01/20/16

needs 60 liters of a 40% acid solution currently has a 20% solutionand 50% solution how mny litrs of each does need to make the 60 litrs of 40% solution
algebra 1 
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01/18/16

3 numbers form an arithmetic sequence with a common difference of 11. If the first number....
           Three numbers form an arithmetic sequence with a common difference of 11. If the first number is decreased by 6, the second number is decreased by 1 and the third number is doubled,... more
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01/13/16

describe and correct the error
t^2-5t=7 discriminant = (-5)^2-4(1)(7)=25-28=-3 discriminant is negative, so there are no real solutions.
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01/13/16

I pay 600 dollars per month for rent if I stay renting here for one year how much rent would I be paying for the whole year
If I pay 600 dollars a month for rent and I stay renting here for a full year how much rent would total for a whole year.
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01/12/16

is -4 over 3 is perpendicular or not
I don't know who's this gonna work. I mean i am so confuse so can you just tell me that question answere.
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01/11/16

The perimeter of the Jacobs square backyard is no more than 72 meters.what is the solution set for the length that his backyard can be?
What's the variable? What's the inequality ? whats the solution? how do I graph this?
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01/11/16

Simplify each expression
3/x-1 + 5/x+1
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01/07/16

Math problem
How much interest is earned in 5 years on a $1400 investment, if it is invested in an account which pay 4.8% and compounds interest continuously.   I believe I use the equation A=Pe ^rt  but i... more
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01/07/16

which equation has both points?
In the xy−coordinate plane shown below, point P has coordinates (8, −6). Which of the following is an equation of the line that contains points O and P? y=-x+4 y=4 over 3*x y=x-4 y=-3over4*x
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01/06/16

How many eggs did he have when he began his deliveries?
 A farmer has to make eight stops and delivering eggs. He begins with exactly the number of eggs he needs for these eight deliveries. At the first stop he delivers half of the eggs he has +1/2 of... more
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01/06/16

Finding the Parametric Equation of a line
Find the parametric equation of the line which contains the point ( 1/2, 0, −3) andis parallel to the vector 2i − 4j + k. Also, find another point on this line which isdifferent from ( 1/2, 0, −3).
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01/05/16

The question is in the description.
A supplier sells 2 1/4 pounds of mulch for every 1 1/3 pounds of gravel. The supplier sends 172 pounds of mulch and gravel combined. How many pounds of each item does the supplier sell?
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01/03/16

Show that the plane ax+by+cz=d contains the points (1,1,1) and (1 /2 ,1/ 2 ,-1) whenever both these equations hold:a+b-4 /3 d=0, c + 1/ 3 d=0
Linear Algebra, we have covered normal vectors, dot products and the like but I still cant figure this out, any help would be appreciated.
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12/31/15

PLEASE HELP
How many ordered pairs of positive integers (x,y) satisfy the equation x=4-x/y2 -x?   Pls help Thanks so much<3  
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12/11/15

In the equation y=8x what is the constant variation
i don't understand it please help me 
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12/09/15

For the following, graph the total revenue function, the total cost function, derrive the profit function, and graph the profit function.
For the following, graph the total revenue function, the total cost function, derrive the profit function, and graph the profit function. Then evaluate the amount of profit/loss the firm makes at... more
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12/09/15

One number is 3 away from the second number. Four times the first number is 14 more than 6 times the second number
4x=14+6y. I need to know how to find the answer for the first and the second number. 
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12/08/15

lent this sum to alka at the same rate for two years coterest but paid Rs100 as simple interest.Find the sum and rate of interest.
Find this answer please......
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12/07/15

in 28% to pay income tax and made an extra $12,000 how much money in taxes do i owe?
if i am in the 28 percentile to pay income tax and i made an extra $12,000 how much money in taxes do i owe on this extra 12,000?
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12/07/15

Daniel is 2 times as old as Kevin. 15 years ago, Daniel was 5 times as old as Kevin. How old is Kevin now?
It is an "Age" word problem
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12/07/15

Help! I know how to find the temperature if a variable is given, but not how to find the maximum temperature
Quadratic Polynomial of Best Fit: y = ?0.3476t2 + 10.948t ? 6.0778 where t = Time of day (hour) and y = Temperature (in degrees)REMARKS: The times are the hours since midnight. For instance, 7... more
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12/07/15

For the function y = -(x + 4)^2 - 5, the vertex is:
For the function y = -(x + 4)^2 - 5, the vertex is: [Write your answer as a point, (x,y), with no spaces.]
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12/07/15

If a person is selected at random from the group, find the probability that the person is a professor or is a male.
the mathematics department of a college has 8 male professors, 12 female professors,14 male teaching assistants, and 10 female teaching assistants. If a person is selected at random from the group,... more
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12/07/15

I need help! For the function y = -(x + 4)^2 - 5, the vertex is
[Write your answer as a point, (x,y), with no spaces.]
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12/06/15

What is the domain and range (interval notation) for x^3-3x^2+4?
I need help figuring this out. I'm working on a project for math and unfortunately I don't have the best teacher. I think its negative infinity to positive infinity, but I'm not sure. 
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