Answer:
1000
Step-by-step explanation:
10milimeter=1 centimeter
100 centimeters=1 meter
10x100=1000
Let me know if im right :)
You're assuming that this data set represents all of Mrs. Hassaan's pupils. Certain students could be missing from the histogram - for instance, there could be one or two students who missed the test, but for certain reasons will be taking a make-up exam. Their grade would not be recording in this data set, but they still contribute to the class size, and so would be unaccounted for here.
Once the rock hits the ground, we know that its height will be equal to 0m
because of this, we can replace H(x) with 0
![40 - 4.9 {x}^{2} = 0](https://tex.z-dn.net/?f=40%20-%204.9%20%7Bx%7D%5E%7B2%7D%20%20%3D%200)
now all we have to do is get x by itself
so..
![4.9 {x}^{2} = 40](https://tex.z-dn.net/?f=4.9%20%7Bx%7D%5E%7B2%7D%20%20%3D%2040)
then
![{x}^{2} = 40 \div 4.9](https://tex.z-dn.net/?f=%20%7Bx%7D%5E%7B2%7D%20%20%3D%2040%20%5Cdiv%204.9)
![{x}^{2} = 8.1632...](https://tex.z-dn.net/?f=%20%7Bx%7D%5E%7B2%7D%20%20%3D%208.1632...)
now take the square root of each side
![x = 2.857...](https://tex.z-dn.net/?f=x%20%3D%202.857...)
2.857 seconds (rounded to the third decimal)
They have the same slope only the y intercept is different. They will never intercept.