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2 years ago

10

GIVING AWAY 100 POINTS!!! BE THE FIRST TWO

2 answers:

Lelu [443]2 years ago

5 0

Answer:

Thank you!!!

Step-by-step explanation:

kipiarov [429]2 years ago

5 0

Answer:

i have 26938 points

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I dont know what to do

Margarita [4]

It is -12<n<-11 so it is between that

5 0

3 years ago

the function y=-2(x-3)^2+4 shows the daily profit (in hundreds of dollars) of a hot dog stand wherex is the price of a hot dog (

Pavlova-9 [17]

Step-by-step explanation:

$y=-2(x-3)^2+4$

To interpret the zeros of this function , put y =0

$0=-2(x-3)^2+4$

$0+2(x-3)^2=4$

$2(x-3)^2=4$

$(x-3)^2=\frac{4}{2}$

$(x-3)^2=2$

Taking square root on both sides:

$(x-3)=\pm \sqrt{2}$

So, we got values of x :

1) $x=3+\sqrt{2}=1.59$

2) $x=3-\sqrt{2}=4.41$

This means the person will have profit if price of a hot dog ranges from $1.59 to $4.41.

8 0

3 years ago

Why is this picture an example of a physical change<br> Plzzzz help

Montano1993 [528]

Answer:

No new substance is being formed.

6 0

3 years ago

Read 2 more answers

The thickness X of aluminum sheets is distributed according to the probability density function f(x) = 450 (x2 - x) if 6 < x

grandymaker [24]

Solution :

Given :

$f(x) = \left\{\begin{matrix}\frac{1}{450}(x^2-x) & \text{if } 6 < x < 12 \\ 0 & \text{otherwise}\end{matrix}\right.$

1. Cumulative distribution function

$P(X \leq x) = \int_{- \infty}^x f(x) \ dx$

$=\int_{- \infty}^6 f(x) dx + \int_{6}^x f(x) dx$

$=0+\int_6^x \frac{1}{450}(x^2-x) \ dx$

$=\frac{1}{450} \int_6^x (x^2-x) \ dx$

$=\frac{1}{450}\left[\frac{x^3}{3}-\frac{x^2}{2}\right]_6^x$

$=\frac{1}{450}\left[ \left( \frac{x^3}{3} - \frac{x^2}{2}\left) - \left( \frac{6^3}{3} - \frac{6^2}{2} \right) \right]$

$=\frac{1}{450}\left[\frac{x^3}{3} - \frac{x^2}{2} - 54 \right]$

2. Mean $E(x) = \int_{- \infty}^{\infty} \ x \ f(x) \ dx$

$=\int_{6}^{12}x . \left( \frac{1}{450} \ (x^2-x)\right)\ dx$

$=\frac{1}{450} \int_6^{12} \ (x^3 - x^2) \ dx$

$=\frac{1}{450} \left[\frac{x^4}{4} - \frac{x^3}{3} \right]_6^{12} \ dx$

$=\frac{1}{450} \left[ \left(\frac{(12)^4}{4} - \frac{(12)^3}{3} \right) - \left(\frac{(6)^4}{4} - \frac{(6)^3}{3} \right)$

$=\frac{1}{450} [4608 - 252]$

= 17.2857

5 0

3 years ago

I'll give brainliest!!! I need help fast please I just need someone to check my answers!!! Don't respond if you don't know what

olga2289 [7]

Answer:

your correct

Step-by-step explanation:

:D

3 0

3 years ago