Answer:
x(1,2) = -5 ± √61) / (-2)
Step-by-step explanation:
The ABC formula of quadratic equation states
x(1,2) = (-b ± √b^2 - 4ac) / 2a
-x^2 + 5x + 9 = 0
a = -1
b = 5
c = 9
Thus x(1,2) = (-b ± √b^2 - 4ac) / 2a
= (-5 ± √(-5)^2 - 4*(-1)*9) / 2*(-1)
= (-5 ± √25+36) / (-2)
= (-5 ± √61) / (-2)
Answer:
cm.
Step-by-step explanation:
We have been given that the average human body cell is about
cm in diameter. The diameter of a plant cell is
cm.
To find the combined diameter of the body cell and plant cell, we will add both diameters.
First of all let us convert our given diameters in standard notation.
![5.1\times10^{-4}=0.00051](https://tex.z-dn.net/?f=5.1%5Ctimes10%5E%7B-4%7D%3D0.00051)
![8\times10^{-3}=0.008](https://tex.z-dn.net/?f=8%5Ctimes10%5E%7B-3%7D%3D0.008)
![\text{The combined diameter of body cell and plant cell}=0.00051+0.008](https://tex.z-dn.net/?f=%5Ctext%7BThe%20combined%20diameter%20of%20body%20cell%20and%20plant%20cell%7D%3D0.00051%2B0.008)
![\text{The combined diameter of body cell and plant cell}=0.00851](https://tex.z-dn.net/?f=%5Ctext%7BThe%20combined%20diameter%20of%20body%20cell%20and%20plant%20cell%7D%3D0.00851)
Let us convert our answer in scientific notation.
![\text{The combined diameter of body cell and plant cell}=8.51\times 10^{-3}](https://tex.z-dn.net/?f=%5Ctext%7BThe%20combined%20diameter%20of%20body%20cell%20and%20plant%20cell%7D%3D8.51%5Ctimes%2010%5E%7B-3%7D)
Therefore, the combined diameter of the body cell and plant cell is
cm.
Answer:
To me is a best freind is someone who has my back no matter what.
Step-by-step explanation:
Answer:
1) claire's stone at 1.25 seconds
2) 0.5 seconds and its max height was 9
3) lin at 8ft
Step-by-step explanation:
the intercepts tell you the first and third question and then the max height is the highest point on the graph
not sure what measurements you were supposed to use so I used seconds and feet and if that's not it then it's the same numbers just different words
Each neighbor gets 4 slices of pie.