04/08/15

Math problem
Use the Laws of Logarithms to combine the expression: log2(A)+log2(B)-2log2(C)
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04/08/15

Graphing & standard equation
The general form of the equation of an ellipse is (9x^2) + (4y^2) + 54x - 8y + 49=0. Write the equation of this ellipse in standard form and give the coordinates of the center, the length of the... more
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04/08/15

FInd C and the slope
Consider the function f(x) = 4 -8 x^2 on the interval [ -6 , 4 ]. Find the average or mean slope of the function on this interval, i.e.f(4)- f(-6)/4-(-6)     By the Mean Value Theorem, we know... more
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04/07/15

integrate 4x/x^2 = 1 dx
∫4x/x2+1 dx
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04/07/15

x=10/y, 2y+3x=16
x=10/y and 2y+3x=16
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04/07/15

I need an explanation on how to do this kind of problem, because I'm horrible at math.
Translate the problem into a mathematical sentence, using p as your variable name. Do not include spaces in your answer.Chrissy went to the grocery store Thursday night and spent $22.54. She paid... more
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04/07/15

true or false: if lim x?0 f(x) = 5 then f(0) = 5
a true and false question referring to limits
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04/07/15

please help me solve this problem by completing the the square
can you help me solve this by completing the square! 3x^2-5x-1/4=0
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04/06/15

two numbers are in the ratio 2:5. if 6 is subtracted from the sun, the result is 50. what is the larger number?
I forget how to solve a ratio problem 
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04/06/15

Find a polynomial function of degree 2 whose x-intercepts are -1 and 5 and whose range is (-infinity,9].
I need to know what the polynomial is and the vertex of the polynomial is.
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04/06/15

What is the 8th term of the geometric sequence -1, 4, -16, ...?
What is the 8th term of the geometric sequence -1, 4, -16, ...?Choose one answer. A. 16,384 B. -4,096 C. 4,096 D. -16,384
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04/06/15

What is the probability of getting exactly 4 correct answers?
a multiple-choice test in which each question has 4 choices only one of which is correct. Assume that 7 questions are answered by guessing randomly.What is the probability of getting exactly 4... more
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04/06/15

What is the probability of at least 6 correct answers?
Assume that 8 questions are answered by guessing.What is the probability of at least 6 correct answers?
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04/06/15

word problem
A river is flowing downstream at a rate of 1 km/h. In still water Michael can swim at a rate of 2 km/h. Michael dives into the river and swims downstream then turns around and swims back to the... more
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04/05/15

the boundaries of the shaded region are the y-axis the line y=1 and the curve y=x^1/4.
Find the area of the region by writing x as a function of y and integrating with respect to y and integrating with respect to x
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04/05/15

Write the standard form of the eqation of the line through the pair of points (-4,2) and (-6,8)
Write the equation using only integer coefficients
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04/05/15

Word problem
the back of tons property is a creek. Time would like to enclose a rectangular area, usuing the creek as one side and fencing for the other three sides, to create a corral. If there is 860 feet of... more
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04/04/15

2(v+40)800+2(v-40)800=9(v+40)(v-40) solve using quadratics formula
i need to solve this. The answer is v=360 or -4.44 repeating. I just do not know how to get there.   The original equation was 800 over v-40 + 800 over v+40 = 9 over 2   The original problem... more
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04/04/15

solve exponential equation..
solve the exponential equation   10-x = 56x
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04/04/15

stamp word question
a collection of stamps consists of 3 cents stamps, 7 cents stamps, and 12 cents stamps. The number of 3 cents stamps is five less than the number of 7 cents stamps. The number of 12 cents stamps is... more
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04/04/15

An isosceles right triangle has legs measuring (x – 2) cm each. The hypotenuse has measure (x + 4) cm. Find x.
An isosceles right triangle has legs measuring (x – 2) cm each. The hypotenuse has measure (x + 4) cm. Find x.
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04/04/15

What are the approximate values of x that are solutions to f(x)=0, where f(x)=-8x^2+4x+5
What are the approximate values of x that are solutions to     f(x)=0, where f(x)=-8x^2+4x+5
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04/04/15

The length of a rectangle is 5 ft less than twice the width, and the area of the rectangle is 52 ft2 . Find the dimensions of the rectangle.
The length of a rectangle is 5 ft less than twice the width, and the area of the rectangle is 52 ft2. Find the dimensions of the rectangle.
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04/04/15

word problem
four children A,B,C and D divide a bag of sweets. A takes 1/3 of them, B 2/5th of the remainder and the rest is equally shared between C and D. What fraction of sweets did C or D get ?   how to... more
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04/03/15

find the maximum revenue.
The revenue function for a bicycle shop is given by R(x)=x•p(x) dollars where x is the number of units sold and p(x)=500 -0.5x is the unit price. find the maximum revenue. 
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