Answer:
D. 3.75%
Step-by-step explanation:
11.25/3month
3.75/month
Option (3)
By applying cosine rule in the triangle ABC,
BC² = AC² + AB² - 2(AC)(AB)cosA
5² = 3² + 7²- 2(3)(7)cosA
25 = 9 + 49 - 42cos(A)
25 = 58 - 42cos(A)
cos(A) =
A =
A = 38.21°
A ≈ 38°
Option (3) will be the correct option.
3(x+9)
3 multiply both x and 9
3x+27
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