Answer: x = -3
Step-by-step explanation:
5 - 4x = 17
Solve:
-4x = 17 - 5
-4x = 12
x = 12/(-4)
x = -3
Therefore, the answer is -3.
Answer:
49.3 ft
Step-by-step explanation:
Using the tangent ratio in the right triangle
tan48° =
=
( multiply both sides by 30 )
30 × tan48° = x , then
x ≈ 33.3
Height of tower = 33.3 + 16 = 49.3 ft ( to the nearest tenth )
Answer:
The vertex is: 
Step-by-step explanation:
First solve the equation for the variable y

Add 4y on both sides of the equation


Notice that now the equation has the general form of a parabola

In this case

Add
and subtract
on the right side of the equation


Factor the expression that is inside the parentheses

Divide both sides of the equality between 4


For an equation of the form

the vertex is: (h, k)
In this case

the vertex is: 