Answer:
.25 dollars
Step-by-step explanation:
divide everything by 4 to get .25
1/42
First, find the probability of Willie winning the grand prize. He has 1 ticket out of the 7 total tickets, so the probability is 1/7.
Now, find the probability of Emily winning the second prize. After the grand prize winner has been announced, there are only 6 tickets left. Emily has 1, so the probability is 1/6.
Finally, multiply the two probabilities together to find the probability that they will both happen together. To multiply fractions, multiply the numerators together and multiply the denominators together. This leaves us with (1 * 1) / (7 * 6), which is easy to simplify to 1/42, which is the final probability.
Answer:
Pi is equal to 3.14...
it is ratio of a circle's circumference to its diameter.
If you use the common denominator of .5 for both sides of the ratio, you will arrive at 3:5 as a simplified form.
Answer: The sensor will read 300 liters after 5 minutes.
The sensor sensor should have read 120 liters at time -7 minutes.
Step-by-step explanation:
Given: The amount of water detected by sensor initially= 225 litres
Since, the hose fills the aquarium at a constant rate of 15 liters per minute.
Let x be the time , and y be reading of sensor then
Therefore, the sensor reads after 5 minutes (put x=5 in the equation)= 
To find the sensor read at time -7 minutes put x=-7 in the equation, we get
Hence, the sensor should have read 120 liters at time -7 minutes.
