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Freefalling objects |
2007-01-25 |
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From Patricia:
How long will it take a stone dropped from atop a 1000-meter tall building to reach the ground?
Answered by Stephen La Rocque. |
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6.9 is 11.5 percent of what number? |
2007-01-25 |
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From David:
6.9 is 11.5 percent of what number?
Answered by Penny Nom. |
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Can you make an array for 19? |
2007-01-25 |
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From Caleb:
can you make an array for 19
Answered by Penny Nom. |
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The scale on a drawing |
2007-01-24 |
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From Sandra:
If I have a 1cm x 1cm square and enlarge it to a 2cm x 2 cm square, does that show a 1:2 scale or 1:4 scale? Do you use the length only or is area involved?
Answered by Penny Nom. |
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Percent elevation gain |
2007-01-24 |
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From Susan:
okay... so if I hike Gregory Canyon and it's a 1.1 mile hike with a 900 foot elevation gain, what's the percent elevation gain?
Answered by Stephen La Rocque. |
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An algebra exercise |
2007-01-24 |
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From Clara:
Given x + 2y = -2 and x - 2y = 18, find:
a) x^2 - 4y^2
b) x^2 + 4y^2
Answered by Stephen La Rocque and Penny Nom. |
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Interest compounded daily |
2007-01-24 |
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From Scott:
I would like to know what 4.88% interest compounded daily would amount to on $24,000.
Answered by Penny Nom. |
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A college student jogs from his home to the beach |
2007-01-23 |
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From Garmani:
A college student jogs from his home to the beach at 8 miles per hour. He visits with his friends on the beach for 4 hours, and then his friends drive him home at the rate of 40 miles per hour. If the student returns home after 6 hour, what is the distance from his home to the beach?
Answered by Penny Nom. |
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il y a deux contenant |
2007-01-23 |
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From Eric:
il y a deux contenant un de 3 litre et un de 5 litre les deux sont vide comment en les remplisant on peux obtenire 4 litre
Answered by Claude Tardif. |
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Le produit des fractions |
2007-01-23 |
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From Jasmine:
Au mois de mars, le poids de la brebis augmente d'un huitième. Au mois d'avril, son poids augmente d'un neuvième, au mois de juin d'un onzième. Par quelle fraction faut-il multiplier son ancien poids pour obtenir son nouveau poids?
Answered by Claude Tardif. |
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What is the point of intersection of two sides of a polygon? |
2007-01-23 |
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From Tyler:
What is the point of intersection of two sides of a polygon?
Answered by Stephen La Rocque. |
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A lumber yard receives 24 studs in a bundle |
2007-01-23 |
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From Roxanne:
A lumber yard receives 24 studs in a bundle that contains 25 row (or layers) of studs with 20 studs in each row. A 2X4 stus ia actually 1 1/2'' X 3 1/2'' X 92 5/8 Find the cross sectional area of a bindle in square inches Find the volume of the bundle in cubic feet
Answered by Stephen La Rocque. |
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Is -2^2 = -4 or 4? |
2007-01-23 |
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From Joan:
Is -2 squared, when written without parentheses around the -2, -4 or could this correctly be solved by squaring -2 (-2 x -2) for an answer of 4? Or, to correctly get an answer of 4, would the problem have to read (-2) squared?
Answered by Stephen La Rocque. |
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Maximizing profit |
2007-01-23 |
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From Denise:
Total Profit= Total Revenue-Total Cost P(x)=R(x)-C(x) Where x is the number of units sold. Find the maximum profit and the number of units that must be sold in order to get that profit. R(x)=5x C(x)=.001x^2+1.2x+60
Answered by Stephen La Rocque. |
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BEDMAS |
2007-01-23 |
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From Joanne:
getting 2 different answers for 24divided by 4(5-7)
getting -12 or -3 can you please explain the thinking behind each?
Answered by Steve La Rocque, Haley Ess and Penny Nom. |
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