Answer:
120 miles
Step-by-step explanation:
Formulate equations.
Distance = rate * time.
D1 = distance from home to airport
D2 = distance from airport to off
D1 + D2 = 150
30 x t1 + 60 x t2 = 150
Divide through by 30
t1 + 2t2 = 5 ----- equation 1
Entire trip took 3 hours
t1 + t2 = 3 -------------------- equation 2
Solve equation 1 and 2 and you get
t1 = 1 hour
t2 = 2 hour
D2 = t2 x speed = 2 x 60
= 120 miles.
Answer:
-2x+8
Step-by-step explanation:
-2(x-4)
Distribute
-2*x -2*-4
-2x+8
Answer:
<em>octagon</em>
<em>is </em><em>the</em><em> correct</em><em> answer</em><em> of</em><em> </em><em>this</em><em> </em><em>question</em>
<em>it </em><em>has </em><em>eight</em><em> </em><em>side</em>
<em>hope</em><em> it</em><em> helps</em>
Let the number be x.
6*x - 8 = 34
6x - 8 = 34
6x = 34 + 8
6x = 42
x = 42/6
x = 7.
Let the number be y.
y/2
y/2 + 16 = 20
y/2 = 20 - 16
y/2 = 4
y = 2*4
y = 8.
Answer:
- none
- none
- x ≥ 4
Step-by-step explanation:
The restrictions placed on the independent variable in a function are those necessary to ensure that the function is defined for all allowed values of that variable.
In the graphs of problems 1) and 2), we see that the functions are defined for all values of x, so there are no restrictions.
__
3. For the function ...

the value under the radical cannot be negative. The square root function is not defined for negative values, so the restriction is ...
x -4 ≥ 0
x ≥ 4 . . . . . . . add 4 to both sides of the inequality