sarahortega459
18.02.2020 •
Mathematics
What is the area of a triangle with A = 15°, B= 113', and b = 7?
a. 3.8 units
c. 5.4 units
b. 4.2 units
d. 4.4 units
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Ответ:
The answer is C, 5.4 units
Step-by-step explanation:
Ответ:
Step-by-step explanation:
an=-3n+50
Let n=15 because we need to find 15th term
a15=-3×15+50
=-45+50
=5