1. Antônio e Marcos estavam tentando montar um grande quebra-cabeça. Antônio montou 2/5 das peças, e Marcos montou 1/3. Que fração das peças do quebra-cabeça eles montaram juntos? * 1 ponto a) 3/8 b) 11/15 c) 4/15 d) 2/15 2. Na festa de aniversário de Camila, 1/3 dos convidados eram primos, 2/7 eram tios, 1/21 eram avós e o restante eram amigos. A alternativa que contém a fração que corresponde à família de Camila (primos, tios e avós) e a fração correspondente aos convidados que são apenas amigos de Camila, respectivamente é: * 1 ponto a) 1/9 e 2/9 b) 4/31 e 27/31 c) 2/3 e 1/3 d) 19/21 e 2/21

the answer is d

step-by-step explanation:

y+3=-4(x-2)

y+3=-4x+8

  -3         -3  

y=-4x+5

(1, –1), (16, –4), (36, –6)

step-by-step explanation:

given that the function is

this can also be written as

we have to graph this function and check which list of points lie on the graph

see attachment for graph:

we find that the points lying are (1,-1) (16,-4) and (36,-6)

since square root is there we find that x can only be posiitve but y can be since square root both positive and negative.

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so

step-by-step explanation:

kekdkckcldlx

55.44 inches

step-by-step explanation:

part a. assuming a perfectly linear relationship, we can find the slope from the first two data points.

slope = m = (change in rainfall)/(change in years)

= (61.80 -62.33)/(2005 -2004) = -0.53/1 = -0.53

then the point-slope form of the equation of the line can be written as

y = m(x -h) +k . . . . . m = -0.53, (h, k) = (0, 62.33)

y = -0.53x +62.33 . . . x = years after 2004

part b. in 2017, x = 2017 -2004 = 13. then the predicted rainfall is

y = -0.53·13 +62.33 = 55.44 . . inches

the predicted rainfall in 2017 is 55.44 in.