Given the center
and the radius
of a circle, its equation is

In your case, the center is (-4,0), and the radius is 2. Plug these values into the generic formula and you'll get the equation.
Yes, it’s D because you would have want to compare both fractions by making them have the same denominator. Since 60 is the least common denominator for 10 and 12 (the denominators), you would convert the fractions by multiplying the numerator and denominator of 5/10 by 6 to get 60. 5/10 would turn into 30/60. Then you would multiply 6/12 both by 5, and then it would turn into 30/60. Now that you have equal fractions, you can guess that they are the same. Therefore, 30/60=30/60! An easier way of doing it would be just simplifying them into 1/2 and comparing them + seeing that they are both 1/2. Hope this helps!
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Caramelatte
Brigitte is shorter than 5 feet. (Brigitte's height=h)
We write this in inequality form
Brigitte's height is h
So 'h' is shorter than 5 feet
Shorter means less than so we use < symbol. We should not use = symbol because height is shorter than 5 not equal to 5.
Suppose if it is given ' height is more than 5 feet ' then we use greater than symbol (>)
h is less than 5 feet
h < 5
Inequality is h < 5