12/16/13

show a total area, determine a domain of a function, and graph the area
A page that is x inches wide and y inches high contains 30 square inches of print. The margins at the top and bottom are 2 inches and the margins on the side are 1 inch.    a) show that the total... more
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12/16/13

3 x 2^x+3 = 192 x 3^x-3
How to solve and simplify this? 
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12/16/13

2x^3+5x^2+4=(x+3)Q(x)+R
find the polynomial Q(x) and the constant R
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12/15/13

I need to check my answer for this practice problem.
Select the approximate values of x that are solutions to f(x) = 0, where f(x)=-8x^2 +9x+5.A. (-1.60,1.80)B. (-8,9)C. (-1.13,-0.63)D. (-0.41,1.53)   I believe the answer is A. My math partner... more
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12/15/13

Find the value of a and b if (a-2)+3bi=7+6i
This is for my math analysis class, and I can't quite figure out how to do it!
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12/15/13

The scores on a psychology exam were normally distributed with a mean of 67 and a standard deviation of 8.
If 500 students took the exam, approximately how many students scored below 75  
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12/15/13

I can not seem to grasp this quadratic formula
Select the values of x that are solutions to the inequality 0>x^2 +5x-2   A. xΕ(-5-√33⁄2,-5+√33⁄2) B. xΕ[5-√33⁄2,-5+√33/2] C. xE(-∞,-5-√33/2)∪(-5+√33/2,∞) D. xE(-∞,-5-√33/2]∪[-5+√33/2,∞)
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12/15/13

Find the sum of the ages of 4 the men
This is the complete problem: There are 4 men in a car. Find the sum of the ages of 4 the men if their ages in all possible pairs are given as : 96, 79, 84, 95, 100, 83.
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12/15/13

Quadratic Formula
Select the approximate values for x that are solutions to f(x)=0, where f(x)=-6x^2 +7x+8   A. (-0.71,1.88) B. (-6,7) C. (-1.17,-1.33) D. (-0.75,0.88)
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12/15/13

quadratic formula
Select the approximate values of x that are solutions to f(x) = 0, where f(x)=-8x^2 +9x+5.   A. (-1.60,1.80) B. (-8,9) C. (-1.13,-0.63) D. (-0.41,1.53)
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12/15/13

rational expressions g^2-6g-55 / gk^3 +k / k^2 + k-42
need to find the domain for both expressions   g^2 - 6g-55 divided by g   k^3 + k divided by K^2 + k - 42    
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12/14/13

Find the y-intercept?
Find the y-intercept of the tangent line to the curve y=sqrt(x^2+33).   The answer is 33/7.
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12/14/13

find using carbon
A mummy discovered in Egypt has lost 46% of its carbon-14. Determine its age
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12/13/13

when do you use arbitrary in describing domain and range of a graph or a table?
my teacher said that in a question I was supposed to graph with any real number and then give the domain and range of that equation I wrote domain: >x> or domain: (,,,,)  he said that the... more
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12/12/13

Verify the identity 1/tan(theta)csc(theta) = cos(theta)
This is for my trig class, and the directions say to verify the identity. Thanks so much.
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12/12/13

How would you find sinx=.3
I dont get how to do this, the problme is  sinx=.3 you have to take the inverse of n.3 and you get .305 (round) but the i dont know where to go from there, you need 2 solutions and .305 is the... more
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12/12/13

let A,B,C and D be the four rational zeros of the function defined by p(x)= 3x^4-8x^3-11x^2+28x-12 Compute (1+A)(1+B)(1+C)(1+D)
problem of the week final answer must be in the form of (1+A) (1+B) (1+C) (1+D) using the function p(x)= 3x^4-8x^3-11x^2+28x-12
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12/12/13

rational zeros for f(x)=x^4-4x^3+x^2+16x-20
i dont understand what rational zeros are.  
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12/12/13

what is a triangle proportionality
don't understand the difference between triangle proportionality and midsegment. can you please explain to me in a better way than the inturnet does :)
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12/11/13

find the ph?
. For each substance, find the pH from the given hydronium ion concentration. (a) coffee, 1.26×?10?^(-5)(b) milk, 2.51×?10?^(-7)(c) lutefisk, 5.01×?10?^(-12)
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12/11/13

Q2 POW #3 -Trig Identities
1) given the double angle identity for cosine: cos2θ=cos2θ-sin2θ      Prove: cos3θ = cos3θ - 3cosθsin2θ         and: cos4θ = cos4θ - 6cos2θsin2θ + sin2θ 2) Continue this process, finding an... more
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12/11/13

How do you write an equation in vertex form and standard form if you know the coordinates of the x intercepts as well as the y intercept?
The coordinates of the x-intercepts given are (-1,0) and (3,0). The y-intercept is 2.5. How do you create an equation in standard and vertex form with that info?   I'm not sure what each letter... more
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12/11/13

math problem
Billy has 1 gallon of paint. He is going to pour it into a paint tray that measures 10 inches wide, 14 inches long, and 4 cm deep.(1 gallon = 231 in3, 1 inch = 2.54 cm)Which of the following... more
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12/10/13

If the LCM of two numbers is equal to the product of the two numbers, what must be true about their common factor?
Help!!!            
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12/10/13

Word Problem
The cost to produce one laptop computer is 890.00 plus a one time fixed cost of 100,000.00 for research and development. Each laptop computer will be sold for 1520.00.   A. Write a formula that... more
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