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Answers by Maurice S.

If we create two variables, one for the length (L) and the other for the width (W), we can write two equations to model this situation:   The length is twice the width, so  L = 2W.   and the perimeter is equal to the area (with different units), so   2L +...

Math Marketing (answer)

Using Heather's pay rate of $6.55/hour and her 25 hours worked we multiply to find that she earned 25 * $6.55 which is $163.75 last week.   Her deductions are $42.11, which we will subtract from her gross, giving $163.75 - $42.11 = $121.64.   So she gets $121.64 to spend...

percent problem (answer)

If there were exactly equal numbers of beads in the box, there would be 125 blue and 125 yellow.   Since there are 60 fewer yellow than blue, there are 125 - (60/2) yellow, and 125 + (60/2) blue.   125 - (60/2) = 125 - 30 = 95, so there are 95 yellow beads in the box...

The total volume of your pool is 36 * 18 * 5 = 3240 cubic feet.  And there are 7.48 gallons in a cubic foot So, in gallons, the total volume of your pool is 3240 * 7.48 = 24,235.2 gallons. So, since we can get 4 gallons/minute, it will take 24,235.2/4 minutes to fill the pool =...

We can look at this either by specifying the number of small trucks, or the number of big trucks.  I am going to specify the number of high-capacity trucks, which I am going to label 'h'.   Now I am going to express the number of possible low-capacity trucks (l) in terms of the...

Looking at the equation, x+y=8, I can subtract either x or y from both sides to get the following two equations: x = 8 - y,     or    y = 8 - x. So I now have an expression which I can substitute for either x or y. Now, looking at the equation,...

Changing the subject of a formula on the mathisfun.com page refers to rearranging an equation to solve for a different variable.  This can only be done using valid algebraic operations, always remembering that both sides of the equation have to be changed in equivalent ways so that the equal...

The problem posed is 5-3*54. Now, 54 is 5*5*5*5. What, however, is 5-3?0 Now, 53 is 5*5*5 and 52 is 5*5. Extending this, 51 is 5 and 50 is 5/5 which is 1 So 5-1 would be 1/5, 5-2 would be 1/(5*5), and 5-3 would be 1/(5*5*5). So, 5-3*54 is (5*5*5*5)/(5*5*5) = 5....

To add some other differences to Dannie's answer: You affect something by changing it - the wonderful weather affected my mood! You effect a change in something - he was strong enough to effect a change in the pressure of the car on my foot. Something has an effect on you - The effect...

This is a somewhat surprising question, because it seems a little strange that the printed matter should cover 0 square centimeters.  However, given the information in the question, this would mean that the entire page must be margins. Looking at the width of the page, which is 10 centimeters,...