3.5(2h+4.5)=57.75
7h+15.75=57.75
7h=57.75-15.75
7h=42
h=42/7
h=6
Answer:

Step-by-step explanation:
Given

Required
Find 

In trigonometry:
If sin(A) = cos(B), then

So, we have:

Collect Like Terms



Answer:
C. All of the above
Step-by-step explanation:
The given ordered pair is not the solution to the equation
Step-by-step explanation:
In order to find if an ordered pair is a solution to the equation or not, we plug in the values of x and y in the equation. If the equation is true for the point then the ordered pair is the solution to the equation.
Given equation is:

Putting x=-1, y=15

The given ordered pair is not the solution to the equation
Keywords: Equations, ordered pairs
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Answer: Either
or 
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Explanation:
w = width
w-4 = length since it is 4 less than the width
Multiply the length and width to get the area of the rectangle.
area = length*width
area = 
area = 
area = 
In the last step, I used the distributive property.
Either expression mentioned above is valid for the area. If you had to pick only one, I'd go for 