08/12/14

Julio is 36 years old and James is 11 years old. In how many years will Julio's age be twice James age?
I just watched someone solve this problem and I don't understand how this person got the answer that she got.
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08/10/14

find the slope of ther line on a graph is (3,-1) and (1,1)?
Please show me how to complete the question-find the slope of the line on a graph of (3,-1) and (1,1)?   please show me work so I will have a better understanding.   Thank you, Joshua
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08/10/14

Solve the system by the substitution method. y = x + 4 and y^2 = 16x
how would one solve this particular problem by substitution? y = x+4                                                                                         y^2 = 16x
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08/10/14

Find the area of the region bounded by f(y)=y(2-y) and g(y)=-y
I completed this problem I just want to check my final answer. I got 27/6 and simplified it to 9/2 as my final answer 
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08/10/14

Find the area of the region bounded by y=-x^3+3, y=x, x=-1 and x=1
Find the area of the region bounded by y=-x^3+3, y=x, x=-1 and x=1
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08/10/14

find the particular solution of the differential equation f"(x)=6(x-1)
find the particular solution of the differential equation f"(x)=6(x-1) whose graph passes through the point (2,1) and is tangent to the line 3x-y-=0 at that point
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08/10/14

Trying to understand SATISFIABILITY
I am not a mathematics student but am trying to understand SATISFIABILITY as part of a project i am working on.As i Understand it, basic SAT has the equation; x or not x. True or False, Yes or... more
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08/10/14

maths help
Find an equation for an ellipse with foci (3,4) and (3,6) and vertices (3,1) and (3,9). _________ = 1                             thanks!!
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08/09/14

A sailboat is being pulled toward a boat dock with a rope and pulley.
The pulley is 5ft above the height at which the rope is attached to the boat. If R(t) represents the length of the rope between the boat and the pulley, determine the value of R'(t) at the moment... more
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08/09/14

what geographic features might be desireable to settlers? why
geographic features that might influence settlement
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08/09/14

maths help
if x belongs R then x^2+2x+a/x^2+4x+3a can have all real values if?
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08/09/14

maths help
If a and b (not equal zero) are the roots of the equation x^2+ax+b=0, then find least value of x^2+ax+b (x belongs R)
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08/09/14

maths help
condition for a quadratic equation to have one positive and 1 negative root is
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08/09/14

Part A: if Y and X salary ratio = ¾ Part B: if Y and Z salary ratio = 2/3 And total of salary = 1800$ The salary of everyone is =?
Part A: if Y and X salary ratio = ¾ Part B: if Y and Z salary ratio = 2/3 And total of salary = 1800$ The salary of everyone is =?
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08/09/14

what is the speed of a plane traveling 365 km/hr that has a tailwind of 40 km/hr?
what is the speed of a plane that is traveling 365 km/hr that has a tail wind of 40 km/hr?
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08/09/14

what is the value of sec15°=?? & how it came
Sec15°=??
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08/08/14

Rational roots
Given the equation x^3-2x^2+x-3=0, what are the possible rational roots?   I determined the possible roots were -1, 1, -3, and 3.   However, when I tried synthetic substitution to check the... more
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08/07/14

solve equations on the interval
Solve each equation on the interval 0<Θ<2pi   a) 1-sin(Θ)=1/2 b) 2sin^2(Θ)-1=0 c) tan2(Θ) =-1 d) cos3(Θ)=1
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08/06/14

power series
 Determine the interval and radius of convergenxe for the power series the summation of x4n (4n)! 
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08/05/14

If I had a 18 cubic foot fridge and I purchased a 30 cubic foot fridge how much more percent storage space do I have?
Our original fridge was a 18 cubic foot. We now have a 30 cubic foot fridge.  The additional cubic storage space is 12. My wife is wondering what our additional percentage of storage space we have.... more
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08/04/14

find all possible values for t in the interval 0=t=2p . If there is more than one answer, enter your solutions in a comma separated list.
find all possible values for t in the interval 0≤t≤2pi If there is more than one answer, enter your solutions as a comma seperated list. 1)sin(t)=1/2 when t=            (I know one answer is pi/6,... more
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08/02/14

Select the approximate values of x that are solutions to f(x) = 0, where f(x) = -5x2 + 5x + 9
A: {1.93, –0.93} B: {-5, 5} C: {–1.00, –1.80} D: {–0.56, 0.56}
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08/02/14

Calculate the fewest circles of 2r that will cover all the points marked out in a rectangle greater than 2r x 2r in size
I have a rectangle of lined graph paper of 1mm squares. The rectangle is greater than 2r in height and width. Within the rectangle I randomly mark three or more points that are no further than 2r... more
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08/01/14

Probability question
Hi, I have a question on probability that I don't know how to approach:   Box A contains 10 cards numbered 1 through 10, and box B contains 5 cards numbered 1 through 5. A box is selected at... more
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07/31/14

use sigma notation to write the sum 9/(i+1)+9/(i+2)+9/(i+3)+....+9/(i+14)
use sigma notation to write the sum 9/(i+1)+9/(i+2)+9/(i+3)+....+9/(i+14)
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