C, 51 because acute angles are less than 90° but together the angles create a right triangle which is 90°.
The answer is C
By the way, that expression means "n choose k". Hope I helped!
The best and most correct answer among the choices provided by your question is none of the above.
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The formula for π (pi) of the circle in terms of the circumference and radius is: Pi = C/2r.</span>
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Answer:
9) 28
10) 22
Step-by-step explanation:
collinear means on the same line
9 ) AB+BC=AC
16+12=28
10) 13+9=22
positive = greater than 0.
Therefore we have the inequality:
|add 7 to both sides
