Choice A. <span>14/81
</span>Possible outcomes = total number of marbles = 18
P (1st blue) = 8/18 = 4/9
P (2nd red with replacement of blue) = 7/18
P (both) = (4/9) * (7/18) = 28/162 = 14/81
Choice B. 7/18
Possible outcomes = total number of marbles = 18
<span>P (1st black) = 3/18 = 1/6 </span>
<span>P (2nd red with replacement of black) = 7/18 </span>
<span>P (both) = (1/6) * (7/18) = 7/108</span>
2/21= 1/7 that's in simplest form
Answer:
x = 20
Step-by-step explanation:
Perimeter = Sum of all sides
Perimeter = (x+4)+(4x)+10x-(10)
Where Perimeter = 294 in.
294 = 15x-6
15x = 294+6
15x = 300
Dividing both sides by 15
=> x = 20