3 years ago

I’m confused on this a little ..

Mathematics

1 answer:

Mrrafil [7]3 years ago

6 0

You multiply all of the As by 7 and all of the Bs by 6 and then add all of the numbers

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Let f(x) = xe−x if x ≥ 0 and f(x) = 0 if x < 0<br> Is f a probability density function?

Lynna [10]

Yes. $f(x)$ is a PDF if

• $f(x) \ge 0$ for all $x$ in the support; this is true, since $e^{-x}>0$ for all $x$ , and multiplying a positive number $x$ doesn't change this fact;

• the integral of $f(x)$ over its support is 1; this is also true, since

$\displaystyle \int_{-\infty}^\infty f(x) \, dx = \int_0^\infty xe^{-x} \, dx = 1$

which can be computed by parts.

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lianna [129]

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3 years ago

Find each angle measure

tigry1 [53]

Answer:

1=125

2=55

3=55

4=125

5=125

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Step-by-step explanation:

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2 years ago

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Rudik [331]

Answer:

20 Units

Step-by-step explanation:

Hight times length/by half is tribular prism Formula

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2 years ago

For each equation below find y if x = 2

Charra [1.4K]

A.
y = 7 - |x| = 7 - 2 = 5

b.
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c.
y = √(x + 14) = √(2 + 14) = √16 = 4

6 0

3 years ago

Read 2 more answers