Mathematics, 17.06.2021 22:40 diane8879

See image for question. Question Continuation:
a. both of them winning their respective States.
b. both of them lose in their respective States.
c. at least one of them wins in his state.

See image for question.

Question Continuation:a. both of them winning their respective States.b.

Answers: 3

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Answer from: dedrell16

Question 1

Total number of marbles = 5 + 7 + 8 = 20

(a)

P(red, red) = 5/20*4/19 = 1/19

(b)

P(white and blue) = P(white, blue or blue, white) = 7/20*8/19 + 8/20*7/19 = 14/95 + 14/95 = 28/95

(c)

P(both same colour) = P(red,red or blue,blue or white,white) = 1/19 + 8/20*7/19 + 7/20*6/19 = (20 + 56 + 42)/380 = 118/380 = 59/190

Question 2

P(A) = 2/9P(B) = 4/11

(a)

P(A and B) = 2/9 * 4/11 = 8/99

(b)

P(not A and not B) = (1 - P(A))(1 - P(B)) = 7/9*7/11 = 49/99

(c)

P(A or B) = 1 - P(not A and not B) = 1 - 49/99 = 50/99

Answer from: Quest

Where is the diagram?

Answer from: Quest

ratios represent a pattern or relationship that can be scaled.

equivalent ratios are pairs of ratios that represent the same relationship between quantities, and can be generated by multiplying or dividing both quantities in the ratio by the same factor.

in this lesson, students will use double number lines and ratio reasoning to solve ratio problems. by partitioning double number lines into proportionate intervals, students will build an understanding of equivalent ratio relationships as those that are generated by multiplying or dividing two related quantities by the same number. this lesson will build upon students' prior understanding of multiplicative comparisons, number line reasoning and equivalent fractions (while highlighting the difference between equivalent fractions and equivalent ratios); and will build toward future work in this unit on building ratio tables, and work in future grades in proportionality, scaling, and expressing and graphing linear functions.

step-by-step explanation:

ratios represent a pattern or relationship that can be scaled.

equivalent ratios are pairs of ratios that represent the same relationship between quantities, and can be generated by multiplying or dividing both quantities in the ratio by the same factor.

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