Answer:
7 to the 4 power
Step-by-step explanation
count the number of sevens there are and that the exponent.
Total number of marbles = 10
Number of red marbles = 4
Number of blue marbles = 6
Probability = 
The probability that the first marble is blue = 
The probability that the first marble is red =
; 9 because 1 marble has already been taken out.
Joint probability= probability of event A * Probability of event B
=
=
6a
So you would write the factored equation as 6a(b+2)
Answer:
x = 21
Step-by-step explanation:
3x - 4 = 2x + 17 because of alternate angles
3x - 2x = 17 + 4
x = 21