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3 years ago

What is the probability of receiving a 6 or a 9 from a deck of 52 cards?

Mathematics

2 answers:

Anna11 [10]3 years ago

8 0

There are four 6's and four 9's.

8/52

mezya [45]3 years ago

8 0

There are 4 6s and 4 9s in a deck of card.

Pr(6or9) = 8/52 = 2/13

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Solve for x. 9x=3x−36 A −6 B −4 C 4 D 6

Wittaler [7]

Ok so first you move them together so:
9x-3x=-36
6x=-36
x= $\frac{-36}{6}$
Then divide to get: -6
Your answer would be A

4 0

3 years ago

Read 2 more answers

What is the common ratio of the following geometric sequence 5/12, 1/4,3/20,9/100,27/500

suter [353]

Answer:

3/5

Step-by-step explanation

Ratio =second term divided inti first term a2/a1

a1=5/12 a2=1/4

1/4: 5/12 is the same as 1/4*12/5 =12/20 = 3/5

5/12*3/5 = 15/60 = 1/4

1/4* 3/5 =3/20

3/20*3/5 =9/100

9/100 *3/5 = 27/500..........

5 0

3 years ago

A box contains 5 red balls, 6 white balls and 9 black balls. Two balls are drawn at

valina [46]

Answer:

$P(Same)=\frac{61}{190}$

Step-by-step explanation:

Given

$Red = 5$

$White = 6$

$Black = 9$

Required

The probability of selecting 2 same colors when the first is not replaced

The total number of ball is:

$Total = 5 + 6 + 9$

$Total = 20$

This is calculated as:

$P(Same)=P(Red\ and\ Red) + P(White\ and\ White) + P(Black\ and\ Black)$

So, we have:

$P(Same)=\frac{n(Red)}{Total} * \frac{n(Red) - 1}{Total - 1} + \frac{n(White)}{Total} * \frac{n(White) - 1}{Total - 1} + \frac{n(Black)}{Total} * \frac{n(Black) - 1}{Total - 1}$

Note that: 1 is subtracted because it is a probability without replacement

$P(Same)=\frac{5}{20} * \frac{5 - 1}{20- 1} + \frac{6}{20} * \frac{6 - 1}{20- 1} + \frac{9}{20} * \frac{9- 1}{20- 1}$

$P(Same)=\frac{5}{20} * \frac{4}{19} + \frac{6}{20} * \frac{5}{19} + \frac{9}{20} * \frac{8}{19}$

$P(Same)=\frac{20}{380} + \frac{30}{380} + \frac{72}{380}$

$P(Same)=\frac{20+30+72}{380}$

$P(Same)=\frac{122}{380}$

$P(Same)=\frac{61}{190}$

4 0

2 years ago

Find the area of a triangle with:

telo118 [61]

Answer:

161cm2

Step-by-step explanation:

Area: 1/2 x base x height

1/2 x 14 x 23=161

Area is measured in cm2

Hope this helps!

8 0

3 years ago

Convert the angle θ=180∘ to radians.

Kazeer [188]

Answer:

Step-by-step explanation:

To convert from degrees to radians, we multiply by pi/180

180 * pi/180 = pi

3 0

3 years ago