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:
A
Step-by-step explanation:
The value that could me added to 2/5 that could make the sum greater than 1/2 is 1/5 possibly. Hope this helps! :)
<h2>-CloutAnswers</h2>
Answer:
53.3%
Step-by-step explanation:
80/150=160/300
160/300=53.33/100
The decrease in calories is 53.3%
Let Sam be (S+8) years while his sister is S years.
S(S+8) = 105
S^2+8S-105 = 0
(S+15)(S-7) = 0
Sam’s sister is 7 years and Sam is 15 years old.