2mn + 4n 2 and 5m 2 - 7mn answers at bottom 1) 9m2 + 9mn - 4n2 2) 5m2 - 14mn - 4n2 3) 5m2 - 5mn + 4n2 4) 5m2 + 5mn - 4n2

x+y=90

x=30-y=x

step-by-step explanation:

if you understand you will get the answer

answer: city needs 2.4 inches of rainfall more to match the record of 40 inches.

step-by-step explanation:

since we have given that

total annual rainfall a city record = 40 inches

this year, total rainfall recorded = 37.6 inches

number of inches of rainfall   is needed to match the record of 40 inches is given by

hence, city needs 2.4 inches of rainfall more to match the record of 40 inches.