10. ×3+2
11. couldnt figure it out sorry
Answer:
The independent variable is the variable being controlled in the problem, and the dependent variable is the variable that changes because of this control.
Step-by-step explanation:
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:
y= 30 x=15
set up your proportions for example 9/6 to y/20 and 9/6 to x/10 and then cross multiply
