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Olin [163]
3 years ago
10

A bag contains 10 red marbles, 15 yellow marbles, 5 green marbles, and 20 blue marbles. Two marbles are drawn from the

Mathematics
1 answer:
tamaranim1 [39]3 years ago
3 0

Answer:

<u />

  •     <u>        (₁₀C₁) × (₂₀C₁)       </u>

                           ₅₀C₂

Explanation:

There are a total number of 10 + 15 + 5 + 20 = 50 marbles.

The number of ways in which any two marbles can be drawn is the combination of 50 marbles taken two at a time: ₅₀C₂, since the order does not matter.

There are 10 red marbles and 20 blue marbles.

Thus, the combinations with one red marble are: ₁₀C₁.

The combinations with one blue marble are: ₂₀C₁.

The combinations with one red and one blue marble is the product of the previous two:

  • ₁₀C₁ × ₂₀C₁

Thus, the probability that one of the marbles is read and the other is blue is the quotient of the two sets:

<u />

  •     <u>        (₁₀C₁) × (₂₀C₁)       </u>

                           ₅₀C₂

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5 points
Ahat [919]

Answer:

Students

Step-by-step explanation:

Teachers: 13/20= 0.65 = 65%

Students: 37/50= 0.74 = 74%

74% > 65%

Students are more in favor of the new club than teachers

7 0
2 years ago
What's the correct answer to this..? Please help
mestny [16]

Answer:

D. {x:-8≤x<-5}

Step-by-step explanation:

x≥-8

x={-8,-7,-6,-5,-4,-3,-2,-1,0...}

x<-5

x={-6,-7,-8,-9,-0...}

Numbers equal to or less than -8 are also less than -5

Hope it helps ;) ❤❤❤

6 0
3 years ago
Read 2 more answers
How to work it out and get it right
shtirl [24]
OOH, that's tricky--- give a shot first though!
5 0
3 years ago
During a science experiment,the temperature of a solution in beaker 1 was 5 degrees below zero. The temperature of a solution in
GaryK [48]
Answer:
5 degrees

Step-by-step explanation:

We are given that during a science experiment
The temperature of a solution in a beaker 15 degrees below zero
The temperature of solution in a beaker 2 was opposite of the temperature in beaker 1
We have to determine the temperature of beaker 2.
It mean temperature of beaker 1 solution=-5 degrees
According to question
Temperature of beaker 2 solution =5 degrees
Hence, the temperature of solution in a beaker 2=5 degrees
7 0
1 year ago
Each digit 8 in the number 8.888 has a different value placed on its place in the place-value chart. Each 8 is multiplied by its
stich3 [128]

Answer:

The value of every digit in a decimal figure is given by its position in that figure.

Step-by-step explanation:

<em>The Rule:</em>

The value of every digit in a decimal figure is given by its position in that figure.

For the figure 8.888, from left to right,

The first 8 is in units

The second 8 is in tenth (this means 8/10 = 0.8)

The third 8 is in hundreth (this means 8/100 = 0.08)

The fourth 8 is in thousandth (this means 8/1000 = 0.008)

The sum of the place values of the digits after the decimal point = 0.888

when the unit 8 is added, you then get 8.888

6 0
3 years ago
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