Answer:
radius = 11
Step-by-step explanation:
The equation of a circle in general form is
x² + y² + 2gx + 2fy + c = 0
with radius = 
x² + y² - 20x + 14y + 28 = 0 ← is in general form
with 2g = - 20 ⇒ g = - 10
2f = 14 ⇒ f = 7 and c = 28, thus
radius = 
= 
= 
= 11
Answer:
12’ x 16’ = 6 in * 8 in
Step-by-step explanation:
Allow me to revise your question for a better understanding.
<em>Mr. avoid wants to build a doll house for his daughter that is proportional to their house you measure the living room of his house and it was 12’ x 16’ what will the dimensions of the doll house living room if every foot of the actual house equals 1/2 inch in the doll house </em>
My answer:
Given:
The living room of his house was 12’ x 16’ and this is the actual house
The dimensions of the doll house living room if every foot of the actual house equals 1/2 inch is:
<=> 1 foot = 1/2 inch
=> the dimensions of the doll house living room is:
12’ x 16’ = 6 inch * 8 inch
Answer:
C / (2 pi) = r
Step-by-step explanation:
C = 2 pi r
Divide each side by 2 pi
C / (2 pi) = 2 pi r/ (2 pi)
C / (2 pi) = r
Answer:
sir this isnt math
Step-by-step explanation:
put it in spanish next time
We notice a factor of 2x in both
2x(5x^2+4x-3)
trial and error
(5x-3)(x+1) yeilds 5x^2+2x-3, nope
(5x+3)(x-1) yeilds 5x^2-2x-3, nope
(5x-1)(x+3) yeilds 5x^2+14x-3, nope
(5x+1)(x-3) yeilds 5x^2-14x-3, nope
simplest form is
2x(5x^2+4x-3)
