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3 years ago

Mathematics

2 answers:

Naddik [55]3 years ago

4 0

I dont no i need this point

larisa86 [58]3 years ago

3 0

Answer:

The correct answer is D, 0.20. You add the probabilities of either situation occurring and subtract the probability of both of them occurring.

Step-by-step explanation:

0.25 + 0.08 - 0.13 = 0.20

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Can you help me solve it

serg [7]

Answer:

-5xy²(3x-5)is your answer

5 0

3 years ago

PLEASE HELP FOR QUESTION 4 I WILL MARK BRAINLIST READ IT CAREFULLY

Elza [17]

hey let me tell you this you just never helped me and cheating is not good so yeah treat people the way you want to be treated and I saw your answers to other people it's not good to cheat just a piece of advice

6 0

3 years ago

Pam has 90 m of fencing to enclose an area in a petting zoo with two dividers to separate three types of young animals. The thre

andrew-mc [135]

Answer:

The area function is

$A=\frac{135}{2}x-\frac{9}{2}x^2$ .

The domain and range of A is $(0,15m)$ and $(0, 253.125 m^2]$ .

Step-by-step explanation:

The given length of fencing is $90 m$ .

Let the length and width of each pen be $x$ and $y$ respectively as shown in the figure.

As there are 3 pens, so, the total area,

$A= 3 xy \;\cdots (i)$

From the figure the total length of fencing is $6x+4y$ .

Here, for a significant area for the animals, $x>0$ as well as $y>0$ as $x$ and $y$ are the sides of ben.

From the given value:

$6x+4y=90\;\cdots (ii)$

$\Rightarrow y=\frac {45}{2}-\frac{3x}{2}$

Now, from equation (i)

$A=3x\left(\frac {45}{2}-\frac{3x}{2}\right)$

$\Rightarrow A=\frac{135}{2}x-\frac{9}{2}x^2\;\cdots (iii)$

This is the required area function in the terms of variable $x$ .

For the domain of area function, from equation (ii)

$x=15-\frac{2y}{3}$

$\Rightarrow x$ [as y>0]

So, the domain of area function is $(0,15m)$ .

For the range of area function:

As $x \rightarrow 0$ or $y\rightarrow 0$ , then $A\rightarrow 0$ [from equation (i)]

$\Rightarrow A>0$

Now, differentiate the area function with respect to $x$ .

$\frac {dA}{dx}=\frac{135}{2}-9x$

Equate $\frac {dA}{dx}$ to zero to get the extremum point.

$\frac {dA}{dx}=0$

$\Rightarrow \frac{135}{2}-9x=0$

$\Rightarrow x=\frac{15}{2}$

Check this point by double differentiation

$\frac {d^2A}{dx^2}=-9$

As, $\frac {d^2A}{dx^2}$ , so, point $x=\frac{15}{2}$ is corresponding to maxima.

Put this value back to equation (iii) to get the maximum value of area function. We have

$A=\frac{135}{2}\times \frac {15}{2}-\frac{9}{2}\times \left(\frac {15}{2}\right)^2$

$\Rightarrow A=253.125 m^2$

Hence, the range of area function is $(0, 253.125 m^2]$ .

4 0

4 years ago

The purpose of a battery in a circuit is to _____.

skelet666 [1.2K]

Answer:

Increase the potential of charges in the circuit

Step-by-step explanation:

Hope this is correct

HAVE A GOOD DAY!

7 0

3 years ago

Select the correct answer from each drop-down menu.

Shalnov [3]

Using translation concepts, the correct statement is given by:

If function f was translated down 4 units, the f(x) values would be subtracted by 4. A point in the table for the transformed function would be (1,9).

<h3>What is a translation?</h3>

A translation is represented by a change in the function graph, according to operations such as multiplication or sum/subtraction in it's definition.

A translation down 4 units means that the output values are subtracted by 4, hence the table would be given by:

x 1 2 3 4 5

f(x) 9 15 33 87 249

More can be learned about translation concepts at brainly.com/question/27948675

#SPJ1

3 0

2 years ago

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