Answer:
x=11
Step-by-step explanation:
7x-9-4(x-1)=28
7x-9-4x+4=28
3x-5=28
3x=33
x=11
Answer:

Step-by-step explanation:
Given
Shape: Circle
Required
The area and the circumference (relationship)
This implies that, we write an expression that relates the area and the circumference.
Circumference is calculated as:

Area is calculated as:

The area can be rewritten as:

Further rewrite as:

Recall that:
So, the expression becomes


Answer:x = -8
Step-by-step explanation:
Answer:
when (1.2) is substituted into the second equation the equation is true
Step-by-step explanation:
further you substitute x and the then solve
This is what the diagram is saying
(-4)+(-9)= -13