= [²¹] and B = [₁³], 79 47 If A = A [7.4 11 13 find-2A + 4B.

Q: Simplify -9/4(1/2)+3/4 / 5/6

A: Here we use the result that (a/b)*(c/d)=ac/bd and (a/b)/(c/d)=ad/bc , and we simplify the two…

Q: Simplify. Assume that all variables represent positive real numbers. (a) V9x12y14 = .-. ... (b)…

A:

Q: .22メ-3 when x=-3 G-メフナス

A:

Q: Find dr for 8719,719 = 3.

A:

Q: 20+1/5c=-7

A: Ans:            -20+15c=-7  cross multiply⇒-20+1=5c-7                          ⇒-19=-35c…

Q: Simplify the following under Zs and Z7. (-4) + a. 3 -2 b. 3-1 -5+(-11) C.

A:

Q: 1/4+1/5-1/6+1/7-1/8

A: Given, -1/4+1/5-1/6+1/7-1/8

Q: then A-1 A 7 -8

A: Where  is the transpose matrix of the cofactors.The expression for the cofactors is:

Q: Simplify (8a power 3 bpower2 c power 0)

A:

Q: What is -2/3+8/9

A: -23+89

Q: 42 is equal to 2z. O True O False

A:

Q: -1+3/7t=-6/7

A: Given:

Q: +-1²-)-(4-44)dy

A: ∫yndy=yn+1n+1+c

Q: 5 ( 1.1x + 9 ) = 2 ( -6 - 0.1x )

A: First we solve the bracket and then we rearrange the equation. All the variable are arrange in one…

Q: -11 greater tahn or equal to 6 - 2n - 5

A:

Q: Divide the following expressions   1. 3x²y/ xy   2. 6x⁵y⁴/ 2xy³   3. x²-2x-3/ x-1   4. x²+5x+6/ x+2

A: Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…