A set is NOT a function when there's an x-coordinate that is repeated, so let's check who is who.
In 9 hours, a 170-lb person has drunk 4 16-oz beers
1 answer:
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Answer:
Step-by-step explanation:
Use formula
Hence,
This expression is equal to
so we can equate the coefficients at powers of x:
Answer:
Step-by-step explanation:
4.
2ab cos C=a²+b²-c²
2×31×14 cos C=31²+14²-40²
868 cos C=961+196-1600=-443
cos C=-443/868
C=cos^{-1}(-443/868)≈120.688≈120.69°
5.
by sine formula
m∠B=180-(62+55)=180-117=63°