For what value of x is the following quadrilateral a parallelogram?

2x-9 = x+8

2x-9-x=8

2x-x = x

x-9=8

x = 9+8

x=17

answer

a) the midrange of the data set shown is 85.5

step by step explanation

let's find the midrange.

the midrange is nothing but add the greatest value and the least value, then divide it by 2.

here the greatest value = 99

the least value = 72

midrange = (99 + 72)/2

= 171/2

midrange = 85.5

you.