# Yahoo Web Search

1. Sort by

1. ### A rectangle has a length pf x . Its width is 3 feet longer than twice the length. Find the dimensions if its a

80=2x^2+3x 2x^2+3x-80=0 solve for x x=-3+sqrt(3^2-4(2)(-80)/2(2) x=5.61 ft w=2x+3 w=14.24ft

3 Answers · Science & Mathematics · 04/03/2008

2. ### Determine whether the graphs pf the twp equations are perpendicular.?

In order to know whether the two lines are in perpendicular, you need to focus on their gradient. Let m1 be the gradient of linear equation 1, y=(m1)x+c and m2 be the gradient of liners equation 2, y=(m2)x+c then if m1 times m2 equal to -1, then the two lines are...

4 Answers · Science & Mathematics · 04/05/2012

3. ### Is 2/5 a solution pf 5m+1=10m-2?

No, 2/5 is not a solution of 5m + 1 = 10m - 2 5m = 3 m = 3/5

6 Answers · Science & Mathematics · 17/03/2012

4. ### R(p) = pf(p). Given f(16) = 8000 and f '(16) = −340, can you find R'(16)?

R(p) is the product of two functions, f(p) and g(p) =p. Product rule.

1 Answers · Science & Mathematics · 20/02/2011

5. ### help me convert .000022uF to pF?

22 pF

6 Answers · Science & Mathematics · 23/10/2006

6. ### Find Linearization L(x) pf f(x) at x=a?

L(x) = f(a) + f'(a)(x - a) f(x) = (x + 1)/x f(a) = f(1) = 2 f'(x) = [x - (x + 1)]/x² = -1/x² f'(a) = f'(1) = -1 L(x) = 2 - (x - 1) = 2 - x + 1 L(x) = 3 - x

1 Answers · Science & Mathematics · 04/11/2009

7. ### find the slope pf the tangent to the curve at the given point:?

1. did you mean : y=7-x^2+4x^3 then dy/dx=-2x+12x^2 x=2 --> dy/dx=2x+12x^2 = 2*2+12*2^2 = 52 x=1 --> dy/dx=2x+12x^2 = 2*1+12*1^2 = 14 2. y^2=1+x^2 -->y=±√(1+x^2) dy/dx=±x/√(1+x^2) x=3 --> dy/dx=±x/√(1+x^2) = ±3/√(10) x=2 --> dy/dx=±x/√(1+x^2) = ±2/√(5)

2 Answers · Science & Mathematics · 29/02/2012

8. ### Find the intercepts pf the following linear equation. 2x - y = 2?

Hi, Recall that the x-intercept occurs when 'y' equals zero to get: 2x - 0 = 2 2x = 2 x = 1 or (1,0) Also, the y-intercept occurs when 'x' equals zero and therefore we get: 2(0) - y = 2 -y = 2 y = -2 or (0,-2) I hope that...

3 Answers · Science & Mathematics · 16/09/2009

9. ### Find the average of all multiples pf 7 between 7 and 777, inclusive?

392. you add up all the multiples, then divide by the number of multiples.

3 Answers · Science & Mathematics · 02/06/2010

10. ### what is the answer pf 6x+5+7x+3=12x+4?

6x+5+7x+3=12x+4 Take all values containing x in one side and all the others in the other side: 6x+7x-12x = 4-5-3 (when moving a number from one side to another, we reverse the sign) 6x+7x-12x = 13x-12x= 1x (or x) 4-5-3 = -1-3=-4 therefore x=-4 (:

11 Answers · Science & Mathematics · 05/07/2009