Answer:
![y = - \frac{13}{9} + \frac{4}{9} x](https://tex.z-dn.net/?f=y%20%3D%20%20-%20%20%5Cfrac%7B13%7D%7B9%7D%20%20%2B%20%20%5Cfrac%7B4%7D%7B9%7D%20x)
Step-by-step explanation:
![4x - 9y = 13](https://tex.z-dn.net/?f=4x%20-%209y%20%3D%2013)
![4x - 9y - 4x = 13 - 4x](https://tex.z-dn.net/?f=4x%20-%209y%20-%204x%20%3D%2013%20-%204x)
![- 9y = 13 - 4x](https://tex.z-dn.net/?f=%20-%209y%20%3D%2013%20-%204x)
![y = 9y \div (9) = (13 - 4x) \div ( - 9)](https://tex.z-dn.net/?f=y%20%3D%209y%20%5Cdiv%20%289%29%20%3D%20%2813%20-%204x%29%20%5Cdiv%20%28%20-%209%29)
![y = (13 - 4x) \div( - 9)](https://tex.z-dn.net/?f=y%20%3D%20%2813%20-%204x%29%20%5Cdiv%28%20-%209%29)
![y = 13 \div ( - 9) - 4x \div ( - 9)](https://tex.z-dn.net/?f=y%20%3D%2013%20%5Cdiv%20%28%20-%209%29%20-%204x%20%5Cdiv%20%28%20-%209%29)
![y = - 13 \div 9 - 4x \div ( - 9)](https://tex.z-dn.net/?f=y%20%3D%20%20-%2013%20%5Cdiv%209%20-%204x%20%5Cdiv%20%28%20-%209%29)
![y = - \frac{13}{9} - 4x \div ( - 9)](https://tex.z-dn.net/?f=y%20%3D%20%20-%20%20%5Cfrac%7B13%7D%7B9%7D%20%20-%204x%20%5Cdiv%20%28%20-%209%29)
![y = - \frac{13}{9} + 4x \div 9](https://tex.z-dn.net/?f=y%20%3D%20%20-%20%20%5Cfrac%7B13%7D%7B9%7D%20%20%2B%204x%20%5Cdiv%209)
![\boxed{\green{y = - \frac{13}{9} + \frac{4}{9} x, x E R}}](https://tex.z-dn.net/?f=%5Cboxed%7B%5Cgreen%7By%20%3D%20%20-%20%20%5Cfrac%7B13%7D%7B9%7D%20%20%2B%20%20%5Cfrac%7B4%7D%7B9%7D%20x%2C%20x%20E%20R%7D%7D)
Answer:
9
Step-by-step explanation:
The mean squared error (MSE)of a set of observations can be calculated using the formula :
(1/n)Σ(Actual values - predicted values)^2
Where n = number of observations
Steps :
Error values of each observation (difference between actual and predicted values) is squared.
Step 2:
The squared values are summed
Step 3:
The summation is the divided by the number of observations
The difference between the actual and predicted values is known as the ERROR.
(1/n)Σ(ERROR)^2
n = 3
Error = +3, +3, - 3
MSE = (1/3)Σ[(3)^2 + (3)^2 + (-3)^2]
MSE = (1/3) × [9 + 9 + 9]
MSE = (1/3) × 27
MSE = 9
Answer:
D-both a relation and a function
Step-by-step explanation:
5 feet is 60 inches. The other side with the two lines is also 17.2 in. The two sides with only one line will each be (60 - 17.2 - 17.2) / 2, because they're equal. That will make both sides with the one mark 25.6 / 2, or 12.8 in.
You can't find the area unless you have the angle of the vertices or the height.
Start with which equations are written in function notation?
The only ones are the first and last, not the “y=“ ones.
Then look at the equations.
h(x) = x^2 would be a parabola, so the range wouldn’t be all real numbers. It’d only be non-negative numbers.
g(x) = 1/2 x + 3/2 would be a line. This has a range of all real numbers.