12) Find AB Show steps a A = -За 41 a -81 -51+2a %3D -3a

Q: Which statement about the linear equation 3a + 1/3 * (6a - 9) = 1/2 * (10a - 6) is true?

A:

Q: Prove that equation x2 + 2x +1 + y² = 0 has only one solution: x = -1 and y = 0. Individual steps of…

A: You just need to order the steps. The solution is given below.

Q: (8x + 3y – 4) - (2x – 2y – 1) = (6 + 3y) + (-2 + 8y) =

A: By solving the given equation we will find the general form. (8x+3y-4)-(2x-2y-1)=? (6+3y)+(-2+8y)=?…

Q: Find x and y if (-3x - 9) + 4i = 6 + (3y - 2)i.

A: Given that,  (-3x - 9) + 4i = 6 + (3y - 2)i To solve for x and y, need to use below property of…

Q: In Exercises 13–21, reduce [A|I] to find A-. In each case, check your calculations by multiplying…

A: Q13&19 asked and answered

Q: Which of the following equations is incorrect? L· (M × Ñ) = Ñ · (M xI) W × ( + P) = -(ỹ × W + P × W…

A: Consider the vector. X→×Z→×Y→=X→·Y→Z→-X→·Z→Y→

Q: 5. Зх — 4у %3D —5 -x + 3y = -5

A: Ans.       3x-4y=-5→       l             -x+3y=-5 →        ll     equation l+3×equation 2…

Q: (b) Ax+By-12 0; x-intercept = -6; y-intercept = %3D %3D

A:

Q: Question 1.) Q R. 2x-16 15у-10 3x+9 Бу+90 T. Find the Value of x and y.

A: Given: To Find: x=?, y=?

Q: 3.9b + a3 + 27 - 3a2 + 5a3 - 2a2 + 2.1b + 7

A:

Q: 8 -9 9 -2 LOMA- [2 ²3] and B-[37] Let = B= 1 (a) Find 5A + 6B. 94-57 5A +6B = 28 21 (b) Find 6A-5B.…

A: Addition and subtraction of Matrices

Q: 6. 2 dx + (2x - y + 3) dy = 0. Use a change of variable. ANS. y + c = −ln |2x − y + 4). 7. Solve the…

A:

Q: Example 9.14. Solve yy + (x + 2)y + xy + x² + 2x + 2 = 0.

A: Please find step by step solution below:

Q: Susie was asked to solve the following system of equations: x+ 3y = 1 - 3x - 3y = - 1 Her solution…

A:

Q: 2p2 – 7p = 14   p = (7 +  \/273)/4                             b.      p = (-2 +  \/14)/7   p =…

A: We have to simplify the expression 2p2-7p=14.

Q: 9(a + b) = 9a+

A: Given, 9(a + b) = 9a+

Q: Find a + b, 2a + 3b, lal, and la - b|. a = (4, –3), b = (-2, 5) a + b = (9,2) (2,9) 2a + 3b =

A:

Q: You are given the graph of a function f. 411 -3-2-1 123 -1+ Determine the intervals where the graph…

A: Concave upward, concave downward and inflection point can be determined from the following figure

Q: (8a in simplest form.

A: 8a-3-23To write in simplest form

Q: (10c + d)° (5b - 5c)° (2d + 6e)° (a + 30)° (a + 2b)° (4f + 4e)° 60°

A:

Q: Assembly Time of a Worker In the following graph, N(t) gives the number of smartphones assembled by…

A: Consider the given graph:

Q: ×: Attend a 4-year college Px: 0.1 X: Attend a junior college Px: 0.2 X: Attend a technical…

A: 1) The probability distribution is given as follows: Event Probability Attend a 4-year…

Q: Find a and b if a + (5 – 3b) i = ai + 2 (b + 5)

A: See the attachment.

Q: a) Find a (b + c) b) Find | a. (b+c) |. State its geometric interpretation. c) Find a vector that is…

A: a=3i-2j+k,b=-2i+j-4k,c=-i+j-3k

Q: What is the value of X? _  and  Y? _

A: Given, 6x-3y=9 -8x+5y=-11

Q: [2x + 4y – 5z = -8 x + 5y + 2z = -1 (3х + Зу + 3z %3D 15 17)

A:

Q: 18) Find a + b, 2a + 3b, |a|,  and |a - b|.  a = 2i - 4j + 4k, b = 2j - k

A: The objective is to Find a + b, 2a + 3b, |a|, and |a - b|.

Q: ») Show that |A + B| < |A| + |B|.( Tringle quality).

A:

Q: You are given the graph of a function f. يجا 2 concave downward 3 4 X Determine the intervals where…

A: Concave downward and concave upward can be determined from the following figure.

Q: 10 If a %3D (-5,-4, 3 ), b %3D (6,-2,-7), с %3D (-2, 2, 4 ) Find 2a - b-0.5 с ? ( - 15, – 7,11) о…

A:

Q: 8) Find BA -5 B = -7 -8 3 A = -6 6. 6 4. #7 #8 Is AB = BA ?

A:

Q: Find real numbers and such that 2.x – 3iy + 4ix – 2 y – 5–10ix = x + y – iy + 2-(3– x)i

A: