Answer:
Step-by-step explanation:
Total number of balls =
Let S be the sample space.
Then, n(S) = Number of ways of drawing 2 balls out of 7
= ⁷ C₂
=
=21
Let E = Event of drawing 2 balls, none of which is blue.
∴n(E)= Number of ways of drawing 2 balls out of (2 + 3) balls.
= ⁵ C₂
=
= 10
∴ P (E) =
The answer is D for this problem. Btw u can use a site called deez
$30 is your constant
Months would be your independent variable
Total cost would be dependent
Therefore, your total cost would “depend” on the number of months “independent” times your constant of 30
9514 1404 393
Answer:
14
Step-by-step explanation:
Assuming the grade is proportional to the number of problems answered, we have ...
a/20 = 70/100
a = 20(0.70) = 14 . . . . multiply by 20
The student answered 14 problems correctly.