Soit x un nombre ratinnel. On donne: D=(2x-5)×(-3x+3)-20x+4x²+25 1) Développer et réduire D
2)Factoriser D
3)Calculer D pour x= -1/2​

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.

constants mean the stopped points or the points on a graph that nothing is changing, hope this

step-by-step explanation:

hello from mrbilldoesmath!

answer:

25x^2 + 90x + 84

discussion:

mn(x) = m(n(x)) = m( 5x + 9) =

(5x + 9)^2 + 3 =>

25x^2 + 90x + 9^2 + 3 =

25x^2 + 90x + 84                 (as 9^2 = 9*9 = 81)

which is the second choice

regards,  

mrb

p.s.   i'll be on vacation from friday, dec 22 to jan 2, 2019. have a great new year!

well we know there are 4 clubs in 52 cards so it’s replaced so it should be 3/51

step-by-step explanation: