Check the picture below.
so it hits the ground when y = 0, thus
since "t" is seconds it took, it can't be a negative amount.
For the first question, the answer is A. You take 90 and multiply it by 3, then you get the time that it takes for one worker to mow the large park.
For the second question, you take 50 = k/0.25. To find k, you would want to multiply both sides with 0.25 to cancel the 0.25 on k's side. 50 times 0.25 is 12.5. I think C is your answer although I'm not really confident.
Answer:
64.60% probability that all are able to solve the problem
Step-by-step explanation:
We have these following probabilities:
A 95% probability that the first student solves the problem.
An 85% probability that the second student solves the problem.
An 80% probability that the third student solves the problem.
What is the probability that all are able to solve the problem
The probabilities are independent, so we can just multiply them
0.95*0.85*0.8 = 0.646
64.60% probability that all are able to solve the problem
Your answer is going to be <span>133.333333333. Unless you decide to round it.</span>
