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4 years ago

Graph the quadratic and identify the following: y=x^2-2x-3

Mathematics

1 answer:

kirill [66]4 years ago

5 0

Here ya go. I can show you how to get all of these if necessary as well. hope this helps!

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There is a bag filled with 4 blue and 5 red marbles. A marble is taken at random from the bag, the colour is noted and then it i

DIA [1.3K]

Answer:

16.67% probability of getting 2 blues

Step-by-step explanation:

A probability is the number of desired outcomes divided by the number of total outcomes.

The order in which the marbles are selected is not important. So we use the combinations formula to solve this question.

Combinations formula:

$C_{n,x}$ is the number of different combinations of x objects from a set of n elements, given by the following formula.

$C_{n,x} = \frac{n!}{x!(n-x)!}$

What is the probability of getting 2 blues?

Desired outcomes:

Two blue marbles, from a set of 4.

$D = C_{4,2} = \frac{4!}{2!(4-2)!} = 6$

Total outcomes:

Two marbles, from a set of 9.

$T = C_{9,2} = \frac{9!}{2!(9-2)!} = 36$

Probability:

$p = \frac{D}{T} = \frac{6}{36} = 0.1667$

16.67% probability of getting 2 blues

6 0

3 years ago

Susan can read 15 pages in 45 minuets. How many pages can she read in 60 minutes

Nady [450]

45mins ÷ 15pages = 3
so she reads 3pages per minute

3pages × 60minutes = 180

she read 180pages in 60minutes

hope this helps

7 0

3 years ago

Help me with this homework its in the Pythagoras theorem topic

KonstantinChe [14]

Answer:

I am not sure i need more information

Step-by-step explanation:

more information please!

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3 years ago

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Is the following number rational or irrational?

Nadusha1986 [10]

A, an irrational number would be something like 200.688965529290363892

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3 years ago

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Rajah has with his parents?

Tomtit [17]

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3 years ago

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