Problem

Use the following diagram to answer questions 2 - 5 .
2. Find side $x$ to one decimal place if necessary. (2\%)
3. Find angle $A$ to the nearest degree. $(2 \%)$
4. Find side $y$ to one decimal place. $(2 \%)$
5. Find side d to one decimal place. $(2 \%)$

Answer

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Answer

\(x = \boxed{22.5}\)

Steps

Step 1 ：\(A + B + C = 180\)

Step 2 ：\(A = x\)

Step 3 ：\(B = 2x\)

Step 4 ：\(C = 5x\)

Step 5 ：\(x + 2x + 5x = 180\)

Step 6 ：\(8x = 180\)

Step 7 ：\(x = \frac{180}{8}\)

Step 8 ：\(x = \boxed{22.5}\)

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