The graph below shows the price of different numbers of mats at a store: a graph is shown. the values on the x axis are 0, 2, 4, 6, 8, 10. the values on the y axis are 0, 21, 42, 63, 84, and 105. points are shown on ordered pairs 0, 0 and 2, 21 and 4, 42 and 6, 63 and 8, 84. these points are connected by a line. the label on the x axis is number of mats. the title on the y axis is price in dollars. which equation can be used to determine p, the cost of b mats?

Step-by-step explanation:

We have been an image of triangle RST. We are asked to find the measure of median RU.

We know that median of a triangle divides opposite side of triangle into two equal parts.

We can see that side ST is the opposite side of vertex R.

Since we have been given that RU is median of triangle, so TU is equal to SU.

Upon subtracting 7x from both sides of our equation, we will get:

Now, we will substitute in the expression for RU, we will get:

Therefore, the length of RU is 11 units.