Answer:
v = 72 km/h
Step-by-step explanation:
Given that,
The distance between school a and b is 360 km.
A bus leaves school a at 9:30 and reaches school b at 2:30
Total time, t = 5 hours
We know that, the speed of an object is equal to the total distance divided by total time taken.
So,
v = d/t
![v=\dfrac{360\ km}{5\h}\\\\v=72\ km/h](https://tex.z-dn.net/?f=v%3D%5Cdfrac%7B360%5C%20km%7D%7B5%5Ch%7D%5C%5C%5C%5Cv%3D72%5C%20km%2Fh)
So, the required speed is 72 km/h.
Multiply the amount of the sale by the commission rate:
8,000 x 0.20 = 1,600
He earned $1,600
Answer:225
Step-by-step explanation:
Answer:
(2,4)
Step-by-step explanation:
let z be x2,y2
then apply mid point formula
x=(x1+x2)/2
y=(y1+y2)/2
Answer:
The coefficient of the squared term in parabola is 1/9
Step-by-step explanation:
We have been given the vertex of the parabola is (2,-3)
The vertex form of a parabola is given by
![y=a(x-h)^2+k,\text{ where (h,k) is vertex}](https://tex.z-dn.net/?f=y%3Da%28x-h%29%5E2%2Bk%2C%5Ctext%7B%20where%20%28h%2Ck%29%20is%20vertex%7D)
On substituting the values, we get
![y=a(x-2)^2-3](https://tex.z-dn.net/?f=y%3Da%28x-2%29%5E2-3)
Now, when the y value is -2, the x value is 5. Hence, we have
![-2=a(5-2)^2-3](https://tex.z-dn.net/?f=-2%3Da%285-2%29%5E2-3)
![1=a(3)^2](https://tex.z-dn.net/?f=1%3Da%283%29%5E2)
![1=9a](https://tex.z-dn.net/?f=1%3D9a)
![a=\frac{1}{9}](https://tex.z-dn.net/?f=a%3D%5Cfrac%7B1%7D%7B9%7D)
Therefore, the coefficient of the squared term in parabola is 1/9