Answer:
16.19
Step-by-step explanation:
Use the cosine rule:
9 plus 10 equals?A. 21B. 21C. 19D. 21
2 answers:
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Solutions
<span>Simplify brackets
</span>
Subtract 12 <span>from both sides
</span>
Simplify <span>18−12</span><span> to </span>6
Divide both sides by <span>5
</span>
x=<span>6/<span>5</span></span>
<span>Simplify brackets
</span>
Subtract 12 <span>from both sides
</span>
Simplify <span>18−12</span><span> to </span>6
Divide both sides by <span>5
</span>
x=<span>6/<span>5</span></span>