The perimeter of a triangle below is 6a + 2b -5 units. write expression to represent the length in units , of the missing side of the triangle 2a-3b a-3 as are know sides.

Acar started driving from city a to city b, distance between which is 620 miles, at a rate of 60 mph. two hours later a truck left city b and started moving towards city a at a rate of 40 mph. how many hours after the truck's departure will the two meet?

Which must be true in order for the relationship △zyv ~ △xwv to be correct? zy ∥ wx ∠z ≅ ∠y and ∠w ≅ ∠x zv ≅ vy and wv ≅ vx ∠z ≅ ∠x and ∠w ≅ ∠y

Gabrielle's age is two times mikhail's age. the sum of their ages is 84. what is mikhail's age?