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zlopas [31]
2 years ago
12

D

Mathematics
2 answers:
lions [1.4K]2 years ago
5 0

Answer:

I think its A tell me if i'm right :)

Step-by-step explanation: and B i'm not 100% sure

alexandr402 [8]2 years ago
5 0
Idc gcrecrggrrfgrrurjejej
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Two intersecting lines have of point(s) in common.
Dmitry [639]

Answer:A line segment

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
It is a well-known fact that 50% of the general population are rascals (P(R) = 0.5) and 50% of the general population are not ra
aleksley [76]

Answer:

The answer is D. 0.75

Step-by-step explanation:

Let call R the event that a person is rascal, RC a person is not rascal, TH a person use top hat and NTH a person don’t use top hat.  

From the information on the question we have 4 options with their respective probability:

1. A person could be rascal and use top Hat: this probability is calculate as the multiplication of the probability of be a rascal (0.5) and use a top hat (0.9), then:

P(R y TH)=0.5*0.9=0.45

2. A person could be rascal and don’t use top Hat: this probability is calculate as the multiplication of the probability of be a rascal (0.5) and not use a top hat (0.9), then:

P(R y NTH)=0.5*0.1=0.05

3. A person could be not rascal and use top Hat: this probability is calculate as the multiplication of the probability of not be a rascal (0.5) and use a top hat (0.3), then:

P(RC y TH)=0.5*0.3=0.15

4. A person could be not rascal and not use top Hat: this probability is calculate as the multiplication of the probability of not be a rascal (0.5) and not use a top hat (0.7), then:

P(RC y NTH)=0.5*0.7=0.35

Then the probability that a person is a rascal given that he is wearing a top hat could be written and calculate as:

P(R/TH)=\frac{P(R y TH)}{P(TH)}

For calculate P(TH) we need to sum all the option in which TH is involve so:

P(TH) = P(R y TH)+ P(RC y TH)

P(TH)=0.45+0.15=0.6

Replacing values on the first equation we get:

P(R/TH)=\frac{0.45}{0.6} =0.75

So, the probability that a person is a rascal given that he is wearing a top hat is 0.75

5 0
3 years ago
What happens to the value of the expression 80-2r as r decreases?
Ghella [55]

Answer:The value of the expression increases as r decreases.

Step-by-step explanation:

To find : What happens to the value of the expression as r decreases?

Given Expression: 80-2r

We check for different value of r as decreasing order,

r        80-2r

5        80-10=70

4        80-8=72

3        80-6=74

2        80-4=76

1         80-2=78

As r decreases the value of expression increases.

Therefore, the value of the expression increases as r decreases.

Hope this helps!

8 0
3 years ago
Read 2 more answers
Suzanne wants to put a fence around her square garden. If the garden covers an area of 49ft^2, how many feet of fencing does she
lina2011 [118]

Answer:

The area for a square is given by:

A = x^2

And we can find the dimension for one side like this:

x = \sqrt{A}

Replacing we got:

x = \sqrt{49 ft^2}= 7ft

Then since we are interested in the how many feet of fencing does she need, we can find the perimeter given by:

P = 4x and replacing we got:

P = 4*7 ft = 28 ft

Step-by-step explanation:

For this case we know that Suzanne want to put a fance around a square garden with an area of 49 ft^2

The area for a square is given by:

A = x^2

And we can find the dimension for one side like this:

x = \sqrt{A}

Replacing we got:

x = \sqrt{49 ft^2}= 7ft

Then since we are interested in the how many feet of fencing does she need, we can find the perimeter given by:

P = 4x and replacing we got:

P = 4*7 ft = 28 ft

8 0
3 years ago
Please help!<br> With the picture!
Umnica [9.8K]
The answer is no picture
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3 years ago
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