Angle a = 39°
Angle c = 123°
The measure of angle b.
∠ b = 18°
We know that,
➪ ∠ a + ∠ b + ∠ c = 180°
➪ 39° + ∠ b + 123° = 180°
➪ ∠ b + 162° = 180°
➪ ∠ b = 180° - 162°
➪ ∠ b = 18°
Therefore, the measure of ∠ b is 18°.
∠ a + ∠ b + ∠ c = 180°
✒ 39° + 18° + 123° = 180°
✒ 180° = 180°
✒ L. H. S. = R. H. S.
Answer:
see explanation
Step-by-step explanation:
Under a reflection in the y- axis
a point (x, y ) → (- x, y ) , thus
A(4, - 1 ) → A'(- 4, - 1 )
B(3, - 3 ) → B'(- 3, - 3 )
C(0, 2 ) → C'(0, 2 )
Circumference = 2 x pi x radius
27 in = 2 x 3.14 x radius
Solve for the radius
Using the Quadratic Function, Such Means x = - b + or - the square root of - 4 a c over 2 a.
After you do it you would get the answer :
Hoped I Helped, Have A Great Day :)
