Answer:
0.4
Step-by-step explanation:
n × 0.2=0.08
n = 0.08÷0.2
n = 0.4
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:
![3+90\cdot t -16\cdot t^{2} = 84](https://tex.z-dn.net/?f=3%2B90%5Ccdot%20t%20-16%5Ccdot%20t%5E%7B2%7D%20%3D%2084)
(1)
By Quadratic Formula:
![t_{1,2} = \frac{90\pm \sqrt{(-90)^{2}-4\cdot (16)\cdot (81)}}{2\cdot (16)}](https://tex.z-dn.net/?f=t_%7B1%2C2%7D%20%3D%20%5Cfrac%7B90%5Cpm%20%5Csqrt%7B%28-90%29%5E%7B2%7D-4%5Ccdot%20%2816%29%5Ccdot%20%2881%29%7D%7D%7B2%5Ccdot%20%2816%29%7D)
,
The ball will be 84 feet above the ground 1.125 seconds and 4.5 seconds after launch.
Answer:
3.1%, dependent event
Step-by-step explanation:
We have that vowel are 5, it is from A, E, I, O, U therefore the probability of drawing a vowel is:
5/26
since there are a total of 26 options to choose from. Then, when selecting that, we are left with 25 options and 4 vowels, therefore the probability would be:
4/25
Therefore the final probability is:
5/26 * (4/25) = 0.031
In other words, selecting a vowel and then another (without replacement) the probability is 3.1%
The events are dependent, since the first event affects the second event, since the number of vowels and the number of total options are reduced.
The total amount Allen will need to pay for the video game is $48.96 as 49-0.1+0.06=48.96
Answer:
i believe it is (3,6) im not 100% sure though
Step-by-step explanation: