2 years ago

1. Solve each of the following addition and subtraction problems.

Mathematics

1 answer:

balandron [24]2 years ago

5 0

A. 199

b. -71

c. -2.25

d. 30

e. -18

f. -4

g. 4

h. 7

i. 0

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Step-by-step explanation:

The number of red marbles in the bag is; $n(R)=3$ .

The number of blue marbles in the bag is; $n(B)=4$ .

The number of white marbles in the bag is; $n(W)=5$ .

The total number of marbles in the bag is: $n(S)=3+4+5=12$ .

The probability of selecting a blue marble is $P(B)=\frac{n(B)}{n(S)}$

We substitute the given information to obtain:

$P(B)=\frac{4}{12}$

We simplify to obtain:

$P(B)=\frac{1}{3}$

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