Answer: C
Step-by-step explanation:
Since the big triangle is an isosceles one, we conclude that the angles of the left triangle are: 32, 90 and 3x-10. Sinche the sum of this angles have to be 180° we have:

Solving for x, we have:

Therefore, x=22.67 and the answer is A.
Answer:
150, 300, 450, 600, 750
Step-by-step explanation:
Answer:
1 ornament per 3 hours
in 15 hours she will have 7.5 of them done
Answer:
perfect square
Step-by-step explanation:
A perfect square is a number multiplied by itself:
16 = 4^2 = 4 * 4