If n(A) =130, n(B) =135, and n(A ∪ B) =250, what is n(A ∩ B)?

Q: Why the final answer is 4sin(1+x)?

A: To simplify 4 sin 5x cos 6x+4 cos 5x sin 6x.To justify whether the final answer is 4 sin1+x.

Q: What is y×5÷10?

A: y/2

Q: -3(w+1)+8(w-3)=-5w+9+6w

A:

Q: (√−81 + 3)(√−25 − 1)

A:

Q: Prove : (A-B)n C =(A n C) -B

A:

Q: Let A=[-5   -8]            [   7   4]   Find -4A

A: Given the given matrix is A=-5-874

Q: If B = 101 -2 -2 -2 122 then det (B5) = 0

A:

Q: Is this a r

A:

Q: nd f(7zº + 5x³) dx Find + C

A: Given:     ∫7x6+5x3dx=∫7x6dx+∫5x3dx=7∫x6dx+5∫x3dxwe know that ∫xndx=xn+1n+1

Q: If B = 101 -2 2 2 -2 -2 -1 then det (B5) =

A:

Q: Evaluate 4 [^3(3²) + 3(1²) dz =

A:

Q: what is 14y + 49 = __ ( 2y + 7 )

A:

Q: Let A = {1, 13, 100} and B = {7,13}. Then: (a) What is AU B? (b) What is An B? (c) What is A × B?

A:

Q: (12 – 8j)(4 + 3j) + 10

A:

Q: Explain How does = K/K+1)/2K+1) + / K+ 1)² = + (K+1) (2K² + K +6K+6) to me:

A:

Q: 17. Simplify the following into complex numbers of the form a + bi. (a) √ 2√8

A:

Q: f 98 + 3a = 4b, what is a in terms of b?

A: Given, 98+3a=4b what is a in terms of b

Q: 4)3√2 +(12) 5√64

A: We have to find the value

Q: Show that 14C5 x 5! = 14P,. %3D

A: Combination formula:Crn=n!r!(n-r)!Permutation formula:Prn=n!(n-r)!

Q: (a + b) (a+b+c) = a² + 2ab + b² + ac + bc Select one: O True O False

A: Solution-

Q: what is 2(p+4)=2

A: Step 1:  2(p+4)=2 Step 2: 2p+8=2 Step 3: 2p=2-8 Step 4: 2p=-6 Step 5:  p=-6/2 Step 6: p= -3

Q: Suppose P(AIB) = X and P(A n B) = 8 What is P(B)?

A: P(A|B) = 14P(A∩B) = 18P(B) = ?