Answer:
all of the above A, B, and C are correct.
Step-by-step explanation:
4 + 2h < -3
2h < -7
h < -3.5
x ∈ (-∞, -3.5)
Answer:
y = x for x ≥ 0 and y = - x for x < 0
Step-by-step explanation:
The absolute value function is written as y = |x| and it is defined as following
|x| = x when, x ≥ 0 and |x| = - x when, x < 0.
Therefore, the equations for the domain of x ≥ 0 is y = x
and the equation for the domain of x < 0 is y = - x (Answer)
Answer:
Step-by-step explanation:
we know that
To find how many people live in that city multiply the population density by the area of the city
so
You are given an expression for y, so put that expression where y is in the first equation.
... 12x -5(x+4) = -20 . . . . . x+4 substituted for y
... 12x -5x -20 = -20 . . . . eliminate parentheses
... 7x = 0 . . . . . . . . . . . . . . collect terms, add 20
... x = 0 . . . . . . . . . . . . . . divide by 7
... y = x +4 = 0 +4 = 4 . . . put the value of x into the expression for y
The solution is x=0, y=4.