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1. ### Need help with this math problem! Let E and F be events with P(E)=.25, P(F)=.31 and P(E∪F)=.64. Find P(F/E).?

You did it correctly, but your numbers don't add up since PE + PF < P(EuF) How did you get .08?

1 Answers · Science & Mathematics · 26/03/2015

2. ### help solving math problem, finding ratios with just the radian measure.?

I'm not sure what you want here. tan = sin/cos sec = 1/cos csc = 1/sin cot = 1/tan = cos/sin and cos(theta) = sin(theta + pi/2) sin(theta) = cos(theta - pi/2) Do you just want to plug in the -6 for theta?

2 Answers · Science & Mathematics · 27/02/2015

3. ### Hw help Algebra 1 Word problems with 2 related equations ?

let x be the number pf 5\$ bills let y be the number of 10\$ bills let n be the total...

2 Answers · Science & Mathematics · 20/02/2015

4. ### ratios and porportions help?

Proportions are about noticing patterns: First write the proportion as top/bottom, top/bottom 6 ..... x --- = ---- 18 ... 27 Notice if you go from 6 to 18, that's multiplying by 3. So to go from x to 27, that should also be multiplying by 3. x...

1 Answers · Science & Mathematics · 12/01/2015

5. ### A tangent is drawn to the graph pf y = x^3 -3x^2 + 6x -5 at its only infection point. The equation of this inflectional tangent is?

If a graph has an inflection point, the slope changes from + to - at that point. (or vice versa). As such, the slope of a tangent line at that point must be zero. NOW, which of those answers are of the form: y = 0x + b or more commonly y = b always, tony

1 Answers · Science & Mathematics · 25/12/2014

6. ### who can solve this TRIANGLE QUESTION?

...presenter is when the camera is at F. For now, the distance PF will be represented by "d" 1) arc cos (d² + 12.96 - 3.24...

1 Answers · Science & Mathematics · 04/12/2014

7. ### Let f:A->B prove that if X is a subset of A and f is one to one, then f(A-X)=f(A)-f(X)?

...contain each other: f(A-X) contains in f(A)-f(X) pf:if y belong to f(A-X), then y=f(x) for some x in A-X...

1 Answers · Science & Mathematics · 15/11/2014

8. ### Math help? (Standard form, scientific notation)?

1. speed=distance/time, therefore speed x time=distance and time=distance/speed. The units of speed are already measured in km, the same as the distance of the galaxy, and the time is measured in years. We therefore don't have to worry about the units...

1 Answers · Science & Mathematics · 25/10/2014

9. ### Calculus BC Question?

Please see attached image. The red line is the bridge, while the blue line is the road along the shore. Let's consider the bridge ends at a point on the shore which is s miles away from the point closest to the well. Then...

2 Answers · Science & Mathematics · 08/10/2014

10. ### Could i get help with an Integration problem 10 pts for the best answer?

...dx /√[(x² + 8x + 16) + 9] = (writing the radicand as a sum pf squares) ∫ dx /√[(x + 4)² + 3²] = let: x + 4 = 3tanθ → tan...

2 Answers · Science & Mathematics · 18/09/2014