In the diagram above, zadc is a central angle and mładc = 60°. what is mzabc?
a. 15°
b. 30 °
c. 60°
d. 120 °

Me answer number 3plz explain how you do it

Write numerical coefficient of y² in the expression 2x² - 15xy – 7y²

The lengths of two sides of a right triangle are given. find the length of the third side. round to the nearest tenth if necessary. a) y = 12/5x + 39/5 b) y = 5/12x + 5/39 c) y = 12/5x - 39/5 d) y = 5/12x - 5/39