The seats at a local baseball stadium are arranged so that each row has five more seats than the row below it. if there are four seats in the first row, how many seats are in row 23?
119

114

115

110

is the answer 114? the seats at a local baseball stadium are arranged so that each row has five more seats than the row below it. if there are four seats in the first row, how many seats are in row 23?
119

114

115

110

The row has 114 seats hence the answer is B. 114

Step-by-step explanation:

The other guy did the math wrong but had the right answer you're supposed to use the explicit arithmetic sequence equation:

1/8 3/16 3/4

step-by-step explanation:

you put them as all the same denominator and multiply

(b) 240

step-by-step explanation:

first, we use the pythagorean formula using the given side lengths to find x. then we use x to find the side lengths. then we add the side lengths to find the perimeter.

pythagorean theorem formula:

a^2 + b^2 = c^2

(x - 20)^2 + (x - 40)^2 = x^2

x^2 - 40x + 400 + x^2 - 80x + 1600 = x^2

x^2 -120x + 2000 = 0

(x - 100)(x - 20) = 0

x - 100 = 0 or x - 20 = 0

x = 100 or x = 20

we see that the solution x = 20 must be discarded because it will give a negative side length and a side length of 0. the only valid solution is x = 100.

perimeter = sum of the lengths of the sides

perimeter = x + x - 20 + x - 40

perimeter = 3x - 60

replace x with 100.

perimeter = 3(100) - 60

perimeter = 300 - 60

perimeter = 240