1. The length of a wall is 12m more than its width. If the area of the wall is less than 50m², what could be its length? 2. The length of a garden is 5m longer than its width and the area is 14m2. How long is the garden? 3. Mang Juan owns a rectangular lot. The perimeter of the lot is 90m and its area is 450m2. What are the dimensions of it? 4. A rectangular garden has an area of 132m2 and a perimeter of 46m. What equation would describe the situation? 5. Jenny has two daughters. The age of the older daughter is 5 more than the age of the younger. The product of their ages is 104. How old is the daughter?
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pls pahelp po need napo brainliest ko at verified sa maayos na answer
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Answer:
since all are rectangles, we'll use common variables to represent area A, perimeter P, length x, and width y and take note that...
A = xy, and P = 2x + 2y
1. xy = 350 and 2x + 2y = 90
2. xy = 240 and 2x + 2y = 64
3. xy = 160 and x = 3 + 2y
4. x = 3 + 3y and xy = 126
there are 2 equations, 2 unknowns in each number... once you substitute one equation to the other... you can have a quadratic equation either in x (length) or y (width) variable... you can use the quadratic formula to solve either length x or width y... discard negative answer... choose only positive answers.
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