Answer:
Step-by-step explanation:
Let the width of the rectangle = x
As length is 5 inches longer than width, we have to add 5 to width
Length = x + 5
Perimeter of ractangle = 56 in
2* (length + width) = 56
2*( x + 5 + x) = 56
2* (2x + 5) = 56
Use distributive property: a*(b +c) =(a*b) + (a * c)
2*2x + 2*5 = 56
4x + 10 = 56
Subtract 10 from both sides
4x = 56- 10
4x = 46
Divide both sides by 4
x = 46/4
x = 11.5
Width = 11.5 in
length = 11.5 + 5
= 16.5 in
(4x^2+3) + (3x^2+8) = 7x^2+11
Answer: the number of seats in the 10th row is 36 seats and the number of total seats in cinema is 66 seats because there is 25 rows and the first row started out at 18 seats
Step-by-step explanation:
None those two don’t correlate so I’m pretty sure it’s none