On a standardized test with a normal distribution of scores, the mean score is 150 and the standard deviation is 18. Which interval will contain 95% of the scores? a. 132-168

b. 150-168

c. 114-186

d. 141-159

Given that de, df, and ef are midsegments of △abc, and de=3.2 feet, ef=4 feet, and df=2.4 feet, the perimeter of △abc is .

Solve the system of equations. y= 2x y= x^2 - 15

Will give are given that xy is parallel to zw. if xz is a transversal that intercepts xy and zw, angle angle alternate interior angles. since xy is parallel to zw, we know that these angles are we also know that angle xvy and angle zvw are , and thus congruent. we can conclude that △xyv ~ △zwv using the similarity theorem.