The measure of angle 3 is 90
The slope-intercept form:

The formula of a slope:

We have the points (-4, 47) and (2, -16). Substitute:

Therefore we have:

Put the coordinates of the point (2, -16) to the equation:

Answer: 
Answer:
- x² + 11x - 28
Step-by-step explanation:
y = - (x - 4)(x - 7) ← expand factors using FOIL
= - (x² - 11x + 28) ← distribute parenthesis by - 1
y = - x² + 11x - 28 ← in standard form
Given a function f(x,y), the differential of f is given by

where

is the derivative of f(x,y) with respect to x, while

is the derivative of f(x,y) with respect to y.
The function of our problem is

The derivative in x is

The derivative in y is

So, the differential of f(x,y) is
Answer:
the area of Green band is
.
Step-by-step explanation:
Given:
side length of yellow square = x in
Length of the green square = 
We need to find the area of the green band.
Solution:
First we will find the area of Yellow square.
area of Yellow square is equal to square of the side length.
framing in equation form we get;
area of Yellow square = 
Area of the whole square = 
Now to find the area of the green square we will subtract area of Yellow square from Area of the whole square.
framing in equation form we get;
area of the green square = 
Hence the area of Green band is
.