Asquare playground has a perimeter of 120 yards. what is the length of a diagonal of the playground?

How are sas and sss used to show that two triangles are congruent?

The equation of a parabola is given. y=18x2+4x+20 what are the coordinates of the focus of the parabola?

Assume that adults have iq scores that are normally distributed with a mean of mu equals 100 and a standard deviation sigma equals 20. find the probability that a randomly selected adult has an iq between 80 and 120.assume that adults have iq scores that are normally distributed with a mean of mu equals 100 and a standard deviation sigma equals 20. find the probability that a randomly selected adult has an iq between 80 and 120.