Answer:
∠ ABC ≈ 137.9°
Step-by-step explanation:
Using the Cosine rule in Δ ABC
cos B =
with a = 89, b = 144, c = 65
cos B = =
=
, thus
B = ( -
) ≈ 137.9° ( to the nearest tenth )
it costs $2 to spin the spinner shown below. if you land on an even number, you win $10. if you land on an odd number, you get $
1. what is the expected value of playing this game one time? $1 $2.38 $8 none of the above. $10
2 answers:
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