Answer:
-10
Step-by-step explanation:
x+75=180-(x+125)
2x=-20
x=-10
Answer:
The cubic regression that fits the points
,
,
and
is
.
Step-by-step explanation:
A cubic polynomial is a polynomial that has the following form:
(1)
Where:
- Independent variable, dimensionless.
- Dependent variable, dimensionless.
,
,
,
- Coefficients, dimensionless.
We construct the following system of equations to determine the coefficients of the cubic regression:

(1)

(2)

(3)

(4)
The solution of the system of linear equations is:
,
,
, 
The cubic regression that fits the points
,
,
and
is
.
Answer:
x + 49 + 28 = 180
Step-by-step explanation:
The angle adjacent to x on the left is vertically opposite 49° and is congruent.
The 3 angles then lie on a straight line and sum to 180° , that is
x + 49 + 28 = 180
The answer is True.
Since we are talking about the cost of something, and whenever you have a y-intercept, it means the price.
The y-intercept represents the initial cost of the taxi ride then how many miles you ride for, the more you pay plus the initial cost.
Best of Luck!
Answer:
there are 80 students
Step-by-step explanation: