Cato's age is half the summer of her brothers age and six if cato is nine years old how old is her brother

Geometry in the diagram, ∠abc is a right angle. ∠dbc = 30°27'40". find the measure of ∠abd.

Solve each quadratic equation by factoring and using the zero product property. [tex]x^2+6x+8=0[/tex]

How many 3-digit numbers can you write using only digits 1 and 7? (of course, digits can repeat.) how many 3-digit numbers can you write using only digits 1 and 7? (of course, digits can repeat.)