What is the radius of the circle whose equation is x^2 + y^2 = 8?
2 answers:
Answer:
2√2
Step-by-step explanation:
To write the equation of a circle, use the formula where the center of the circle is (h, k).
This means the equation is has
. This means the radius is √8 = 2√2.
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Answer:
Step-by-step explanation:
The point slope form of a line is where
. We write
Convert point slope form to slope intercept form by simplifying and rearranging.
Answer:
see attached for diagram
a) √13
b) √29
c) 4
Step-by-step explanation:
Equation of the circle:
⇒ center = (-1, 3)
⇒ radius = √16 = 4
Distance between 2 points formula:
a) let (-1, 3) =
let (2, 1) =
b) let (-1, 3) =
let (4, 1) =
c) let (-1, 3) =
let (3, 3) =
Answer:
<em>In the next year, Anthony worked 2,084 hours</em>
Step-by-step explanation:
Anthony worked 1,697 hours in 2010.
We also know Anthony worked 22.8% more hours than in 2010.
The problem requires to calculate how much did Anthony work in the next year.
It can be calculated as follows:
Take 22.8% of 1,697:
Now calculate by adding it to the original number of hours:
1,697 + 387 = 2,084 hours
In the next year, Anthony worked 2,084 hours