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Eva8 [605]
3 years ago
6

Determine the rate

Mathematics
1 answer:
Tcecarenko [31]3 years ago
6 0
$0.815.
Divide 9 by 12. 9 is divisor and 12 is dividend.
Hope this helps.
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Brilliant_brown [7]
Chilee i DONT know I’m just trying to get these points
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3 years ago
7. In some places, a suspension bridge is the only passage over a river. The height of one such bridge, h, in metres, above the
Cloud [144]
Sure. The function is a parabola. Because the coefficient of the x^2 term is positive, it opens upward. that means that it vertex is a minimum point.

You can verify that the vertex is (0,24). That means that at the point x=0, the height of the bridge is 24m. So if the level water rises below 24 m, the bridge is safe to use.
4 0
3 years ago
The median of a probability distribution can be defined as the number m such that Upper P (Upper X less than or equals m )equals
Alexxandr [17]

Answer:

tex]M=\beta ln(2)[/tex]

Step-by-step explanation:

Previous concepts

The exponential distribution is "the probability distribution of the time between events in a Poisson process (a process in which events occur continuously and independently at a constant average rate).

Solution to the problem

For this case we can use the following Theorem:

"If X is a continuos random variable of the exponential distribution with parameter \beta for some \beta \in R >0"

Then the median of X is \beta ln (2)

Proof

Let M the median for the random variable X.

From the definition for the exponential distribution we know the denisty function of X is given by:

f_X (x) = \frac{1}{\beta} e^{-\frac{x}{\beta}}

Since we need the median we can put this equation:

P(X

If we evaluate the integral we got this:

\frac{1}{\beta} \int_0^M e^{- \frac{x}{\beta}}dx =\frac{1}{\beta} [-\beta e^{-\frac{x}{\beta}}] \Big|_0^M

And that's equal to:

1/2 = 1 -e^{- \frac{M}{\beta}}

And if we solve for M we got:

1-e^{- \frac{M}{\beta}} = \frac{1}{2}

e^{- \frac{M}{\beta}}=\frac{1}{2}

If we apply natural log on both sides we got:

-\frac{M}{\beta}=ln(1/2)

And then M=\beta ln(2)

5 0
3 years ago
Given the formula A = 5h (B + b); solve for B.<br> 2
Artyom0805 [142]

Answer:

A=5h(B+b)

A/5h=B+b

A/5h - b= B

6 0
2 years ago
I need help with this question ive been struggling
Alexeev081 [22]

Answer:

hmmmmmmmmm 3rd?

hope it helps

Step-by-step explanation:

7 0
3 years ago
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