Answer: 14
Step-by-step explanation:
![95-3^4](https://tex.z-dn.net/?f=95-3%5E4)
![=95-81](https://tex.z-dn.net/?f=%3D95-81)
![=14](https://tex.z-dn.net/?f=%3D14)
Answer:
c=Px−5x4−7x3+2x2+3x
Step-by-step explanation:
Solve for
c
by simplifying both sides of the equation, then isolating the variable.
5 units is L'L ( I took the quiz and got it right)
1. D - Since it's random, everyone has an equal chance of being picked
2. B - Since the people are already registered voters it would be easier to get a response from them. Plus, picking ever 10th person makes it random.
3. false - a fair question wouldn't make assumptions about the population
4. B - "Don't you think" causes the answerer to be pushed towards saying yes
hope this helps :)
Answer:
3.8 seconds
Step-by-step explanation:
Given equation
![h= -16t^2 + 60t + 5](https://tex.z-dn.net/?f=h%3D%20-16t%5E2%20%2B%2060t%20%2B%205)
When the ball hits the ground then height is 0
So we replace h with 0 and solve for t
![0= -16t^2 + 60t + 5](https://tex.z-dn.net/?f=0%3D%20-16t%5E2%20%2B%2060t%20%2B%205)
a= -16 , b= 60 and c= 5
Apply quadratic formula to solve for t
![t=\frac{-b\pm \sqrt{b^2-4ac}}{2a}](https://tex.z-dn.net/?f=t%3D%5Cfrac%7B-b%5Cpm%20%5Csqrt%7Bb%5E2-4ac%7D%7D%7B2a%7D)
=![\frac{-60+\sqrt{60^2-4\left(-16\right)\cdot \:5}}{2\left(-16\right)}[/tex[tex]=\frac{-60+-\sqrt{3920}}{-32}](https://tex.z-dn.net/?f=%5Cfrac%7B-60%2B%5Csqrt%7B60%5E2-4%5Cleft%28-16%5Cright%29%5Ccdot%20%5C%3A5%7D%7D%7B2%5Cleft%28-16%5Cright%29%7D%5B%2Ftex%3C%2Fp%3E%3Cp%3E%5Btex%5D%3D%5Cfrac%7B-60%2B-%5Csqrt%7B3920%7D%7D%7B-32%7D)
![=\frac{-60+-28\sqrt{5}}{-32}](https://tex.z-dn.net/?f=%3D%5Cfrac%7B-60%2B-28%5Csqrt%7B5%7D%7D%7B-32%7D)
![=\frac{4(-15+-7\sqrt{5})}{-32}](https://tex.z-dn.net/?f=%3D%5Cfrac%7B4%28-15%2B-7%5Csqrt%7B5%7D%29%7D%7B-32%7D)
![=\frac{(-15+-7\sqrt{5})}{-8}](https://tex.z-dn.net/?f=%3D%5Cfrac%7B%28-15%2B-7%5Csqrt%7B5%7D%29%7D%7B-8%7D)
Now make two fractions and solve for x
t=
=-0.0815
t=
=3.83
So answer is 3.8 seconds