08/01/16

The rate of a certain country’s exports is given by: ??(??) = ??. ?????? ?? - ??. ???? + ??. ?? billion dollars per year,
The rate of a certain country’s exports is given by: ??(??) = ??. ?????? ?? − ??. ???? + ??. ?? billion dollars per year, and its rate of imports is given by ??(??) = −??. ?????? + ??. ?? billion... more
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07/20/16

the length of a rectangle is 7 inches less than twice its width. if the perimeter of the rectangle is 64 inches, find the dimensions of the rectangle.
I can't seem to get the correct answer . I set it up as x (2x-7)=64, 2x^2-7x-64=0, (2x )(x ). And that's where I am stuck. Please help!
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05/18/16

Indicate the null (H0) and alternative hypothesis (Ha) you would develop for the following problems
Indicate the null (H0) and alternative hypothesis (Ha) you would develop for the following problems (you do not have to solve the problem)a) A certain drug is only 25% effective after a testing... more
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05/11/16

Which set of ordered pairs represents a direct relationship between the x and y values?
A-(0, 0), (1, 2), (2, 4)B-(0, 0), (1, 2), (3, 4)C-(0, 0), (1, 2), (2, 1)D-(0, 0), (1, 2), (3, 9)
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05/09/16

a triangle has an area of 36 sqaure feet. what are its height and base?
the height is 6 feet more than the base 
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05/05/16

Compute the probability of answering 8 or more questions correctly by calculating the probability with a direct sum and by using complements.
I  did most of the work but I need some help on the last few questions! Thank you in advance!   Mrs. Hudson plans to give a 10 question multiple choice exam in which each question has 4 options.... more
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05/05/16

The half-life of radioactive sodium is 15 hours. How long does it take for 77% to decay?
The half-life of radioactive sodium is 15 hours. How long does it take for 77% to decay?
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04/27/16

Write down the gradient and y- intercept of the line y=-3x+4
Write down the gradient and y− intercept of the line y=−3x+4 how do I do it
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04/25/16

Algebra 1 help please?
To become a member of an ice skating rink, you have to pay a $30 membership fee. The cost of admission to the rink is $5 for members and $7 for non-members. After how many visits to the rink is the... more
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04/21/16

Are the equations a direct variation equation? If so, what are the constants of variation?
The equations are 3x=8y-9 and 3y=9x  Thanks 
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04/21/16

What was the score of the dropped grade?
The average of 5 quiz scores is 10. When the lowest grade is dropped and the new average is calculated, it turns out to be 11. What was the score of the dropped grade?
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04/20/16

Assignment help -
To get a better feel for the relationship between y=2^x and its derivative, look at a table of values for y=2^x and dy/dx for x = 0, 1,.....,10   What is meant by table of values?   If x = 1... more
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04/13/16

Would my function be •f(x,y)= (x, y+2)?
I was asked to reflect a triangle over the x axis and I did. Then it asked me to write the function that describes the transformation • f(x,y) • My triangle only reflected 2 up so (y+2) but didn't... more
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04/12/16

Statistics: Given H0: µ = 18 and p-value = 0.070.
Given H0: μ ≥ 18 and p-value = 0.070. Do you reject or do not reject H0 at the 0.05 level of significance?     A.not enough information to decide    B.do not reject H0   C. reject... more
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04/11/16

What are two consecutive odd counting numbers that have a product of 1443?
honors algebra 1
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04/06/16

Write the quantity using sums and differences of simpler logarithmic expressions
Express the answer so that logarithms of products, quotients, and powers do not appear.   ln((square root of 4-x^2) / ((x-1)(x+1)^(3/2))
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03/21/16

Area of a polynomial
if a trapezoids area is a^2 + 2ab +b^2, find its height, h. Use area = 1/2h (a+b). 
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03/16/16

Find a,b belongs to Z such that a*43+b*47= 1
 what is and a and b if ax43 + bx47=1. Please show me the steps I really want to know how to go about a problem like this. I got this wrong on the latest exam and my professor never goes over the... more
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03/13/16

could someone help me solve this?
Multiply or divide as indicated. Be sure to reduce all answers to lowest terms. its like multiplying fractions but just with polynomials please help me   (a2+2a+1)/(a+1) •( a2-1)/(a-1)
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03/13/16

Could someone help assist with math, please?
Multiply or divide as indicated. Be sure to reduce all answers to lowest terms.   This question involves dividing polynomials so there like fractions being divided but are... more
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03/12/16

Standard form
My algebra book doesn't really explain things clearly. It just gives me step by step answers but doesn't explain how they got this or that. In my book it's telling me how to write an equation in... more
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03/12/16

There are 8173 students in a college such that the number of girls is 421 more then the number of boys. How many of each are there?
hi, it's a linear equation problem. 
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03/12/16

A magician has a trapdoorA magician’s stage has a rectangle trapdoor which is (x+ 1/2) by 2x ft. The outside rectangle length is (x+ 16) ft.
A magician’s stage has a rectangle trapdoor which is (x+ 1/2) by 2x ft. The outside rectangle length is (x+ 16) ft. Part A. The total area (in square feet) of the stage can be represented by x2 +... more
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03/09/16

The width of a rectangular patio is 12 feet, and the length of its diagonal is 37 feet. What is the area of the patio to the nearest square foot?
 It has a diagonal length of 37 feet. The width of 12 feet . How do I find the area?
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03/08/16

how do you solve 2sqrt3/6 by hand?
I have two Quantities A and B. Quantity A is 2 radical 3 over 6 Quantity B is 1 over radical 3 using a graphing or scientific calculator I can solve this but I don't know how to do this by... more
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