The picture in the attached figure
we know that
The Intersecting Secants Theorem, states that
''If two secant segments are drawn to a circle from an exterior point, then the product of the measures of one secant segment and its external secant segment is equal to the product of the measures of the other secant segment and its external secant segment''
so
in this problem
(x+DC)*DC=(AB+BC)*BC
AB=42
BC=18
CD=4
(x+4)*4=(42+18)*18
4x+16=1080
4x=1080-16
x=1064/4
x=266
the answer isx=266
Answer:
Step-by-step explanation:
Given
z=119+120 i
Let 
Squaring both sides

Comparing real and imaginary part
Re(LHS)=Re(RHS)
-----------1
comparing Im(LHS)=Im(RHS)
120=2pq

Substitute q in 1


Let 



we take only Positive value because 
x=149.85

thus 

thus 
Step-by-step explanation:
19 + 73 + 90 = 182
182 - 180 = 2