George wants to put carpeting in a rectangular living room and a square bedroom.The length and width of the living room is 12 fe
et by 18 feet. One side of the square bedroom is 13 feet. It will cost $3.50 per square foot to carpet the rooms. Write an expression that can be used to find the total amount George will pay for carpeting
Since George is going to put carpeting in two different rooms, one rectangular and one square, you need to find the area of each room, add the sum and then multiply the total area needed by the cost per square foot of carpet. The area of a rectangle is: a = lw, where l=length and w = width. The area of a square is: a = s², where s = side of the square. Take the sum of these two areas would be (12 x 18) + 13² or 213 + 169 = 382. Since the cost of the carpet is the same per square foot, you can multiply the entire sum by the cost of $3.50 or: 3.5((12 x 18) + 13²) or 3.5(382) = $1,337.
3 sin x + 5 cos x = 0 3 sin x = - 5 cos x /: cos x ( divide both sides by cos x ) 3 sin x / cos x = - 5 3 tan x = - 5 tan x = -5/3 x = arc tan (-5/3) x ≈ - 59.036°
