Answer:
x ≈ 11.7
Step-by-step explanation:
Using the cosine ratio in the right triangle
cos26° = =
( multiply both sides by 13 )
13 × cos26° = x , then
x ≈ 11.7 ( to the nearest tenth )
Mary's age is 10 years less than 2 times Joe's age. If the difference between their ages is 30, how old is Mary?
2 answers:
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