3 years ago

19 3/4−4/9 no example

Mathematics

1 answer:

Jet001 [13]3 years ago

4 0

Answer:

19 11/36

Step-by-step explanation:

19 3/4−4/9

Get a common denominator of 36

19 3/4 *9/9 = 19 27/36

4/9*4/4 = 16/36

19 27/36 - 16/36 = 19 11/36

You might be interested in

-9x - x - 7x² - 6x² + 8 +6<br><br><br><br> Help please

hammer [34]

Answer:

$\boxed{ \bold{ \huge{ { \sf{ - 13 {x}^{2} - 10x + 14}}}}}$

Step-by-step explanation:

$\sf{ - 9x - x - 7 {x}^{2} - 6 {x}^{2} + 8 + 6}$

Collect like terms

⇒ $\sf{ - 7 {x}^{2} - 6 {x}^{2} - 9x - x + 8 + 6}$

⇒ $\sf{ - 13 {x}^{2} - 10x + 8 + 6}$

Add the numbers

⇒ $\sf{ - 13 {x}^{2} - 10x + 14}$

Hope I helped!

Best regards!!

3 0

3 years ago

Read 2 more answers

Let X1, . . . ,Xn be an i.i.d. random sample from a N(0, 1) population. Define Y1 = 1 n n X i=1 Xi , Y2 = 1 n n X i=1 |Xi| . Cal

nalin [4]

For each $1\le i\le n$ , $E[X_i]=0$ , so that

$\displaystyle E[Y_1]=E\left[\frac1n\sum_{i=1}^nX_i\right]=\frac1n\sum_{i=1}^nE[X_i]=0$

Meanwhile,

$\displaystyle E[Y_2]=\frac1n\sum_{i=1}^nE[|X_i|]$

Each of the $X_i$ have PDF

$f_{X_i}(x)=\dfrac1{\sqrt{2\pi}}e^{-x^2/2}$

for $x\in\Bbb R$ . From this we get

$E[|X_i|]=\displaystyle\frac1{\sqrt{2\pi}}\int_{-\infty}^\infty|x|e^{-x^2/2}\,\mathrm dx=\sqrt{\frac2\pi}\int_0^\infty xe^{-x^2/2}\,\mathrm dx=\sqrt{\frac2\pi}$

$\implies E[Y_2]=n\sqrt{\dfrac2\pi}$

8 0

3 years ago

Which statement is always false?

FinnZ [79.3K]

Answer:

All parallelograms are squares

Step-by-step explanation:

Reasoning:

You can have a parallelogram with side lengths, i dont know, 5 and 3, right? That isn't a square :)

8 0

3 years ago

all missing assignments are due today and I head help!!!! how many solutions are in y=-4/9x-3 Y=-7/5x-3

fiasKO [112]

Answer

Where is the picture

Step-by-step explanation:

4 0

3 years ago

what measuring tool did ancient mathematics have and how do they compare to the measuring tools we have today?

german

Answer:

Search it up my guy itsthere

Step-by-step explanation:

3 0

3 years ago