Y^2 + y - 72 factorise

y² + y - 72

= y² + 9y - 8y - 72

= y(y + 9) - 8(y + 9)

= (y - 8)(y + 9)

Step-by-step explanation:

(y + 9) (y - 8)

Step-by-step explanation:

y² + y - 72

= y² + 9y - 8y - 72

= y (y + 9) - 8 (y + 9)

= (y + 9) (y - 8)

Hope it helps :)

Please mark my answer as the brainliest

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.