Which expression is the best estimate of 1.25 + (-2.69)?
1 answer:
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Answer:
D
Step-by-step explanation:
Using the cosine ratio in the right triangle.
cos66° = =
( multiply both sides by x )
x × cos66° = 13 ( divide both sides by cos66° )
x = ≈ 32.0 ( to the nearest tenth )