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3 years ago

Please answer for branliest

Mathematics

1 answer:

Lostsunrise [7]3 years ago

4 0

Answer:

50%

Step-by-step explanation:

There are 2 cards greater than 5 , that is 6 and 7 , then

P( greater than 5 ) = $\frac{2}{4}$ = $\frac{1}{2}$ = 50%

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Let f(x) = xe−x if x ≥ 0 and f(x) = 0 if x < 0 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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1 year ago

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dimaraw [331]

Answer:

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3 years ago

Read 2 more answers

Y+2=3(x + 1) graph?

sladkih [1.3K]

Answer and Step-by-step explanation:

First, solve for y and combine like terms. Then graph.

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3 years ago

Greta is trying to determine the portion of green candies in various bags of green and yellow candies. Using the information bel

IrinaK [193]

Answer: a) $\dfrac{1}{3}$ b) $\dfrac{71}{100}$ c) $\dfrac{5}{9}$

Step-by-step explanation:

Since we have given that

There are green and yellow candies in each bag.

Bag A: Two thirds of the candies are yellow. What portion of the candies is green?

Part of yellow candies in bag A = $\dfrac{2}{3}$

Part of green candies in bag A would be

$1-\dfrac{2}{3}\\\\=\dfrac{3-2}{3}\\\\=\dfrac{1}{3}$

Bag B: 29 % of the candies are yellow. What portion of the candies is green?

Percentage of candies are yellow = 29%

Portion of candies are green is given by

$1-\dfrac{29}{100}\\\\=1-0.29\\\\=0.71\\\\=\dfrac{71}{100}$

Bag C: 4 out of every 9 candies are yellow. What portion of the candies is green?

Portion of yellow candies = $\dfrac{4}{9}$

Portion of green candies would be

$1-\dfrac{4}{9}\\\\=\dfrac{9-4}{9}\\\\=\dfrac{5}{9}$

Hence, a) $\dfrac{1}{3}$ b) $\dfrac{71}{100}$ c) $\dfrac{5}{9}$

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3 years ago

If a person bikes 6 miles in 15 minutes, how far can she bike in 1.5 hours?

Natalka [10]

Answer:

$36\:miles$

Step-by-step explanation:

There is one-and-a-half hour in ninety minutes, so multiply 6 by 15 to get 90, then whatever is done to the bottom is also done to the top, so you square 6 to get 36.

I am joyous to assist you anytime.

8 0

3 years ago