever closer to each other, to the extent that one is right on top of the other, what is the length of the red side?  Well, assuming the two smaller sides are one pancaked on top of the other, the red side will be as long as 9 - 4 = 5.  However, the sides can't be on top of each other, because if that's so, we have a flat-line, and thus we wouldn't have a triangle.  So whatever the third side may be, it must be greater than 5.

check the picture below at the bottom

Now, if we move the sides away from each other, farther and farther to the extent that one is parallel to the other, then the third side will just be as long as 4 + 9 = 13.  However, we can't do that, because if that were to happen, we again will have a flat-line and not a triangle.  So whatever the third side may be, it must be less than 13.

4 0
2 years ago
What is the relationship of the line 3x - y = 5 to the line 6x - 2y = -7?
Marta_Voda [28]

Answer:

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3 years ago
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