3/15divied by 4/9

please help me im only in fourth grade and I don't understand this math

_parker lee hancock

7friends share 4 pizzas equally how much pizza did each friend get

The graph shows the distance y, in inches, a pendulum moves to the right (positive displacement) and to the left (negative displacement), for a given number of seconds x. how many seconds are required for the pendulum to move from its resting position and return? enter your answer in the box.

If the measure of angle 1 is 110 degrees and the measure of angle 3 is (2 x+10 degree), what is the value of x?