03/08/14

graph the region described by -4x+5y<20
graph the region -4x+5y<20
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03/08/14

solving systems of equations 5x - 2y = -24
Did I solve these correctly?   1.  5x - 2y = -24          -  4y = -48 - 10x   =   5x - 2y = -24    10x  - 4y = -48   =  5x - 2y = -24 (multiply by -2) =  -10x + 4y = 48   = -10x +4 y =... more
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03/08/14

helping solving system of equations
will you please help me solve the following system of equations.   1.  3x - 2y = 4      2x - 5y = 21     2.  3x + y = 7      3x + y = 10   do not show by elimation, thanks
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03/08/14

word problem
one pump can drain a pool in 12 minutes. When the second pump is also uses, the pool only takes 3 minutes to drain. How long would it take the second pump to drain the pool if it were the only pump... more
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03/08/14

What are the dimensions of the rectangular rug?
The perimeter of a rectangular rug is 32 ft.  The length is 2ft longer than the width.  What are the dimensions of the rug?
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03/07/14

Find magnifications of image
A 60 cm tall red rose is placed 40 cm from a large convex lens of focal length 20 cm.Locate the position of the image by means of a ray diagramLocate the position of the image by means of the... more
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03/07/14

Find the magnification of the image
A candle is placed 15 cm from the vertex of a concave mirror that has a focal length of 10 cm.
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03/07/14

A bacteria culture initially contains 2500 bacteria and doubles every half hour. What is the size of the baterial population after 20 minutes?
Find the size of the baterial population after 20 minutes.
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03/07/14

math help college math homework math 101
you have 220 ft of fencing to enclose a rectangular plot that borders on a river. if you do not fence the side along the river, what is the largest area that can be enclosed?
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03/07/14

What is the greatest possible number of square inches in the combined area of the twenty-five circles? Express your answer in terms of pi.
Twenty-five congruent circles are cut from a 10-inch by 10-inch sheet of paper. What is the greatest possible number of square inches in the combined area of the twenty-five circles? Express your... more
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03/07/14

find the dimension
the area of the page of a book is 40 square inches, the area of the printed part is 21 7/8 square inches. the margin at the top and sides is 3/4 inch wide, the margin at the bottom is 1 inch wide.... more
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03/07/14

how far must it be moved
a piece of cardboard is placed midway between two surfaces of light of equal intensity which are 12 feet apart. its plane is perpendicular to the line joining the two sources. how far must it be... more
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03/07/14

what is the fraction?
if 5 is added to the numerator and to the denominator of a fraction and the result added to the original fraction the sum is 1 3/25. if 5 is subtracted from the numerator and the denominator of the... more
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03/07/14

find the dimension of the page.
the area of the page of a book is 40 square inches, the area of the printed part is 21 7/8 square inches. the margin at the top and sides is 3/4 inch wide, the margin at the bottom is 1 inch wide.... more
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03/06/14

a floor 5 m by 20 m is covered by square tiles of side 20 cm.How many tiles are needed
it is a mensuration maths want ur solution!!!
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03/06/14

solve 3y<6x+4
3y≤6x+4
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03/06/14

Find the limit?
Find the limit of x^2*sin(1/x) as x approaches infinity.   Answer: ∞   Please show all your work. Thanks.
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03/06/14

since and after "year"
Example: Plot the data in your calculator, where x represents the number of years "since" 2004.                Plot the data in your calculator, where x represents the number of years "after"... more
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03/06/14

I neednhelp with this...
Find the half-lives of the substances 1) einsteinium-253, which decays at a rate of 3.406% per day ----------------------------------------------------------------------------- 2) You place $800... more
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03/06/14

These logarithms and exponential models are a bit confusing.. could you please help me fihure these out so i knos how to do the rest ? thank you :)
Give the starting value a, the growth rate r, and the continuous growth rate k. 1) Q=5*2t/8 2) Q=40e(t-5)/12 3) Q=2-(t-5)/3
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03/06/14

Hello. I am not certain I am doing this correctly as I am not getting a definite answer. I need some help please! It's a Solution to inequalities problem.
Find the solution to the system: y > or equal to x2 - 8x + 12 and y + 2x < or equal to 18.   Thanks!
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03/06/14

From the patttern find X and explain: -3, 12, -36, X
I Can Not Fig It Out 
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03/05/14

1/2 Log r + 1/3 log s - 1/4 log t
I don't understand the question at all...
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03/05/14

Word Problem, Investnig
A worker invested $24,000 in two accounts, one yielding 4% interest and the other yielding 12%. If he received a total of $1520 in interest at the end of the year, how much did he invest at 4%?
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03/05/14

Variation equation
explain inverse and direct variation
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