If the mean of a symmetrical distribution is 130, which of these values could be the median of the distribution?

In a symmetrical distribuition the mean is in the middle, that is where the median is. Then, in a symmetrical distribution the mean and the median are the same value.

130

One unique triangle, because those angles add up to 180, and that's how many degrees there are in one triangle.

When rates are expressed as a quantity of 1, such as 2 feet per second or 5 miles per hour, they are called unit rates. if you have a multiple-unit rate such as 120 students for every 3 buses, and want to find the single-unit rate, write a ratio equal to the multiple-unit rate with 1 as the second term.