Answer:
A≈28.27
Step-by-step explanation:
Its the first one. I typed them all in my graphing calculator to check
Answer:
Hey,
so first off we need to know our equation for the area of a circle;
A=πr2
So know we plug in what we already know,
sense the diamiter we can figure out the radius (half way across) by simply dividing 18 units by 2 which is 9.
Now we have
A=π9²
That is your answer π9²
You want to isolate x.
First, lets move 8.60 to th other side:
40 + 8.60 = 7.25x => 48.60 = 7.25x
Now, divide left and right by 7.25
48.60/7.25 = 7.25x/7.25 => x ≈ 6.7 (rounded)
Tip: throw the equation in wolfram alpha.
I'm sure you can work out the other one.
The students would show no regard for the money being spent because it is not their money
