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1. maths

   A bag contains only red, green, brown and yellow marbles. The probabilities of selecting each colour are shown below. The probability of choosing a red marble is the same as choosing a yellow marble. Colour Red Green Brown Yellow

2. Math

   A bag contains three black balls, four white balls and five red balls. Three balls are removed without replacement. What is the probability of obtaining a one of each colour b at least two red balls ?

3. math

   A bag contains only red, green, brown and yellow marbles. The probabilities of selecting each colour are shown below. Colour Red Green Brown Yellow Probability 5x 2x 3x 4x Find the probability of selecting a yellow marble.

4. maths

   A box contains 20 balls, of which 5 are red, 5 are blue, 5 are white and 5 are green. Suppose a sample of 5 balls are chosen without replacement. a) find the probability that the sample contains balls of all the same colour

1. Math

   The table show the colour preferences of 50 shoppers at the mall. What is the probability that one shopper, selected at random from the 50 surveyed, prefered the color red or blue?? ||7 Red, 3 Yellow, 13 Blue, 15 Green, 12

2. chemistry 12 lab

   We did a lab on equilibrium and this is one of the following questions: When Ag ions are added to FeSCN ions (which are red in colour), the colour disappears, and a white precipitate of AgSCN forms. The question is.. Explain why

3. science

   A chemist mixes two liquids together. The reaction produces a gas and a solid. According to the law of conservation of mass, what should the chemist observe when she compares the total masses of the substances before and after the

4. Math

   A bag contains equal numbers of red, blue, and yellow marbles. A student chooses a marble at random. What is the relationship between the probability that the marble is red and the probability that the marble is not red? A) P(red)

1. Biology

   In fruit flies, eye colour is a sex-linked trait. Red eyes are dominant over white eyes. If a white-eyed female fly is crossed with a red-eyed male fly, what proportion of the offspring would have white eyes? A) 0% B) 25% C) 50%

2. Mathematics

   A bag contains only red, green, brown and yellow marbles. The probabilities of selecting each colour are shown below Colour= red green brown yellow Probability = 6x 2x x 4x Find the probability of selecting a red marble

3. Solid State Physics

   Why do covalent crystals typically have a much lower packing density than metal crystals?

4. Math

   12. Mixing red and blue gives purple, blue and yellow gives green, and red and yellow gives orange. A spinner is blue and red. Another one is blue, red, and yellow. If the pointers of both spinners are spun, find each probability.

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