4050 ft is the total square footage of the house.
Answer:
Part 1) The y-intercept is the point 
Part 2) The x-intercepts are the points 
Step-by-step explanation:
we have

This is a vertical parabola open upward
step 1
Find the y-intercept
we know that
The y-intercept is the value of y when the value of x is equal to zero
so
For x=0


The y-intercept is the point (0,-3)
step 2
Find the x-intercepts
we know that
The x-intercept is the value of x when the value of y is equal to zero
so
For y=0

solve for x
Adds 3 both sides


take square root both sides

so
The x-intercepts are the points 
Answer:
These triangles are congruent by SAS
Step-by-step explanation:
They share the same angle which is in the same angle which is the vertical angle with congruent sides on either side of the angle, therefore this is congruent by SAS.
Answer:
7.7
Step-by-step explanation:
To find the intersection points of the line and the circle we have to set up a system with their equations and solve. The system would look like this:

To solve, substitute 1 for x in the second equation to get:

Solving, we get:

Therefore, the two points of intersection are
and
. The distance between these two points (the length of the chord in the circle) is
which is 7.745966692414... which is 7.7 rounded to the nearest tenth.
Hope this helps :)