Matrix

Theme: Matrix...

The sum of two numbers is 95, and their difference is 61. What are the two numbers?

Suppose theta= 11pi/12. use the sum identity to find the exact value of sin theta?

A dealer sells a certain type of chair and a table for $40. He also sells the same sort of table and a desk for $83 or a chair and a desk for $77. Find the price of a chair, table, and of a desk.

1. The stright line y=x+3 cuts the curve x^2 + y^2 = 29 at two points. a) Prove that x^2 + 3x - 10 = 0 b) Hence find the coordinates of the points.

What is an idempotent matrix?

Find the matrix product, if possible. Show your work please|-1 3| |5 4|multiplied by |0 -2 6||1 -3 2|

What’s X-y=3 2x+y=12

Row reduction of the augmented matrix 2x-y=7 3x+4y=-6

A child has a piggy bank that contains only quarters and dimes. Altogether, there are 27 coins in the bank and the total value of the coins is $4.50. How many quarters and how many dimes are in the piggy bank? I cant get the right answer no matter what I do

Write a function to represent each series of transformations: • rotation of 90 degrees counterclockwise about the origin, point O, then a reflection across the x-axis • reflection across the y-axis, then a translation a units to the right and b units up • translation a units to the right and b units up, then a rotation of 180 degrees counterclockwise about the origin, then a reflection across the y-axis

Solve the system of equations using cramer’s rule -x+y-3z=-4 3x-2y+8z=14 2x-2y+5z=7

Matrix. How do find x and y?

Matrix Question. Which expression gives the y-coordinate of the solution of the system?

Is Crammer’s Rule always applicable when trying to solve a system of linear equations? Explain.

If an equation is an identity, then how many solutions does it have? a. zero b. one c. infinite

Solve and verify each of the following of linear eequations 2X+3y=432 and 5x-2y=16

Solve the following system by any method -8x-8y=0 -8x+2y=-20

with this question on multiplying matrices, I’ve been on it for over 20 minutes and I’m about to cry (ignore the 240 at the end, it’s probably wrong)

Use the matrix method to solve? -x + 4y = 8 -2x + y = 9 -x = ___a0 -y = ___a1

AND WALK THROUGH! Solve the system using an augmented matrix. -x-3y=-17 2x-6y=-26 explain what I am supposed to do in this problem?

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