Answer:
Second answer choice
Step-by-step explanation:
Good luck
Answer:
Step-by-step explanation:
3x2−2x−7
Answer:
ok thanks
Step-by-step explanation:
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Answer:
Step-by-step explanation:
You know two sides of the triangle and the angle between them, so use the Law of Cosines to solve the triangle.
a² = √(b²+c² - 2bc·cosA)
= √(9²+7.8² - 2·9·7.8·cos(32°)
≅ 4.8
Then use Heron's formula to calculate the area.
semiperimeter s = 0.5×(a+b+c) ≅ 10.8
area = √(s-(s-a)(s-b)(s-c)) ≅ 18.6 square units
For this case we have the following quadratic equation:
The solutions are given by:
We have to:
Substituting:
Answer: