# Yahoo Web Search

1. Sort by

1. ### Need help with inequalitys?

Inequalities are just like equations but the only difference is that when u multiply a negative number the sign of the inequality changes. say for example 4 > 3 which is true now multiply by -1 on both sides so -4 < -3.Note if u don...

3 Answers · Science & Mathematics · 13/01/2014

2. ### In an ellipse a ray of light is emitted from one focus. Prove that...?

...than T is on the exterior. These inequalities result: PF + PG ≥ TF + TG PF' + PG' ≥ TF...

3 Answers · Science & Mathematics · 10/01/2014

3. ### using nominal pi method , find the sending-end voltage and voltage regulation .. more in Additional Details..?

...) = MVA * (<MVA) / [ sqrt(3) * V(R) * (pF)] NOTE: "<" is angle of pF = 25 (- cos...

1 Answers · Science & Mathematics · 02/01/2014

4. ### Need help proving a logic theorem? (P∧Q → R) ⇔ (P∧¬ R → ¬Q)?

... → R)<=> (P ∧ ¬R) => ¬Q (def pf =>) hope it' ll help !!

2 Answers · Science & Mathematics · 18/12/2013

5. ### Geometry I - 3D proofs? Help?

It is due as when they meet they make a 45-45-135-135 angles

1 Answers · Science & Mathematics · 19/12/2013

6. ### I have some math questions to solve...?

...the line be (L) y=√x 2x+3y=5<=>y=-2/3x+5/3 the slope pf this line is -2/3 The general equation of the line (L) is...

2 Answers · Science & Mathematics · 17/12/2013

7. ### multiplication help pls?

...kilocalorie (or 1,000 calories) to heat up 1,000 grams ( or 1 kilogram) pf water by 1° Celsius.

1 Answers · Science & Mathematics · 10/12/2013

8. ### Total power, reactive power and current?

...2) =8305 VA and I = P/V so I = 8,305A. pf = 8000/(1000*8,305) 96,327% Hope this helped.

2 Answers · Science & Mathematics · 08/12/2013

9. ### Trigonometry homework help please. Hyperbola & parabola?

...1.√[(5-0)²+(5+2)²]=√74 √[(5-0)²+(5-2)²]=√34 |PF' - PF|=2a=√74-√34; a≈1.3857 c²=a²+b²; ...

1 Answers · Science & Mathematics · 02/12/2013

10. ### ALGEBRA HELP? URGET??? 5 STARS TO BEST ANSWER!!?

Figure B 5^2 + 12^2 = 13^2

1 Answers · Science & Mathematics · 14/11/2013