Question

the easiest way to solve a set of linear eqns in 3 variables using matrix or determinents

Answer 1

Determinents allow you to see if the system is linearly independant (or not) without needing to actually solve the system. det() = 0?

i.e.
1x + 2y + 3z = 0 (eq 1)
-2x + 0y -2z = 2 (eq 2)
-1x + 2y + 1z = 2 (eq 3)

is a system that's not linearly independant (eq 3 = eq 2 + eq 1) Therefore, there is not a unique solution for the 3 variables x,y, & z.

Answer 2

Cramer's Rule

Answer 3

best way is to find through Cramer's Rule

Answer 4

Best way to find it is to use Gaussian elimination. Cramer's rule is computationally inefficient, but easier on the brain if you have a calculator.

Answer 5

Four students were asked to write an expression which has terms that have a greatest common factor of 8c.

Answer 6

hey kids. im leaving questioncove forever.

Answer 7

Which value must be added to the expression x2 u2013 3x to make it a perfect-square trinomial?
mc004-1.

Answer 8

Which expression is a quadratic binomial?
mc005-1.jpg
mc005-2.jpg
mc005-3.jpg
mc005-4.

Answer 9

Use synthetic division to solve mc005-1.jpg. What is the quotient?
mc005-2.jpg
mc005-3.

Answer 10

The polynomial function f(x) is a fourth degree polynomial. Which of the following could be the complete list of the roots of f(x)?
3, 4, 5, 6
3, 4, 5, 6i
3

Answer 11

A geometric sequence is defined recursively by an = 5an-1. The first term of the sequence is 0.

Answer 12

Which statement is true? Check all that apply.
A.Volume is the amount of space inside an object.

Answer 13

Jade has $451.89 in her checking account. After 3 checks, each for the same amount, are deducted from her account, she has $358.

Answer 14

The school record in the 200-meter dash is 34.5 seconds. Which graph represents t

Answer 15

Khaleem wanted to draw a triangle where the sides measured 5 cm, 8 cm, and 7 cm.

Answer 16

What shapes can the composite figure be decomposed into? Check all that apply.

A.

Answer 17

What is the other dimension of the rectangular cross section that is perpendicula

Answer 18

What rhetorical device is used in this excerpt from Mark Twain's "The Danger of L

Answer 19

Given that u2220ABC u2245 u2220DBE, which statement must be true

Answer 20

When Olivia meets Sebastian again, she brings a priest with her and asks Sebastian to "Plight [her] the full assurance of [his] faith.

Answer 21

Fre shavocado

Answer 22

Percent of change.

Answer 23

What is the meaning of the idiom "to swallow something hook, line, and sinker"?

A.