2006-07-24 13:59:55 · 4 answers · asked by briander_101 1 in Science & Mathematics ➔ Mathematics
Length = 2w
Width = w
w + w + 2w + 2w = 42
6w = 42
w = 7
Width is 7
Length is 14
Double check: 14 + 14 + 7 + 7 = 42
2006-07-24 14:04:50 · answer #1 · answered by The Apple Chick 7 · 4⤊ 2⤋
You need to learn how to do word problems. You are going to face them in your schooling for a long time and in real life most problems are word problems.
1. Collect the data: P = 42, L = 2W and W = ?
2. Determine which formula you need: P = WL
3. Insert the known values and the unknown value X as the variable that you are trying to solve for.
P = WL => 42 = 2W times W => 42 = 3W once you know what W is you only have to divide W by 2 to get the length.
The rest of the solution is left for you to solve.
What is the most important part of these problems is not how to solve the equation, but how to set up the problem. It's a pattern of thinking called logic, once your figure that out things get a whole lot easier. Anyone can punch a few numbers into their calculator, but the key is knowing which numbers to punch in, and what the relationships are between the numbers.
2006-07-24 21:13:59 · answer #2 · answered by Dan S 7 · 0⤊ 0⤋
The rectangle is 7 inches by 14 inches. The Area is 98 square inches.
2006-07-24 21:04:16 · answer #3 · answered by svetlana 3 · 0⤊ 0⤋
how bout we stop asking our homework questions on the internet and try to figure them out by ourselves shall we ... you need to know how to do this now before it gets more complex down the road like it will ..... if you dont get how to do this the only way you will pass math is by the teacher feeling sorry for you because you didnt teach yourself a life skill
2006-07-25 00:25:47 · answer #4 · answered by recklessabandon1433 3 · 0⤊ 0⤋