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3 years ago

HURRY PLSSSSSS HELPPP

Mathematics

2 answers:

tester [92]3 years ago

6 0

Answer:

a. when there are outliers in the data sets

b. when there are no big gaps in the middle of the data sets

d. when the plots representing the data are nonsymmetrical

Step-by-step explanation:

Jlenok [28]3 years ago

3 0

Answer: its A, B, and D

Step-by-step explanation:

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

What is 11.42424242 converted into a rational expression in the form of a fraction?

tester [92]

The answer is 11 and 14/33.

3 0

4 years ago

Inez says you can plot 4/0 on a number line, but Jeremiah says you cannot. Who is correct? Explain.

anyanavicka [17]

Answer:

Jeremiah is correct

Step-by-step explanati

because any number divided by 0 is 0 and can be represented on a number line.

6 0

4 years ago

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Edge proof would be amazing and I will give brainliest for it!

inna [77]

Answer: The answer is B.

Step-by-step explanation: The scale on the y-axis could be changed to 100–120.

7 0

1 year ago

NEED HELP ASAP

joja [24]

Answer:

-2/3

Step-by-step explanation:

If you do the slope intercept form (y=mx+b) you'll get -2/3

The y-intercept would be at (0,8)

8 0

2 years ago

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