03/16/17

Story problem Algebra 1
write an equation of the form (x^2) +bx +c =0 that has the solutions x=-3 and x=8. Explain how you found your answer 
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03/16/17

Left on together, the cold and hot water faucets of a certain bathtub take 7 minutes to fill the tub. If it takes the cold water faucet 17 minutes to fill t
Thanks for your help , please do not round 
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03/16/17

Find the values of k for which the quadratic equation 2x^2+5x+k=0 has no real roots.
quadratic equations
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03/15/17

In triangle PQR PQ is 12, PR is 10 and measure of angle P is 60. Find the exact value of the area
 iTS A SPECIAL TRIANGLE QUESTION.
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03/15/17

Differential Equations
The auxiliary equation for the given differential equation has complex roots. Find a general solution.   1. y''+y=0   2. u''+7u=0   Solve the given initial value problem. 3.... more
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03/15/17

f(x)=√5-3x
How do I find the domain?
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03/15/17

algebra 2 high school
solve √6f+39=9
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03/15/17

evaluate the geometric series when ...
a1=4, an=1024, r = -2
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03/14/17

implicit derivative after multiplying by x
implicit derivative of y/x=10 is y'=y/x. but implicit derivative of y=10x (multiply both sides by x first) is simply y'=10. What is the difference?
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03/14/17

The scale on a map is 1/4 inch to 6 miles. Find the actual distance between two towns for which the distance is represented by 32 inches on the map
The scale on a map is 1/4 inch to 6 miles. Find the actual distance between two towns for which the distance is represented by 32 inches on the map  
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03/14/17

Natural numbers
The numbers 840 and 876 are divisible by 6. Without actual division can you show the  1716 is also divisible by 6?
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03/14/17

A bag contains 4 red marbles and 7 black marbles.
Two marbles are randomly picked from the bag, one a time. Find the probability that the two will be black marbles.
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03/13/17

Differential Equations
3. Solve the following differential equation:y″+9y=0; y=3, y′=3 at x=Π/3   I've never seen a situation with, "y′=3 at x=Π/3"
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03/11/17

If the radius of a circle is increased by 3, the circumference is increased by
When I solved this I got 6. One of the other choices was 6pi but I'm not sure. If the answer is one of those or something completely different please let me know 
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03/11/17

The radius of a wheel is 18 inches. Find th number of feet covered by this wheel in 20 revolutions.
I'm very confused. If someone could help me that would be great. Thanks!
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03/11/17

If x+y=-6andxy=9sox^2+y^2
If x+y=-6 and xy=9 then x^2+y^2=? ......................... Thank you.  
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03/10/17

determine the local linearization near x=0
Determine the local linearization of (1+x)k near x=0. Use the linearization to estimat the square root of 1.32.   The steps I think I should take are fnd the y vale for the function, find the... more
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03/09/17

How to find the equation of the circle using the tangent or derivative.
Find the equation of the tangent line to the curve y = x2 at x = 1. so I found this to be y=2x-1   the part I need help with is the circle equation:   b) This line is also tangent to a circle... more
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03/08/17

If the diagonals of a rhombus are represented by 4x and 6x, the area may be represented by?
im very confused. If someone could help me that would be great. thanks!
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03/07/17

write the following product as a sum or difference?: sin3(theta)sin(theta)
I am aware I have to use the sum and difference identity, and it is sin(u+v)=sinucosv+cosusinv, but I am just a bit lost as to how the (3) would be interpreted in this equation. Any help is... more
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03/07/17

Can you answer this question with work
Find the 6th term in the expansion of (X+2y)^17
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03/06/17

How do you simplify this equation?
(a^-2b)^-3(ab^-7)  
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03/06/17

The current in a stream moves at a speed of 6mph. A boat travels 19mi upstream and 19mi downstream in a total time of 3hr.
what is the speed of the boat in still water?     I can not figure out the answer after I get It in the quadratic form. help please
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03/06/17

Find the slope of the tangent to the curve y^2=((x^2)/(xy-28)) at (8,4)
the problem is stated as above. I'm just not sure where to start. 
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03/06/17

If the point (-1,2) is the midpoint of the line segment with end points that are (a,-4) and (-7,b) then what are the respective values of a and b?
find values of a and b 
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