Answer
A = C2 / (4 π) for the first question. C = 2*π*square root of (A/π). for the second question.
Step-by-step explanation:
The area of a circle is given by the formula A = π r2, where A is the area and r is the radius. The circumference of a circle is C = 2 π r.
If we "solve for r" in the second equation, we have r = C / (2 π ). Now we use this to replace r in the first equation: A = π [ C / (2 π ) ]2.
When we simplify this, we get A = C2 / (4 π).
Now you can put your value of C into this equation and find A.
Answer:
Step-by-step explanation:
The vertex form of an equation of a parabola:
(h, k) - vertex
We have
We must use the formula:
Use the distributive formula a(b + c) = ab + ac
Answer:
D. Even and shifts downwards
Explanation:
When a number outside of the parentheses effect the function, it is considered the y.
So, the -4 would cause the function to shift downwards 4 units.
However, it would change the even and odd because you would have to place a negative sign in front of the x.
If I understand the question correctly, you can have the same amount of change be two different percentages by having 4 quarters and 100 pennies.
Each quarter is 25%
Each penny is 1%
(am i explaining this right)
Answer:
79.6
Step-by-step explanation:
4 3/5+15÷1/5
23/5+15÷1/5
4.6+15÷0.2
4.6+75
79.6