Answer:
x≥4
Step-by-step explanation:
We want to solve for x in

Let us add 3 to both sides:

We simplify to get:

Divide through by 2 to get:

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Answer: a) about 450
Step-by-step explanation:
50 multiplied by 9 is 450 and its asking for an approximate so it would be anything near 450
72 sq in times 9 is 648 sq in
Because the angle ACB is a central angle, and arc AB=93⁰,
so angle ACB also = 93⁰.