Answer:
x = 4 and y = 1
Step-by-step explanation:
4x - y = 15
2x + y = 9
Isolate x --
4x - y = 15 (add y to both sides)
4x = 15 + y (divide both sides by 4)
(Simplify)
x =
Substitute x = 15 + y/ 4 in the other equation
2 * 15 + y/ 4 + y = 9 (simplify)
15 + 3y/ 2 = 9 (simplify)
y = 1 and x = 4
HOPE THIS HELPS YA!!
Answer:
or
Step-by-step explanation:
we know that
The general equation of a horizontal parabola open to the left is equal to
where
(h,k) is the vertex of the parabola
p is the focal distance (distance from the vertex to the focus)
In this problem we have
The vertex is the point (2,-4)
so
The Focus is the point F(1,-4)
so
the focal distance p=2-1=1 ---> distance from the vertex to the focus
substitute in the formula
Answer: 2.5 ft
Step-by-step explanation:
The volume of a rectangular prism is given by the following formula:
(1)
Where:
is the length of the base
is the width of the base
is the height of the prism
On the other hand, tha area of a rectangle is:
(2)
Then, we can rewrite (1) in terms of (2):
(3)
Now, we know the value of the volume and the area of the base:
Substituting these values in (3):
(4)
Isolating :
This is the height of the truck
