Answer:
20.57 cm
Step-by-step explanation:
Circumference of half circle = diameter + half of circumference

Answer: - x - 120
Explanation: You want to find the opposite of (120-x) not just x, so you just put the negative symbol next to both the variables.
Answer:
the answer is C
Step-by-step explanation:
2x - 3y > -12
3x + 2y < or = 18
10 dollars because her mom gave her 4. Subtract her total of 9 dollars she has by 4 from her mom. That is 5, however you need to multiply by 2 because she lost one half of it.