All categories

2 years ago

What is the slope of the line below

Mathematics

1 answer:

kirza4 [7]2 years ago

4 0

Answer:

y = 3x

Step-by-step explanation:

You might be interested in

There are 12000 pupils in a school. Find the ratio of the boys to the girls if the number of girl is 650

My name is Ann [436]

227:13, that’s it in its simplest form.

5 0

3 years ago

Find the? inverse, if it? exists, for the given matrix. [4 3] [3 6]

True [87]

Answer:

Therefore, the inverse of given matrix is

$=\begin{pmatrix}\frac{2}{5}&-\frac{1}{5}\\ -\frac{1}{5}&\frac{4}{15}\end{pmatrix}$

Step-by-step explanation:

The inverse of a square matrix $A$ is $A^{-1}$ such that

$A A^{-1}=I$ where I is the identity matrix.

Consider, $A = \left[\begin{array}{ccc}4&3\\3&6\end{array}\right]$

$\mathrm{Matrix\:can\:only\:be\:inverted\:if\:it\:is\:non-singular,\:that\:is:}$

$\det \begin{pmatrix}4&3 \\3&6\end{pmatrix}\ne 0$

$\mathrm{Find\:2x2\:matrix\:inverse\:according\:to\:the\:formula}:\quad \begin{pmatrix}a\:&\:b\:\\ c\:&\:d\:\end{pmatrix}^{-1}=\frac{1}{\det \begin{pmatrix}a\:&\:b\:\\ c\:&\:d\:\end{pmatrix}}\begin{pmatrix}d\:&\:-b\:\\ -c\:&\:a\:\end{pmatrix}$

$=\frac{1}{\det \begin{pmatrix}4&3\\ 3&6\end{pmatrix}}\begin{pmatrix}6&-3\\ -3&4\end{pmatrix}$

$\mathrm{Find\:the\:matrix\:determinant\:according\:to\:formula}:\quad \det \begin{pmatrix}a\:&\:b\:\\ c\:&\:d\:\end{pmatrix}\:=\:ad-bc$

$4\cdot \:6-3\cdot \:3=15$

$=\frac{1}{15}\begin{pmatrix}6&-3\\ -3&4\end{pmatrix}$

$=\begin{pmatrix}\frac{2}{5}&-\frac{1}{5}\\ -\frac{1}{5}&\frac{4}{15}\end{pmatrix}$

Therefore, the inverse of given matrix is

$=\begin{pmatrix}\frac{2}{5}&-\frac{1}{5}\\ -\frac{1}{5}&\frac{4}{15}\end{pmatrix}$

4 0

3 years ago

Pls help me thanks!!

Leni [432]

Answer:

Its A <3

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

21. Estimate the annual wages for a cashier who earns $11 an hour.

DerKrebs [107]

Answer:

~22,000 /yr

Step-by-step explanation:

52 weeks/yr

5 day work week (8 hrs a day 40hrs a week)

comes out to 22,880 but mandatory holidays would be lower

3 0

2 years ago

PLEASE HELP!!!!!!!!!

notka56 [123]

Answer:

thyx

Step-by-step explanation:

sakfjy

7 0

3 years ago