Step-by-step explanation:
1) i will asume x2 and z2 are squares here.
ok, here we only have restrictions to x and z, so y can take all the values in R.
is a circle of radius 6, you can see this if for example we set z = 0, then x goes from -6 to 6, the same if we set x = 0 then z goes from -6 to 6.
and the equation 
describes a circle.
So here, the region is the solid cylinder of radius 6, where the Y axis is also the axis of the cylinder.
2) you tipped the same inequality but different numbers in the right side, here i think you are saying that the inequalities describes the set of all points whose distance from the y-axis is equal or less tan 6.
Answer:
x = -7
Step-by-step explanation:
Given parameters:
Slope of the line = 
Coordinates = (5,x) and (2,-3)
Unknown:
X= ?
Solution:
To find slope, use the expression below;
Slope = 
y₂ = -3 y₁ = x
x₂ = 2 x₁ = 5
= 
3(-3-x) = 4(-3)
-9 -3x = 12
-3x = 21
x = -7
Guessing this is a combined work problem??? You forgot to post the question. I can solve for the time it takes them to complete the house together..
1/3 + 1/5 = 1/t
5/15 + 3/15 = 1/t
8/15 = 1/t
15/8 = t
1.875 hrs
I would say that a reasonable estimate of the height of door is 6.5 feet, or 2 meters.
