Answer:
2/7
Step-by-step explanation:
There are 22 (12 + 10) total students in the class. That means that the chance of the first student picked being a girl is 12/22.
Now, we must calculate the chance of the next student to be picked <em>also </em>being a girl - however, there is a trap here! Remember that since a girl has been picked, the total student pool has decreased to 21 and and the total number of girls has decreased to 11. This means the new chance of girl being picked is 11/21.
To find the probability of both these events happening in conjunction, these fractions must be multiplied. 12/22 * 11/21 = 132/462, which simplifies to 2/7.
Answer:
The kit has 10 different colors of beads.
There are 10 beads of each color.
This means that we have 10*10 = 100 beads in total.
We know that she uses 5 beads in a project, and then to complete it she uses other 43 beads.
Then the total number of beads used is:
43 + 5 = 48 beads.
Then the remaining number of beads is:
100 - 48 = 52
Answer:
x=9
Step-by-step explanation:
distribute: 3x-6+7=2x+10
add like terms: 3x+1=2x+10
add the x's and the integers: x=9
