Answer:
0.998272 (0.998 in 3sf)
Step-by-step explanation:
Probability(detects) = 0.88
Probability(doesn't detect) = 1 - 0.88 = 0.12
Total probability is always 1
Probability of atleast one detecting = 1 - probability(all not detecting)
= 1 - (0.12×0.12×0.12)
= 1 - 0.001728
= 0.998272
BE is parallel to CD, therefore, m∠BEC=m∠ECD, therefore mBC=mDE
BE is the diameter, so Arc BE is 180 degree
mBC+mCD+mDE=180
replace mCD with 3mBC, and replace mDE with mBC: mBC+3mBC+mBC=180
5mBC=180
mBC=180/5=36
mCD=3mBC=3*36=108
the inscirbed angle m∠ECD= the measure of arc DE=36
Answer:
10.5638 C.
Step-by-step explanation:
Hopefully this helped, if not HMU and I will get u a better answer
<em>-Have a great day! :)</em>
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Answer:
See below for answers
Step-by-step explanation:
1st angle = 2x
2nd angle = x
3rd angle = x - 8
Sum of the angles in a triangle = 180°
1st + 2nd + 3rd = 180°
2x + x + x - 8 = 180°
4x - 8 = 180°
4x = 188
x = 47°
Now substitute
1st angle = 2x = 2(47) = 94°
2nd angle = x = 47°
3rd angle = x - 8 = 47 - 8 = 39
Check: 94 + 47 + 39 = 180°
For b. They are all correct, you can justify because all pairs are different versions of the same angle
