1 year ago

PLEASE I NEED HELP WITH THIS

Mathematics

1 answer:

Masteriza [31]1 year ago

3 0

Answer: $m\angle 2+m\angle 5=180^{\circ}$

Step-by-step explanation:

You are ending by proving $\angle 2$ and $\angle 5$ are supplementary, so right before that, you need to prove their measures add to 180 degrees.

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Factored Form:<br><br> y=2(x+5)(x+4)<br><br> What are the x- intercepts, y-intercepts, and vertex?

geniusboy [140]

X=-5,-4
Vertex = -b/2a= -9/2
Y intercept= 40

Mark brainliest please

Hope this helps you

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2 years ago

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

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

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

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2 years ago

The area of a rectangular wall of a barn is 144 square feet. Its length is 10 feet longer than the width. Find the length and wi

denpristay [2]

Answer:

8 feet

Step-by-step explanation:

Let l and w be length and width, respectively. Then:

lw=144 and

l=w+10

So:

w(w+10)=144

w²+10w-144=0

(w+18)(w-8)=0

w=8 as the width ................

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2 years ago

What is the missing fraction for 1/6 1/8 1/4 ?/? = 1whole

denis23 [38]

The answer is 11/24.

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2 years ago

Could someone explain to me what is the process

Phoenix [80]

Answer:

You just multiple the number of apples one truck can carry by the number of trucks total.

The second one you divide 4551 by 37 and round your answer up.

Step-by-step explanation:

So it would be 23*37.

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2 years ago

Read 2 more answers