The measure of the vertex angle of an isosceles triangle is 64 degrees. What is the measure of each base angle?

Me write an equation for the interior angles of this triangle that uses the triangle sum theorem

Which statements are true? see picture

Aprojectile is thrown upward so that its distance above the ground after t seconds is given by the function h(t) = -16t2 + 704t. after how many seconds does the projectile take to reach its maximum height?