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At what speeds were they travelling? |
2007-01-16 |
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Maria pose la question :
Kim and Julie are joining Nicole at her parents cottage for the weekend. The cottage is 150km away from their neighbourhood. Kim can leave directly after school but Julie will be leaving after band practice, an hour and a quarter later. Kim took her time and drove slowly, averaging 20km/h slower than Julie. They both arrived at the same time.
At what speeds were they travelling?
Stephen La Rocque lui répond. |
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How much lemon oil do you need to make 10.15L of polish? |
2007-01-16 |
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Sajad pose la question :
to make an environmentally safe furniture polish, you can combine lemon oil and mineral oil in the ratio 3:200, by volume. How much lemon oil do you need to make 10.15L of polish?
Penny Nom lui répond. |
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Percentage markup |
2007-01-16 |
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Lauren pose la question :
MY DAD IS TRYING TO SELL PRODUCTS AT A 40% MARKUP. LET'S SAY THE COST IS $55.00. SHOULDN'T YOU JUST DO, 55 X 1.4 = 77 , SO THE $77 IS THE 40% MARKUP?? HE'S SAYING THAT YOU TAKE 55 / 60% = 91.67 . SO WHO'S FORMULA SHOWS YOU A TRUE 40% MARKUP OF $55.00 DOLLARS??????
Penny Nom lui répond. |
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Show that 3k+2 and 5k+3 are relatively prime |
2007-01-15 |
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Andrea pose la question :
show that if k is a positive integer, then 3k+2 and 5k+3 are relatively prime
Penny Nom lui répond. |
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Probability and Lisa's rings |
2007-01-15 |
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Spencer pose la question :
lisa has 9 rings in her jewelry box. five are gold and 4 are silver. if she randomly select 3 rings to wear to a party, find each probability p(2 silver or 2 gold)
Stephen La Rocque lui répond. |
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Standard deviation |
2007-01-15 |
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Kayleigh pose la question :
After i have added up all the squared deviations what do i do???, what is meant by "divide by one less than the sample size"
Stephen La Rocque lui répond. |
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A line through the point (4, 7) and parallel to the line y=2 |
2007-01-14 |
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Chasity pose la question :
i am suppose to write an equation of a line through the point (4, 7) and parallel to the line y=2. please help me
Penny Nom lui répond. |
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An arc, a cord and the radius of a circle |
2007-01-14 |
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Kevin pose la question :
I have the length of the cord and the distance from the cord to the arc, is it possible to find the radius with just these parameters?
Penny Nom lui répond. |
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The height of a triangle |
2007-01-14 |
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Shanelle pose la question :
I'm trying to find the height of a triangle but i only know the base and one of the sides as well as the angle between those two sides...but how can i find the height?
Penny Nom lui répond. |
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A line perpendicular to another line |
2007-01-13 |
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Dusty pose la question :
Find an equation for the line perpendicular to: 3x - 4y + 1 = 0 passing through (4,7)
Leeanne Boehm and Penny Nom lui répond. |
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Calculating "yards" |
2007-01-13 |
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Donny pose la question :
I want to learn how to figure out how many tons and yard are needed to do driveways and parking lots. OK from what I've read on the net i think its length width=square feet . i think i get that but i can figure out how to do the height . i understand a 6in would be 0.5 but how bout if its 2ins or 4 in . how do I put the the fraction in to working form.
Penny Nom lui répond. |
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An octagonal bird house |
2007-01-13 |
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Soren pose la question :
I'm in the process of building a birdhouse that is an octagon (based on previous questions, looks like that's a familiar tune). The essential elements are known, but I get stuck when trying to determine the angle for the cuts that would be made to the thickness of the wood so that they all fit together when assembled. Each octagonal section is 7 inches in width and the peak of the roof will be 2 inches higher than the sides. My sense is that the angle cuts that need to be made to the 'height' of each piece of wood. By height I mean the thinnest part of the wood that is neither the length nor the width to use colloquial terms. While it's clear that a slight angle is needed, it would seem that the angle would necessarily change as the distance from the top of any one side to the peak changes. Please advise if more clarification is needed. The 2 inches is random and can be changed if more convenient. Whew!
Harley Weston lui répond. |
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What is his rate of walking for the entire trip? |
2007-01-12 |
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Garmani pose la question :
A man walks 500 feet at 4 miles per hour and returns to the starting point at 3 miles per hour. What is his rate of walking for the entire trip?
Stephen La Rocque lui répond. |
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How many sq. ft. does she own? |
2007-01-12 |
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Wayne pose la question :
I own 71/72 of 40 acres. My sister owns 1/72 of the same 40 acres. How many sq. ft. does she own?
Stephen La Rocque lui répond. |
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Throwing a stone downwards |
2007-01-12 |
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Momo pose la question :
a stone is thrown vertically downward with an initial speed of 14m/s from a height of 65 m above the ground. A) how far does the stone travel in the first 2.0 s? B) what is the stone velocity just before it hits the ground?
Stephen La Rocque lui répond. |
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