All categories

2 years ago

This is my last question. Can someone answer it?

Mathematics

1 answer:

meriva2 years ago

8 0

Answer:

-25 is the simplest form

You might be interested in

In this problem we will be dealing with the probability density function (pdf) associated with a continuous random variable, X.

konstantin123 [22]

Answer:

$b)\ 0.568$

Step-by-step explanation:

Given

$f(x) = 6x(1- x);\ 0 \le x \le 1$

Required

$P(0.3 < x < 0.7)$

From the question, we have:

$P(a < x < b) = \int\limits^b_a {f(x)} \, dx$

So, we have:

$P(0.3 < x < 0.7) = \int\limits^{0.7}_{0.3} {6x(1 - x)} \, dx$

Open bracket

$P(0.3 < x < 0.7) = \int\limits^{0.7}_{0.3} {6x - 6x^2} \, dx$

Integrate

$P(0.3 < x < 0.7) = \frac{6x^2}{2} - \frac{6x^3}{3}}|\limits^{0.7}_{0.3}$

$P(0.3 < x < 0.7) = 3x^2 - 2x^3|\limits^{0.7}_{0.3}$

Substitute 0.7 and 0.3 for x

$P(0.3 < x < 0.7) = (3*0.7^2 - 2*0.7^3) - (3*0.3^2 - 2*0.3^3)$

Using a calculator, we have:

$P(0.3 < x < 0.7) = (0.784) - (0.216)$

Remove brackets

$P(0.3 < x < 0.7) = 0.784 - 0.216$

$P(0.3 < x < 0.7) = 0.568$

3 0

2 years ago

Solve the proportions 28/35=8/r

mash [69]

ANSWER

r = 10

EXPLANATION

To solve for r first we have to put r in the numerator. To do that, we have to multiply both sides of the proportion by r:

$\begin{gathered} \frac{28}{35}\cdot r=\frac{8}{r}\cdot r \\ \frac{28}{35}r=8 \end{gathered}$

Now, we have to multiply both sides by 35:

$\begin{gathered} \frac{28}{35}r\cdot35=8\cdot35 \\ 28r=280 \end{gathered}$

And finally divide both sides by 28:

$\begin{gathered} \frac{28r}{28}=\frac{280}{28} \\ r=10 \end{gathered}$

6 0

1 year ago

Answer for brainliest

Lynna [10]

Answer:

2, 18, 56.54

Step-by-step explanation:

hope this helped!

3 0

2 years ago

Can anyone help me solve this equation?

andrew-mc [135]

the first box put 21 the second one put 7 then the last one put 7

6 0

2 years ago

What is 7/10-14/100 in simplest form

quester [9]

$\frac{7}{10}-\frac{14}{100}=0.7-0.14=0.70-0.14=0.56$

3 0

3 years ago

Read 2 more answers