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2 years ago

12

Two equations are given below:

1 answer:

jeka942 years ago

4 0

Siince 2nd equation is already equal a, subsitute b-2 for a in the other equation

b-2-3b=28
-2-2b=28
add 2 to both sides
-2b=30
divide both sides by -2
b=-15
sub back
a=b-2
a=-15-2
a=-17

(a,b)
(-17,-15)

3rd choice

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gladu [14]

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Step-by-step explanation:

Given

$P(A) = \frac{1}{4}$

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Required

Determine if they are mutually exclusive or not

Mutually exclusive are defined by:

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So, we have:

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Take LCM

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By comparing:

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