Math
posted by Elizabeth .
I don't understand this quadratic equation: The ratio of the measures of the length and width of a rectangle is 5:7. the area of the rectangle is 1,715 square feet. Find the dimensions of the rectangle.

length = 7 x
width = 5 x
7x * 5 x = 1715
35 x^2 = 1715
x^2 = 49
x = 7
7 x = 49
5 x = 35
Respond to this Question
Similar Questions

math
a rectangle is twice as long as it is wide. if both of its dimensions are increased by 4m, its area is increased by 88m^2 find the dimensions of the original rectangle Original rectangle = w for width and 2w for length. Area = w x … 
Quadratic Equations
The length of a rectangle is 5 ft more than the width. If the area of the rectangle is 36 sq. ft what are the dimensions of the rectangle? 
math
The length, l, of a rectangle is 2 feet less than three times the width, w, of the rectangle. The area of the rectangle is 481 square feet. Find the length and width of the rectangle. how do i work this problem out? 
Quadratic Equation
The dimensions of a rectangle are such that its length is 3 in. more than its width. If the length were doubled and if the width were decreased by 1in., the area would be increased by 150 in.^2. What are the length and width of the … 
math
the length of a rectangle is 5cm ...the area of a rectangle is the same as that of a square whose is side measures 4cm..find the width of a rectangle 
Algebra Homework, HELP!
1) A rectangle has an area of 297 square inches and a width which is three inches less than four times the length. Find the length and the width of the rectangle. 2) Let x represent the length of the shorter leg in a right triangle. … 
Math
in a rectangle the measures of the base and the altitude are in a ratio of 1:4. I f the rectangle is equal in area to a square with a perimeter of 60 feet, find the dimensions of the rectangle HELP PLEASE TYSM!! 
algebra
The length of a rectangle is 3 more than twice the width. The area of the rectangle is 119 square inches. What are the dimensions of the rectangle? 
Algebra
The length of a rectangle exceeds twice its width by 4 feet. If the area of the rectangle is 286 square feet, find the dimensions. 
math
The length of a rectangle is 6x feet and its width is 3x feet. The area of the rectangle is 420  6x square feet. What is the perimeter of the rectangle, in feet?