Suppose that 9 is a factor of a number

1 answer:

6 0

I dont get your question here but 9 can be a factor of the following:
9, 18, 27, 36, 45, 54, 63, 72, 81, 90, and further on.

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A bag contains 3 red, 4 black, and 2 green balls. One ball is drawn at random from the bag, find the probability that the drawn

Kazeer [188]

There are total (3r + 4g + 2b) = 9 balls in the bag . Two balls are drawn, our event happens if exactly one of them is a green ball. The required probability of happening of the required event is, therefore

= {C(4, 1)xC(5, 1)}/ C(9, 2) = (5x4)/36

= 5/9 .

8 0

3 years ago

Solve -2/3x > 8 or -2/3x < 4.

vekshin1

<h3>Answer: Choice C</h3>

{x | x < -12 or x > -6}

=========================================================

Explanation:

Let's solve the first inequality for x.

(-2/3)x > 8

-2x > 8*3

-2x > 24

x < 24/(-2)

x < -12

The inequality sign flips when we divide both sides by a negative value.

Let's do the same for the second inequality.

(-2/3)x < 4

-2x < 4*3

-2x < 12

x > 12/(-2)

x > -6

The conclusion of each section is that x < -12 or x > -6 which points us to choice C as the final answer.

Side note: The intervals x < -12 and x > -6 do not overlap in any way. There's a gap between the two pieces. We consider these intervals to be disjoint. The number line graph is below.