A Weather Forecaster, predicts that there is a 50% chance of rain on Saturday and a 40% chance of rain on Sunday. If these probabilities are
correct, what is the probability that it DOESN'T rain at all on the weekend?
20%
30%
40%
50%
None of the above.

answer is : muchas/tipicas

have a nice day!

~recklesschicken

in the attachment.   i didn't see your choices.   the word which means there is choices.

step-by-step explanation:

(x,y)

x tells you how much left or right you go from the origin

y tells you how much down or up you go from the origin

so for example (-3,2), you go left 3 and up twice. i denoted which of the ordered pairs is which in my graph.

the image is given below

since the options are not given so we draw it from the equation

the given equation is

y = (x-1) (x+4)

y = y² + 3x - 4

the above equation is a quadratic equation which will have two roots. if we draw the graph for it, it will look like this