Six times a number w is at least-24
1 answer:
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Answer:
Step-by-step explanation:
A) If AB is a diameter, Then ACB is a 90 degrees angle because In a semi-circle (AB is a diameter which divides the circle into 2 equal parts), the angle opposite to the diameter is of 90 degrees.
So, <ACB = 90 degrees
Then <a = 180-90-28
=> <a = 62 degrees
B) The opposite interior angles of a quadrilateral inscribed in a circle add up to 180 degrees.
So,
=> <a + <b = 180
=> <b = 180-62
=> <b = 118 degrees
Answer:
2
Step-by-step explanation:
Given the circle:
To determine the length of the radius, we complete the square.
Step 1: Subtract 4 from both sides
Step 2: Divide the coefficient of x and y by 2, square it and add it to both sides
Step 3: Factorize the Left Hand side and simplify the Right Hand side.
Comparing with the standard form of the equation of a circle
r=2
Therefore, the radius of the circle is 2.