Abag contains yellow marbles and red marbles,42 in total. the number of yellow marbles is 3 more than 2 times the number of red marbles. how many yellow marbles are there?

You and a friend race across a field to a fence and back. your friend has a 50-meter head start. the equations shown represent you and your friend's distances dd (in meters) from the fence tt seconds after the race begins. find the time at which you catch up to your friend. you: d=∣−5t+100∣d=∣−5t+100∣ your friend: d=∣−313t+50∣∣

In trapezoid efgh, m∠hef=(4x2+16)∘ and m∠gfe=(5x2+12)∘. find the value of x so that efgh is isosceles.

Which expression is equivalent to7_/x^2 ÷ 5_/y^3? assume y# 0