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

$x = 22.5$

Steps

Step 1 ： $A + B + C = 180$

Step 2 ： $A = x$

Step 3 ： $B = 2 x$

Step 4 ： $C = 5 x$

Step 5 ： $x + 2 x + 5 x = 180$

Step 6 ： $8 x = 180$

Step 7 ： $x = \frac{180}{8}$

Step 8 ： $x = 22.5$