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castortr0y [4]
2 years ago
8

There are 16 marbles in a bag 12 of them are blue and 4 are yellow. what is the probability of picking a blue marble then a yell

ow marble without replacing the first one
11/20
3/7
1/5​
Mathematics
1 answer:
Art [367]2 years ago
3 0

Answer:

1/5

Step-by-step explanation:

the prob that you will pick a blue marble would be 12/16, easy.

then the prob of picking a yellow marble after that would be 4/15 since one marble is already missing. multiply the numerator and denominator of each fraction. so 12 x 4 and 16 x 15 to get 48/240. then divide each by 48 to get 1/5.

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A box contains two purple marbles nine orange marbles and seven yellow marbles if you pick two without looking what is the proba
maw [93]

Answer:

1/4

Step-by-step explanation:

First, add up the marbles:

2 + 9 + 7  = 18

Multiply by 2 because you pick two:

18 × 2 = 36

Simplify:

9/36 = 3/12 = 1/4

Hope this helped.

8 0
2 years ago
I need help breaking this down
sergeinik [125]

Answer:

see explanation

Step-by-step explanation:

Given

2cosΘ - \sqrt{2} = 0 ( add \sqrt{2} to both sides )

2cosΘ = \sqrt{2} ( divide both sides by 2 )

cosΘ = \frac{\sqrt{2} }{2}

Since cosΘ > 0 then Θ is in first and fourth quadrants, hence

Θ = cos^{-1} ( \frac{\sqrt{2} }{2} ) = \frac{\pi }{4}

OR

Θ = 2π - \frac{\pi }{4} = \frac{7\pi }{4}

solutions are Θ = \frac{\pi }{4}, \frac{7\pi }{4}

3 0
3 years ago
Read 2 more answers
What does 5/10 = to 25 over blank
Levart [38]
5/10 is equal to 25/50
I ts because you multiply 5x5 to get 25 and do the same to the denominator so 10x5 is equal to 50 so 25/50 is the answer.
7 0
3 years ago
Solve Each Equation PLS SHOW WORK<br><br> |8m + 7| - 5 = 60
diamong [38]

Answer:

m = 7.25

Step-by-step explanation:

8m + 7 - 5 = 60

Evaluate like terms.

8m + 2 = 60

Isolate 8m.

8m = 60 - 2

Evaluate.

8m = 58

Find m.

m = 58 ÷ 8

m = 7.25

5 0
3 years ago
Read 2 more answers
The environment club is having a trash pickup day. There are 130 people signed up to help. For the trash pickup day they will wo
WINSTONCH [101]

Answer: 33 groups

Step-by-step explanation:

Number of people that signed for help = 130 people

Number of people that can join a group = 4.

Number of groups that will be formed will be:

= Number of people that signed for help / Number of people that can join a group

= 130/4

= 32.5

= 33 groups

Since there'll be a remainder of 2 people, they will form a new group making 33 groups.

8 0
3 years ago
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