Write a numerical expression for the verbal expression. the quotient of thirty-two and four divided by the sum of one and three
1 answer:
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Answer:
The ball will be 84 feet above the ground 1.125 seconds and 4.5 seconds after launch.
Step-by-step explanation:
Statement is incorrect. Correct form is presented below:
<em>The height </em><em> of an ball that is thrown straight upward from an initial position 3 feet off the ground with initial velocity of 90 feet per second is given by equation </em>
<em>, where </em>
<em> is time in seconds. After how many seconds will the ball be 84 feet above the ground. </em>
We equalize the kinematic formula to 84 feet and solve the resulting second-order polynomial by Quadratic Formula to determine the instants associated with such height:
(1)
By Quadratic Formula:
,
The ball will be 84 feet above the ground 1.125 seconds and 4.5 seconds after launch.
Answer:
The required probability is 0.5
Step-by-step explanation:
Consider the provided information.
A manager of an apartment store reports that the time of a customer on the second floor must wait for the elevator has a uniform distribution ranging from 2 to 4 minutes. it takes the elevator 30 seconds to go from floor to floor.
Let x denotes the waiting time.
It is given that waiting time is uniformly distributed from 2 to 4.
It is given that it takes 30 seconds to go from floor to floor.
Convert 30 seconds into minutes: min
Time to reach first floor is uniformly distributed:
We need to determine the probability that a hurried customer can reach the first floor in less than 3.5 minutes after pushing the elevator button on the second floor."
So we need to find
Hence, the required probability is 0.5