20. Calcule o valor numérico das expressões: a) x – y (para x =5 e y = -4) b) 3x + a (para x =2 e a=6) c) 2x + m ( para x = -1 e m = -3) d) m – 2 a ( para m =3 e a = -5) e) x + y ( para x = ½ e y = -1/5) f) a –b ( para a =3 e b = -1/2)

answer: dead jah

step-by-step explanation:

bullet + jah= dead jah

10.416 meters per second

step-by-step explanation:

distance=1 00 meters

time= 9.6 seconds in decimal form or 9 3/5 as a mixed number

average speed= 100/9.6

=10.416 meters per second or 10 52/125 as a mixed number.

explanation:

previous steps have made pa≅ pb ≅ st ≅ su. setting the compass width to ab allows you to make tu the same length. then δstu ≅ δpab by the sss congruence postulate, and ∠p ≅ ∠s by the reason cpctc.