Question

In the adjoining figure, EF|GH, Z BAC 50 and ZACH 110, then the value of y is :

Answer 1

Answer:

average equal sum of all observation upon number of observation 42 equal sum of height of all boys and girls upon 20 + 15 3542 35 equal 1470 the average height of The Voice 41.5 equal sum of height of all voice upon 15 40 1.5 multiply 15 = 2.5 sum of height of 20 years is 1470 - 62 2.5 equal to 8 47.5 at 47.5 upon 20 equal 42.3 75