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)

If i have one apple and give you the apple, how many apples do i have?

2people are trying different phones to see which one has the better talk time. chatlong has an average of 18 hours with a standard deviation of 2 hours and talk-a-lot has an average of 20 hours with a standard deviation of 3. the two people who tested their phones both got 20 hours of use on their phones. for the z-scores i got 1 for the chatlong company and 0 for talk-a-lot. what is the percentile for each z-score?

Asap its important using the information in the customer order, determine the length and width of the garden. enter the dimensions. length: feetwidth: feet