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mote1985 [20]
3 years ago
11

a deck of 108 cards contain an equal number of each color: red, yello , green , and black. if a card is choosen at random, what

is the probability that it is black ?
Mathematics
2 answers:
emmainna [20.7K]3 years ago
7 0

The probability of picking a black card is 1:4 or 25% chance.

emmasim [6.3K]3 years ago
5 0

Answer:

answer is 1/4 or 25%

this is what i did

You might be interested in
What is the slope of the line passing through the points (-1,-7) and (-9,-2)?
nalin [4]

Answer: m = -5/8

Step-by-step explanation:

The general equation for slope is rise over run, also known as:

m=(y2-y1)/(x2-x1)

From the points (x, y), we can get all the variables we need.

(-1, -7) gives us x1 = -1 and y1 = -7

(-9, -2) gives us x2 = -9 and y2 = -2

If we plug all the values in, we get:

m = (-2 - (-7))/(-9 - (-1))

m = (-2 + 7)/(-9 + 1) the negatives cancel

m = (5)/(-8)

m = -5/8

7 0
3 years ago
Let f (x) = -1/2(x + 2)+ 5
bogdanovich [222]

Answer:

Rate of change = -1

Step-by-step explanation:

Given:

f(x) = -½(x + 2)² + 5

Required:

Average rate of change from x = -3 to x = 1

Solution:

Rate of change = \frac{f(b) - f(a)}{b - a}

Where,

a = -3,

f(a) = f(-3) = -½(-3 + 2)² + 5 = -½(-1)² + 5 = 4.5

b = 1,

f(b) = f(1) = -½(1 + 2)² + 5 = -½(9) + 5 = 0.5

Plug in the values into the formula:

Rate of change = \frac{0.5 - 4.5}{1 - (-3)}

Rate of change = \frac{-4}{4}

Rate of change = -1

8 0
3 years ago
HELP PLEASE! ITS DUE IN 1H PLEASE!!!
Andreas93 [3]
Tbh ion even know what this shii is
7 0
2 years ago
4 Suki watches a movie and eats a snack afterward. The movie starts at 7:15 PM
Olin [163]
<h2>Answer:</h2>

25 minutes long

<h2>Explanation:</h2>

Hope this helps!

Ok so we know that the movie starts at 7:15 PM. The duration of the movie is 1.5 hours long. She begins eating her snack after the movie which, sense 7:15 plus 1.5 hours is 8:45, is 8:45. She finishes her snack at 9:10. What is the difference between 9:10 and 8:45?

For me, the easiest thing to do we would be to add a half hour (30 minutes) to the 8:45. This gets 9:15. Since 9:15 is past 9:10, I subtract the difference to get 5 minutes. I then take the 30 minutes I added to the 8:45 and subtract the 5 minutes that it went over to get 25 minutes. This is the easiest way to get the answer in my opinion. Sorry if this could not be of help to you!

Diagram to better understand maybe? (I did the best I could with this lol)

                                              x (the 25 minutes you found once you solved it)

                                                                                      ^

7:15 PM ----------------------------- 1.5 hours later----------------------------------- 9:10 PM

^                                                          ^                                                            ^

Time the movie started          Movie length             When she finished eating

<h2>♡ I am so proud of you! You are doing amazing and you are glowing! Keep up the great work and have a good day! ♡</h2>
6 0
2 years ago
Solve the following system by using substitution.<br><br> 4x+2y=18<br> y=x+3
Kay [80]
X=2, y=5 hope it helps
7 0
2 years ago
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