Here are the newest items added to Quandaries & Queries:
start over

		Page 135/886

	Similar rectangles		2013-08-17
		From Mattie: 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 Answered by Penny Nom.
	Equal ordinate and abscissa		2013-08-15
		From sonit: the slope of tangent to the curve y=(4-x^2)^1/2 at the point, where the ordinate and abscissa are equal, is Answered by Penny Nom.
	Two perpendicular lines		2013-08-15
		From Hanna: 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! Answered by Penny Nom.
	Golf for 11		2013-08-14
		From Don: 2 foursomes and 1 threesome for 6 rounds of golf Answered by Victoria West and Harley Weston.
	The volume of a pond		2013-08-14
		From Kelly: 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? Answered by Harley Weston.
	Using trig to find the height of a hill		2013-08-14
		From Anna: 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 :) Answered by Penny Nom.
	A system of equations		2013-08-13
		From Nina: 3x-2y=8 -x+3y=5 What is the solution of the system of equations Answered by Penny Nom.
	An equation in slope-intercept form		2013-08-12
		From Brittney: 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 Answered by Penny Nom.
	A mixture problem		2013-08-11
		From MJ: How many liters of pure acetic acid must be mixed with 3 liters of a 30% acetic acid to obtain a mixture of 65%? Answered by Penny Nom.
	Consecutive Numbers Question		2013-08-11
		From Lucy: 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. Answered by Harley Weston.
	If I know only the tax amount, how do I figure out total cost?		2013-08-11
		From Patric: If I know only the tax amount, how do I figure out total cost? Answered by Penny Nom.
	What is the original speed?		2013-08-10
		From MJ: 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? Answered by Penny Nom.
	Differentiate x^x - 2^sinx		2013-08-09
		From tarun: derivative of x^x - 2^sinx Answered by Penny Nom.
	What percent is 50 of 4.5 billion?		2013-08-08
		From Bobby: What percent is 50 from 4.5 billion? Answered by Penny Nom.
	Four equations		2013-08-08
		From may: HI how to solve this 4 equations? A+C = 0 -4A+B-8C+D=1 3A+16C-8D=-29 -12A+3B+16D=5 Answered by Robert Dawson.

		Page 135/886