07/30/15

Determine the domain and range of the following relations using set builder notation.
I am just beginning to learn the whole concept of set builder notation, and I am running into a little confusion. I understand the x and y axis, as well as the form it is written in. I don't... more
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07/30/15

if david's brother is 3 years older than sam, and the sum of their ages is 17, how old is david?
translate and solve this word prblem
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07/30/15

The surface area of a cube is 78a^2. What is the volume of the cube?
I dont understand how to do this.
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07/30/15

7/11 x + 21 = -889
I was thinking I subtract 21 from both sides of the equation. Then I have to deal with the fraction. I use 11/7 as the reciprocal. When I went to check the answer on the calculator, I got a huge... more
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07/30/15

Two angry children 380 feet apart are headed straight towards each other—one at 15 feet per second and the other at 10 feet per second. when will they collide?
I need to find out the time it will take for the kids to collide. I do not understand the formula used to solve this problem.
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07/30/15

algebra problem
if (a,15) is a point on the graph of y=x^2-2x what is a?
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07/30/15

mean of a list 7 numbers is 45. If i add 2 numbers to the list, the mean of the list becomes 37. what is the mean of the two numbers that I added to the list.
use a number line  
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07/30/15

The logistic growth model shown below represents the number of families that own a home in a certain small (but growing) city t years after 1990. a) What is th
The logistic growth model shown below represents the number of families that own a home in a certain small (but growing) city t years after 1990. a) What is the maximum number of families that will... more
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07/29/15

how do I solve this math word problem
Drug concentration. The concentration C of a certain drug in a patient’s bloodstream hour after injection is given by C (t) = t/2t^2 +1 Find the horizontal asymptote (t). What happens to the... more
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07/29/15

How do I solve 2/3x = 17/16
I have several problem of this type where there are fractions with unknown values. I do not know where to begin.
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07/29/15

College algebra
In 1997, 0.309 million DVD players were sold. In 2006, the sales reached 20.037 million  Find the average rate of change in sales, in millions, per year. round answer to nearest hundredth. 
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07/29/15

The mean of a list of 7 numbers is 45. If I add 2 numbers to the list, the mean of the list be comes 37. What is the mean of the two numbers that I added to the
This is can be solved using a number line.
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07/29/15

Factoring trinomials in the form x^2 + bx + c.
Explain why px + qx = (p + q)x.  I understand how to apply this when factoring, but i don't really understand why the x is not added when the p and q aren't added.   Explain why the expression... more
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07/29/15

Identify the restrictions on the variable...
  a. x≠-2 and x≠6 b. x≠0 c. x≠-2 d. x≠-1 and x≠-2
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07/28/15

Which point is not within the graph?
on a piece of graph paper, graph the following line: |x|>5
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07/27/15

HELP MATH IM CONFUSED
you have a right triangle the measure of d is _?º to the nearest tenth of a degree if tanD is .2735   its realign confusing
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07/27/15

In One Week, 5/8 of your mail is advertisements and 1/5 is letters from friends. What is the least number of pieces of mail you receive?
I Need Help Please Can You Give Me The Answer To This Question! I Think The Answer Is A Fraction. I Have No Clue Please I Need The Answer
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07/27/15

Jon and tony start from grays lake at the same time and walk 20 miles. Jon walks twice as fast as tony and arrives 4 hours before tony. How fast did each walk
Word prolems
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07/27/15

Suppose that 8 percent of teachers at a university attended a conference.
Suppose that 8 percent of teachers at a university attended a conference. If 7000 teachers are enrolled at the university, about how many teachers attended the conference?
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07/26/15

Airplane flies due west 120 miles and then 240 miles in direction 190 degrees. Assuming the earth is flat, how far is the plane from the airport at this time?
Solve the word problem
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07/26/15

Does the expression for length = 7x^3 - 11x^2 ??
The width w of a rectangular swimming pool is 7x^2. The area A of the pool is 7x^3 – 42x^2. What is an expression for the length of the pool?    Does the expression for length = 7x^3 - 11x^2 ??  
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07/26/15

The variable Z is inversely proportional to X. When X is 12, Z has the value 1.5833333333333. What is the value of Z when X = 18 Round to at least the thousan
The variable Z is inversely proportional to X. When X is 12, Z has the value 1.5833333333333. What is the value of Z when X = 18, Round to at least the thousand.     The variable Z is inversely... more
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07/26/15

how many liters of Petrolyn oil will be made?
Petrolyn motor oil is a combination of natural oil and synthetic oil. It contains 4 liters of natural oil for every 3 liters of synthetic oil. If 243 liters of natural oil are used, how many liters... more
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07/25/15

circles topic
ABC is a triangle which is inscribed in a circle with a radius 7 units and if AB is the longest chord of the circle then which of the following could be the area of triangle... more
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07/24/15

finding the smaller integer
if three times the smaller of the two consecutive integers is added to four times the lager the results is137 find the smaller integer
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