Cosine formula = adjacent/ hypotenuse
5 is the adjacent and 13 is the hypotenuse
ANSWER= D
Answer:
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Step-by-step explanation:
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The sum of 0.423 and 4.7 is 5.123
Answer: The answer is D
Step-by-step explanation: 12x means 12 times x, which means her age is 12 times her brother's age.