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Phantasy [73]
3 years ago
14

A pen is dropped on a hardwood floor and a 1 is recorded if the pen crosses a line and a 0 if it does not. Estimate the probabil

ity that the pen crosses a line in a single drop. 1 1 1 0 1 0 0 1 0 0 1 1 1
A. 3/13

B. 5/13

C. 5/8

D. 8/13
Mathematics
1 answer:
Georgia [21]3 years ago
6 0

Answer:

D. 8/13

Step-by-step explanation:

Of the 13 drops, the pen crossed a line 8 times (there are 8 1's).  So the probability is 8/13.

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In a school, the ratio of boys to girls is 4:3. There are 216 boys. How many girls are there?
tankabanditka [31]

Answer:

162

Step-by-step explanation:

Divide 216 by 4

Then multiply 3 times

That's the answer

5 0
3 years ago
If θ is an angle in standard position and its terminal side passes through the point (-7,-5), find the exact value of cot ⁡ θ co
tresset_1 [31]

Plot the point (-7, -5). We are in quadrant 3.

We also know that tan θ = opp/adj.

Cot θ = adj/opp.

Let us use a^2 + b^2 = r^2 to show you how to find r, the radius aka hypotenuse.

Look: (-7)^2 + (-5)^2 = r^2

If you should ever need to find r, do this:

(-7)^2 + (-5)^2 = r^2

(49) + 25) = r^2

74 = r^2

Take the square root on both sides of the equation to find r.

sqrt{74} = sqrt{r^2}

sqrt{74} = r

It is ok to simplify the sqrt{74} but not needed.

We now have the three sides of the triangle that is form in quadrant 3.

We can now read cot θ from the triangle itself.

So, cot θ = adj/opp = (-7)/(-5) or 7/5.

No need to find r but I simply wanted to show you how it's done in case you are given a question where r must be found.

4 0
3 years ago
Which situation would best be represented by positive 6 ?
ohaa [14]

Answer: THE ANSWER IS D. Everything else is negative.

Step-by-step explanation:

If this helped please mark me Brainliest. thank you and have a nice day!

3 0
3 years ago
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I WILL MARK BRAINLEST! PLEASE GVE AN ANSWER
vladimir2022 [97]

Answer:A

Step-by-step explanation:its A

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solmaris [256]
The girls fill the roles of a grandmother, mother, and daughter by permutation. It is a way, especially one of several possible variations, in which a set or number of things can be ordered or arranged. Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions.
5 0
3 years ago
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