Which equation can be used to find the measure of angle lkj? cos−1(startfraction 8.9 over 10.9 endfraction) = x cos−1(startfraction 10.9 over 8.9 endfraction) = x sin−1(startfraction 10.9 over 8.9 endfraction) = x sin−1(startfraction 8.9 over 10.9 endfraction) = x

1. there are 25 students who started computer programming in elementary school and 25 students who started computer programming in middle school. the first group had a mean final project grade of 95% and the second group had a mean final project grade of 92%. the line plot shows the differences after 10 rerandomizations. determine whether the difference in the means of the two groups is significant based on the line plot. explain your answer.

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

Which rectangle if translated 6 units right and 16 units down and the rotated 90° clockwise about the point (4, -11) will result in rectangle e?