2 years ago

PLZ HELP!!! I NEED THIS ANSWER FAST! thank you :)

Mathematics

2 answers:

Montano1993 [528]2 years ago

7 0

Answer:

Step-by-step explanation:

Branliest plss. It will make my day :-)

mr Goodwill [35]2 years ago

5 0

The answer is B because greater than or equal to is a closed circle and it’s pointing to the greater numbers

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5 in<br> 9 in<br> 10 in<br> Surface Area =

yKpoI14uk [10]

5*9*10= Surface Area

5 0

3 years ago

The waiting time at an elevator is uniformly distributed between 30 and 200 seconds. what is the probability a rider must wait m

stira [4]

1.5 minutes = 90 second

The probability density function is

$f_X(x)=\begin{cases}\dfrac1{200-30}=\dfrac1{170}&\text{for }30\le x\le200\\\\0&\text{otherwise}\end{cases}$

so the probability of interest is

$\mathbb P(X>90)=\displaystyle\int_{90}^\infty f_X(x)\,\mathrm dx$
$\mathbb P(X>90)=\dfrac1{170}\displaystyle\int_{90}^{200}\mathrm dx$
$\mathbb P(X>90)=\dfrac{200-90}{170}=\dfrac{11}{17}\approx0.6471$