Questions in mathematics

Questions in mathematics

[Done] What is the fraction of a circle represented by 30 degrees?

[Done] What fraction of a circle is represented by an angle of 120 degrees?

[Done] One of the base angles of an isosceles triangle is 49°. What is the measure of the vertex angle?

[Done] Can someone please explain how I would figure this out

[Done] Which property is illustrated by the equation (a + b) + c = c + (a + b)?

[Done] 81 is 54% of what number?

[Done] George has a small coin collection. He has collected 16 gold coins, 28 silver coins, 32 copper coins, and 4 bronze coins. At a flea market, George sells 15% of his coins. Find the number of coins he sold.

[Done] Find the greatest common factor (GCF) of 15 and 35.

[Done] The regular price of a shirt is $24. The sale price is $18. The sale price is what percent of the regular price?

[Done] Find a rational number between 1.7 and 1.8.