Answer:
b = 22
Step-by-step explanation:
3b-16=50
3b = 66
b = 22
The equation of the tangent line can be found using slope formula and fact that slope = dy/dx.

where (x0,y0) is point A ---> (0,-1)
Then rearrange equation into slope-intercept form:

Finally sub in x=0 into dy/dx to get slope at the point (0,-1)
Answer:
39°
Step-by-step explanation:
A radius of a circle (segment CD) drawn to the point of tangency (D) intersects the tangent (line DE) at a 90-deg angle.
That makes m<D = 90.
m<D + m<C + m<E = 180
90 + 51 + m<E = 180
m<E = 39
If I did the math right the answer should be 1,750
Answer:
Step-by-step explanation:
x + 10 = 3(x + 4)
x + 10 = 3x + 12
10 - 12 = 3x - x
- 2 = 2x
x = - 1