Which characteristics will prove that DEF is an acute isosceles triangle

What is the value of x in the following equation? -3x-2=2x+8

Valentina is subtracting from . she finds the lcd to be 15y2. what is valentina's next step?

George is putting trim around his rectangular deck, including the gate. he will need 44 feet of trim to do the entire deck. if the deck is 13 feet long, how wide is the deck?