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1 year ago

When simplified, 9x-(x+4) is what

Mathematics

1 answer:

laila [671]1 year ago

3 0

Answer:

4 (-1 + 2 x)

Step-by-step explanation:

Simplify the following:

9 x - (x + 4)

-(x + 4) = -x - 4:

9 x + -4 - x

Grouping like terms, 9 x - 4 - x = (9 x - x) - 4:

(9 x - x) - 4

9 x - x = 8 x:

8 x - 4

Factor 4 out of 8 x - 4:

Answer: 4 (-1 + 2 x)

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Answer:

B (√6)/4

Step-by-step explanation:

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_____

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2 years ago

Consider rolling two fair dice and observing the number of spots on the resulting upward face of each one. Letting A be the even

Allushta [10]

Answer:

$P(E|A)= \frac{10}{11}$

Step-by-step explanation:

Given

Two rolls of die

$E \to$ one of the outcomes is 6

$A \to$ atleast one is 6

Required

P(E|A)

First, list out the outcome of each

$E = \{(1,6),(2,6),(3,6),(4,6),(5,6),(6,1),(6,2),(6,3),(6,4),(6,5)\}$

$A = \{(1,6),(2,6),(3,6),(4,6),(5,6),(6,1),(6,2),(6,3),(6,4),(6,5),(6,6)\}$

So:

$P(E|A)= \frac{n(E\ n\ A)}{n(A)}$

Where:

$E\ n\ A = \{(1,6),(2,6),(3,6),(4,6),(5,6),(6,1),(6,2),(6,3),(6,4),(6,5)\}$

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$n(A) = 11$

So:

$P(E|A)= \frac{10}{11}$

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2 years ago