Answer:
Part a) The independent quantity is the variable x (the number of hours) and the dependent quantity is the variable y (total paid)
Part b) Domain
Part c) Range
Step-by-step explanation:
Let
x------> the number of hours
y-----> total paid
The linear equation that represent this situation is
so
Part a)
The independent quantity is the variable x (the number of hours)
The dependent quantity is the variable y (total paid)
Part b) Find the domain
The domain is the interval-------->
All real numbers greater than or equal to hours and less than or equal to hours
Part c) Find the range
For
find the value of y
For
find the value of y
The range is the interval------->
All real numbers greater than or equal to and less than or equal to
a)
x+y2=14
⟹y2=14−x
⟹y=±14−x−−−−−√
Let’s say we plug in x=5
, we will get y=±3
The definition of a function says that one input must give us at most one output. This tells us that from this equation we cannot have y
as a function of x
.
b)
x3−y3=27
⟹y3=x3−27
⟹y=x3–27−−−−−√3
The cube root function gives us one output per input. As a consequence of the previous statement and using the definition of function we can say that from this equation we can write y
as a function of x
.
Answer:
1.55s
Step-by-step explanation:
The height equation of the projectile is given as;
h = -16t^2 + vt + s .......1
where;
t is the time in seconds,
v is the upward velocity at the start,
s is the starting height.
Given;
v = 70 ft/s
s = 5 ft
Substituting the values equation 1 becomes;
h = -16t^2 + 70t + 5
For the ball to reach 75 ft, h = 0
75 = -16t^2 + 70t + 5
-16t^2 + 70t + 5 - 75 = 0
-16t^2 + 70t - 70 = 0
solving the quadratic equation;
Time t = 2.83 s and t = 1.55s
Therefore, the ball will first reach 75 ft after 1.55 seconds.
Answer:
Step-by-step explanation:
The answer is six.