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1. ### Which ordered pairs are in R ^-1?

The inverse relation R ^-1 consists of the ordered pairs obtained by ... of B, so the pairs (2,2), (2,6), and (2,8) are in R .  3 divides 6, but no other element of B. So the pair (3,6...

1 Answers · Science & Mathematics · 20/08/2020

2. ### Let R be the region in the xy-plane which lies below the curve y = ^3, above the x-axis and for which 0 ≤ x ≤2.?

a) Given Integral I= ∫∫ R (+)A where R is the region in the xy-plane which lies below...

1 Answers · Science & Mathematics · 19/07/2020

3. ### [Discrete Math] Show that the relation R = {(A, B) | A ⊆ B} on P(U) is transitive where U denotes the universal set?

Let (A,B) ∈ R and (B,C) ∈ R then A ⊆ B and B ⊆ C ⇒ A ⊆ C ⇒ (A, C) ∈ R   . .   .   R is transitive

1 Answers · Science & Mathematics · 28/07/2020

4. ### Determine the truth value of ((~ r ) ^ s) --> ( r ^ t) when r , s and t are all True.?

...q  is always true if p is false, no matter the truth-value of q.  .. r .. s .. t . (~ r )^s .. r ^t . ((~ r ) ^ s) --> ( r ^ t...

1 Answers · Science & Mathematics · 06/06/2020

5. ### 2.1.3 Solve for x 2.2 Make Rs the subject of the formula?

...42 (21/4) * 2^(x) = 42 2^x = 42 * 4 / 21 2^x = 2 * 4 2^x = 8 x = 3 V = R / ( R [s] + r ) * V[dc] V / ( R * V[dc]) = 1 / ( R ...

3 Answers · Science & Mathematics · 23/02/2020

6. ### The formula for angular velocity is w = ______. vr v/ r r /v sr?

v = linear velocity in meters per second (m/s) r = radius in meters (m) ω [omega] = angular velocity in radians per second (rad/s) ω = v / r

2 Answers · Science & Mathematics · 18/06/2020

7. ### Find the area of the upper hemisphere of x^2+y^2+z^2=1 above the interior of one loop of r =cos(2theta). ans. pi[sqrt(2)]-1?

...1-x² - y²). What are then the ranges for r & θ? The element of area is √( 1 +  (dz/dx)² + (dz/dy...

2 Answers · Science & Mathematics · 08/07/2020

8. ### If x^2 +rx+8=(x+s)(x+2), then what is the value of r ?

x² + rx + 8 = (x + s)(x + 2) x² + rx + 8 = x² + sx + 2x + 2s x² + rx + 8 = x² + x(s + 2) + 2s s + 2 = r 2s = 8 s = 4 r = s + 2 = 6 check x² + rx + 8 = (x + s)(x + 2) x² + 6x + 8 = (x + 4)(x + 2) ok

9 Answers · Science & Mathematics · 10/04/2020

9. ### In the xy-plane, the circles with equations (x-3)^2 + y^2 = 11 and (x+2)^2 + y^2 = r ^2 are externally tangent. What is the value of r ?

...equation (x + 2)² + y² = r², Center = (-2, 0) and radius = r The circles are externally tangent, and thus Distance...

3 Answers · Science & Mathematics · 19/07/2020

10. ### In the square QRST, QR= 4. Find the shaded area if Q, R ,S,T are the centers of the area that constitute the figure.?

The area of the square = 4*4=16. The 1/4 circles make up a circle of r =2 area of the circle =pi* R ^2=4pi shaded area =16-4pi

10 Answers · Science & Mathematics · 10/06/2020