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Similar rectangles |
2013-08-17 |
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Mattie pose la question :
The dimensions of a rectangular-shaped picture frame are 14 inches long and four inches wide. Which dimensions below represent another frame that i geometrically similar>
a. l=49 in. and w=14in.
b. l=7in and w=3in
c. l=21in and w=8in
d. l=24in and w=14in
thanks
Penny Nom lui répond. |
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Equal ordinate and abscissa |
2013-08-15 |
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sonit pose la question :
the slope of tangent to the curve y=(4-x^2)^1/2 at the point, where the ordinate and abscissa are equal, is
Penny Nom lui répond. |
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Two perpendicular lines |
2013-08-15 |
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Hanna pose la question :
The problem says, "Write the equation in standard form for the line that is perpendicular to the graph of y=5x+1 with a y-intercept of 4." I have no clue how to do this. Please help me!
Penny Nom lui répond. |
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Golf for 11 |
2013-08-14 |
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Don pose la question :
2 foursomes and 1 threesome for 6 rounds of golf
Victoria West and Harley Weston lui répond. |
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The volume of a pond |
2013-08-14 |
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Kelly pose la question :
I have a pond that measures 335 feet wide, 385 feet long and 18 feet deep with a 4:1 slope on all four side. How do I figure out how many gallons of water this pond will hold?
Harley Weston lui répond. |
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Using trig to find the height of a hill |
2013-08-14 |
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Anna pose la question :
From the top of a hill, the angles of depression of two successive milestones on a level road, which leads straight away from the hill, are 5degrees and 15degrees respectively. Fine the height of the hill.
Suggestion: BE is drawn perpendicular to AD. Find BE, then BD, finally CD.
Thanks :)
Penny Nom lui répond. |
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A system of equations |
2013-08-13 |
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Nina pose la question :
3x-2y=8
-x+3y=5
What is the solution of the system of equations
Penny Nom lui répond. |
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An equation in slope-intercept form |
2013-08-12 |
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Brittney pose la question :
write an equation in slope-intercept form of the line that is parallel to the grapg of y=-3/4x+6 passes through -8,-5
Penny Nom lui répond. |
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A mixture problem |
2013-08-11 |
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MJ pose la question :
How many liters of pure acetic acid must be mixed with 3 liters of a 30% acetic acid to obtain a mixture of 65%?
Penny Nom lui répond. |
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Consecutive Numbers Question |
2013-08-11 |
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Lucy pose la question :
Hello,
I have a question about consecutive numbers. So lets say a question tells you to find what three consecutive numbers are that add up to a certain number. To calculate this, would you use
2x+1, 2x+3, 2x+5 or just x, x+2, x+4.
Also, the same question for even numbers. Would you use:
2x, 2x+2, 2x+4 or just x, x+2, x+4.
My math book is confusing because it uses the first strategy(the 2x+…) in some situations and the second strategy(x+…) in other situations. Thus, can you provide me an explanation of why you would use the strategy that is correct?
Specifically, my book answered this question: If “n” is the first of five consecutive odd numbers, what is their average, using n,n+2….=5n+20 and average is n+4(this is the answer),.
For the question: the sum of 4 consecutive odd integers must be:
Divisible by 8 but not necessarily 16(this is the answer), it used the strategy 2k+1, 2k+3…=8k+16.
Thank you so much for taking the time to answer my question.
Harley Weston lui répond. |
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If I know only the tax amount, how do I figure out total cost? |
2013-08-11 |
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Patric pose la question :
If I know only the tax amount, how do I figure out total cost?
Penny Nom lui répond. |
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What is the original speed? |
2013-08-10 |
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MJ pose la question :
If a truck increases its average speed by 10 km/h it can cover 60 km at the original speed in the same time that it can cover 80 km at the faster speed. What is the original speed?
Penny Nom lui répond. |
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Differentiate x^x - 2^sinx |
2013-08-09 |
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tarun pose la question :
derivative of x^x - 2^sinx
Penny Nom lui répond. |
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What percent is 50 of 4.5 billion? |
2013-08-08 |
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Bobby pose la question :
What percent is 50 from 4.5 billion?
Penny Nom lui répond. |
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Four equations |
2013-08-08 |
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may pose la question :
HI how to solve this 4 equations?
A+C = 0
-4A+B-8C+D=1
3A+16C-8D=-29
-12A+3B+16D=5
Robert Dawson lui répond. |
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