After we review on how to solve system of linear equations using algebraic methods (substitution, elimination and graph), we will turn our attention to a new topic/object: the matrix (not the movie): Use your own words (or use formulas) to describe the following: 1) When can we add/subtract two matrices (What is the condition on the dimension of the matrices) and how do we perform the addition/subtraction? 2) When can we multiply two matrices (What is the condition on the dimension of the matrices) and how do we perform the multiplication? 3) There is no division with matrix; however, we can replace the matrix division with multiplying the inverse matrix (if the inverse matrix exists). Assume that the inverse matrix exists, descript how to find the inverse matrix of a 2 by 2 matrix and how to find the inverse matrix of a 3 by 3 matrix.

Q: Evaluate 4-3

A: For a negative exponent, we will use reciprocal first.

Q: Plot 3, - 12, and 9 on the number line. -10 -5 10

A: We need to draw numbers on number line.

Q: 30+120

A: Given; 30+120.

Q: -2

A: Given Integral, I=∫-22x3dxwe have to evaluate the given integral

Q: 8+9-10

A: Given that                                            8+9-10 here we will use BODMAS B= Bracket  O=…

Q: Save dre invX+3

A:

Q: Queslion lo

A:

Q: A solid concrete porch consists of 3 steps and a landing. The steps have a tread of 11 inches, a…

A:

Q: ex- 12

A: Given: y=ex-12 we know that am-n=aman

Q: 15+c=-12

A:

Q: 36 please

A: Given rt=cost i +sint j +2t k  ,  t=π3

Q: 23x-47=12

A: Given Data: Equation: 23x-47=12   To obtain the value of x, various mathematical operations like…

Q: -5+2(8-12)

A: Use PEMDAS rule to simplify.First we work with the parenthesis. In it 8-12=-4

Q: 30x-121=29

A:

Q: 100 %3D 41

A:

Q: 4=2v-14

A: The given equation is,

Q: x-5 %3D500

A: