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-BARSIC- [3]
3 years ago
12

A bag contains 10 marbles. 5 of them are red marbles, 2 blue marbles, and 3 green marbles. You randomly pick a marble out of the

bag. What is the probability that you picked a red marble?
Mathematics
1 answer:
Akimi4 [234]3 years ago
3 0

The probability of randomly picking out a red marble is 50%, or 1/2.

You can figure this out by finding out the percentage of each marble in the bag, and that percentage would be the probability for picking out that colour of marble. For example, the percentage of red marbles in the bag is 50%, the percentage of blue marbles in the bag is 20%, and the percentage of green marbles in the bag is 30%.

By doing this, you figured out not only the percentage of each colour of marble in the bag, but you also figured out the probability of each marble being randomly picked out of the bag.

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Eighth grade ) T.5 Pythagorean theorem: word problems 87U
Komok [63]

Answer:

The tree is 12 feet tall

Step-by-step explanation:

Let a represent the length of where the bird was sitting to the oak tree

let b represent the height of the tree

let c represent the length at which the bird flew

by pythagoras theorem

c²=a²+b²

b²=c²-a²

b =  \sqrt{ {c}^{2} -  {a}^{2}  }

subtitute in the values

b =  \sqrt{ {15}^{2} -  {9}^{2}  }

b =  \sqrt{225 - 81}

b =  \sqrt{144}

b = 12

7 0
2 years ago
Answer pleaseee!!!!!!!
stiks02 [169]
3 x 1/8 bottom left. The third one
4 0
3 years ago
Inessa ran 3 laps in 8 minutes. How long would it take her to run 10 laps at this pace? (This is proportions)
Degger [83]

Answer:

26.6 minutes

Step-by-step explanation:

Set up a proportion

3/8 = 10/x

cross multiply

3x = 80

x = 26.6

5 0
3 years ago
Joe makes belts. He has 9 buckles. He uses 12 rivets on each of 4 belts and 15 rivets on each of 2 belts. He has 22 rivets left
Lerok [7]

Answers:

1. There are rivets on the belts.

2. Extra information given in the problem:

a. He has 9 buckles.

b. He has 22 rivets left over.


Solution:

1. Total rivets on the belts=(12 rivets/belt)(4 belts)+(15 rivets/belt)(2 belts)

Total rivets on the belts=48 rivets+30 rivets

Total rivets on the belts=78 rivets


2. The extra information given in the problem is the information that we didn't use to solve it. In this case:

a. He has 9 buckles.

b. He has 22 rivets left over.

4 0
3 years ago
4. What are the next three numbers in this pattern? 7,4, 1, -2
Aleksandr [31]

Answer:

-5, -8, -11

Step-by-step explanation:

Common difference:

d = 4 - 7 \\ d =  - 3

8 0
3 years ago
Read 2 more answers
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