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3 years ago

Simplify 2x – 9y + 4x + 11y by combining like terms and then evaluate at x = -2 and y = 4.

Mathematics

1 answer:

Mashcka [7]3 years ago

7 0

Step-by-step explanation:

= 2x - 9y + 4x + 11y

First of all combining like terms

= 2x + 4x - 9y + 11y

= 6x + 2y

Now putting values

= 6 (-2) + 2(4)

= - 12 + 8

= - 4

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Answer:

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Step-by-step explanation:

From the Venn diagram, n(AUB)=31

The given probabilities in the option are calculated below:

$P(A)=\dfrac{21}{31}\\\\P(B)=\dfrac{16}{31}\\\\P(A|B)=\dfrac{P(A\cap B)}{P(B)}= \dfrac{6/31}{16/31} =\dfrac{6}{16}=\dfrac{3}{8} \\\\P(B|A)=\dfrac{P(B\cap A)}{P(A)}= \dfrac{6/31}{21/31} =\dfrac{6}{21}=\dfrac{3}{7}$

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