Answer:
Let R be the greater radius and r be the smaller radius
A) Area of the sidewalk = R^2 - r^2 - This can be the expression
B) = 3.14
=(R^2-r^2)
=(11^2-9^2)
=(121-81)
=*40
That was the simplified expression
Answer = 3.14 * 40 = 125.6m^2
Step-by-step explanation:
Answer:
The scale factor is .625 is false The scale factor 1.6 is true
Step-by-step explanation:
Since the triangle gets bigger the multiplication factor needs to be more than one to make the end result bigger
Answer: The Answer is D.
Step-by-step explanation: IT is D because a FUNCTION DOES NOT suppose to hit more than 1 point. You can also use the vertical line test meaning take a pencil or pen hold it up and down and drag it across you screen or paper, and if it hits more than 1 point it is NOT a FUNCTION. Plus rate the Brainlest
<h3>
Answer: a = -3 and b = 5</h3>
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Work Shown:
Multiply top and bottom by 
to rationalize the denominator
We end up with something in the form 
where a = -3 and b = 5
