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3 years ago

A cup has 4 pencils, 3 black pens, 1 blue pen, and 5 red pens. What is the probability of selecting a black or blue pen?

Mathematics

2 answers:

telo118 [61]3 years ago

7 0

4 out of 13 because in total there are 13 supplies in all and if you add 3 black pens PLUS 1 blue pen that will be 4.

tekilochka [14]3 years ago

5 0

The probability of selecting a black or blue pen is 4 out of 13. You calculate this by adding the amount of pens together and comparing it to the total amount of pens and pencils in the cup.

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25 equivalent expressions to 8x+12

-Dominant- [34]

Here are some
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2 years ago

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Answer:

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3 years ago

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Tpy6a [65]

Answer:

Step-by-step explanation: 40 newtons to the right

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2 years ago

Read 2 more answers

PLEASE HELP...THANK YOU

Ierofanga [76]

The answer to your problem is C the third picture

8 0

3 years ago

How do I do this I'm am really confused?

MrMuchimi

Since (4y-42) and 2y are opposite angles, they equal to each other which looks like this:

4y-42 = 2y

From there you want to put the y onto one side:

4y-2y-42=0 -----> 2y-42=0

You want to balance the equation out and move the -42 onto the other side so you add it to both sides to get:

2y=42

Then divide both sides by 2 to get:

y= 21

From there you can plug 21 back into the original equation to find each angle.

4(21)-42 = 2(21) ---> 84-42 = 42 ---> 42 = 42

So y = 21 and each angle is 42 degrees

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3 years ago