3-in plus 1.5-out every minute means a net gain of 1.5 per minute. You need to fill (12 - 3) = 9 gallons. At 1.5 per minute, it takes 9/1.5 = 6 minutes if the drain and the faucet arr both open, but only (9/3)=3 minutes if you close the drain while you fill the tub.
It should be noted that the probability that a student will earn at least one 5 will be 0.3152.
<h3>How to calculate the probability</h3>
Test P(x). P(at least one 5)
1. 0.4. 0.2
2. 0.45. 0.36
3. 0.15. 0.488
Therefore, the probability that a student in the AP curriculum will earn at least one 5 will be:
= (0.4 × 0.2) + (0.45 × 0.36) + (0.15 × 0.488)
= 0.3152
In conclusion, the correct option is 0.3152.
Learn more about probability on:
brainly.com/question/24756209
K=2 is the correct answer
The y-intercepts are points where the graph of a function or an equation crosses or “touches” the y-axis of the Cartesian Plane.
The coefficients are 5 and 7. C and M are the variables.
