See the picture attached to better understand the problem
we know that
C is the center of the circle
CR=CS-----> is the radius of the circle
CR and AB are perpendicular
the triangle SCR is a isosceles triangle
angle SCR is equal to 80°------> is a central angle
angle CSR and angle CRS are equal to 50°----> because 80+50+50=180
therefore
m∠SRA=90°-m∠CRS------> m∠SRA=90°-50°=40°
the answer ism∠SRA=40°
18. The shape is only shifted to a different location and orientation but remains the same size so this is congruent.
19 and 20 are both scaled to a different size so they are both similar.
40/x=100/190 40/x=100/190
(40/x)*x=(100/190)*x
40=0.526315789474*x
(0.56315789474) to get x
40/0.536315789474=x
76=x
x=76 now we have 190% of 76
You would add the 30 to the 40 And then add 45 to that and you will get 112
Answer:
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Step-by-step explanation:
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