From 24 teachers to 30 teachers and also from 75 pencils to 225

The mean of a set of data is -3.82 and its standard deviation is 2.31. find the z score for a value of 3.99.

Are triangles the congruent? write the congruency statement.what is the congruency that proves they are congruent? what is the perimeter of ∆pqr?

Right triangle xyz has a right angle at vertex y and a hypotenuse that measures 24 cm. angle zxy measures 70º. what is the length of line segment xy? round to the nearest tenth. 8.2 cm 8.7 cm 22.6 m 25.5 cm