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Rina8888 [55]
3 years ago
15

There are 5 students in class. each will be assigned a grade of a, b or

Mathematics
1 answer:
antiseptic1488 [7]3 years ago
8 0
There could be five in each class.
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A bag contains 1 red, 1 yellow, 1 blue, and 1 green marble. What is the probability of choosing a green marble, not replacing it
lys-0071 [83]

The probability for choosing green and red is \frac{1}{12}

<u>Solution:</u>

Given that , A bag contains 1 red, 1 yellow, 1 blue, and 1 green marble.

We have to find what is the probability of choosing a green marble, not replacing it, and then choosing a red marble?

Now, we know that,

\text { probability of an event }=\frac{\text { number of favourable outcomes }}{\text { total number of outcomes }}

So, total possible outcomes = 1 red + 1 yellow + 1 blue + 1 green = 4

\text { Now, probability for green marble }=\frac{1 \text { green marble }}{4 \text { marbles }}=\frac{1}{4}

And now, total outcomes will be only 3 as we are not replacing the picked marble.

\begin{array}{l}{\text { Then, probability for red marble }=\frac{1 \text { red marble }}{3 \text { marbles }}=\frac{1}{3}} \\\\ {\text { Then overall probability }=\frac{1}{4} \times \frac{1}{3}=\frac{1}{12}}\end{array}

Hence, the probability for choosing green and red is \frac{1}{12}

6 0
3 years ago
Read 2 more answers
3xy=9 is it direct variation or inverse variation or neither
steposvetlana [31]

3xy = 9


y =  \dfrac 9 {3x}


y  = \dfrac 3 x


y varies inversely with x


Answer: inverse variation



5 0
3 years ago
Shanice bought one star fruit for $2. How many star fruit can Mark buy if he has $20?
Karo-lina-s [1.5K]
Mark can  buy 10 star fruit because 2 times 10 equals 20.So,Shanice bought one star fruit for $2. How many star fruit can Mark buy if he has $20?He can buy 10 with $20.
6 0
3 years ago
Which statement is FALSE?
galina1969 [7]
The first one is incorrect. i’d pick that one.
7 0
2 years ago
Select all the common denominators for
Vitek1552 [10]

Answer:

B, E

Step-by-step explanation:

There are a few ways to check for common denominator.

Here is one method

Take the 4 and 10 and see if both numbers will  go into the numbers evenly. If they do, it is a common denominator

<u>Will 4 and 10 divide evenly into 10 ?</u>

4 will not go into 10 evenly

10 is not a common denominator.

<u>Will 4 and 10 divide evenly into 20?</u>

4 will go into 20 evenly. 20 /4 = 5

10 will go into 20 evenly 20 / 10 =  2

So 20 is a common denominator

<u>Will 4 and 10 divide evenly into 24?</u>

4 will go into 24 evenly 24 / 4 = 6

10 will not go into 24 evenly

24 is not a common denominator

<u>Will 4 and 10 divide evenly into 32?</u>

4 will go into 32 evenly 32 / 4 = 8

10 will not go into 32 evenly

32 is not a common denominator

<u>Will 4 and 10 divide evenly into 40?</u>

4 will go into 40 evenly 40/4 = 10

10 will go into 40 evenly 40 / 10 = 4

40 is a common denominator

3 0
2 years ago
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