: no, ur so rude. why do u have to be so mean ....
Answer:
70 I think I am not sure though
Answer:
Step-by-step explanation:
The sum of angles in a triangle is 180°, so angle x is the complement of the one marked 31°.
x = 90 -31
x = 59
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The tangent relation tells you ...
tan(31°) = 10/y
y = 10/tan(31°) = 10/0.6009
y ≈ 16.64
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The sine relation tells you ...
sin(31°) = 10/z
z = 10/sin(31°) = 10/0.5150
z ≈ 19.42
The correct answer is c. Biased samples are NOT random. If you choose a couple people from <em>each grade </em>therefor the answer is c.
