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3 years ago

Suppose you draw a card from a well-shuffled deck of 52 cards. Find each of the following odds.

Mathematics

2 answers:

Sphinxa [80]3 years ago

8 0

1. 2/52 2. 51/52 3. 1/52

garik1379 [7]3 years ago

6 0

1) number of cards that aren't : number of cards that are 3
we have 48 cards that arent 3 and 4 cards that are. that means that odds are:
12:1 of not drawing 3

2) fallow same logic. its just opposite.
1:12

3) same logic. but there are only 2 black 7 cards which means that odds are:
50:2 or
25:1

4) opposite of previous.
1:25

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Please answer if you know the answer

Fofino [41]

Answer:

2:5, 5:2

Step-by-step explanation:

Lets use 30 and 12. 12 divided by 30 is 0.4, which reduced is 2:5, or u can write 0.4. Thats oil to flour

But opposite numbers for flour to oil, bc of common sense.

Hope this helps(would be appreciated if you mark this answer brainliest bc need for lvl up. )

4 0

3 years ago

Read 2 more answers

A train leaves a station at 10:40 a.m. and arrives at its destination at 1:20 p.m. Find the distance between the stations if the

Katena32 [7]

Average speed = distance / time

60 = distance / (13.20 - 10.40)

13.20 - 10.40 = 2 hours 40 minutes = 2 2/3 hours

60 = distance / 8/3 = 3 d / 8 (where d = distance)

3d = 480

d = 480/3 = 160 miles Answer

4 0

4 years ago

PLEASE HELP ASAP FIRST TO ANSWER CORRECTLY GETS BRAINLYIST

Bond [772]

Answer:

B. 90 degrees

Step-by-step explanation:

The definition of supplementary is that they add up to 180 degrees. If the measure of angle A is 90 degrees, then angle B is 180-90 = 90 degrees.

7 0

3 years ago

Central Middle School has 300 students. There are 66 students at the school who are on the swim team.

timofeeve [1]

To find the percentage of students on the swim team all you have to do is divide the amount of students in it by the complete number of students. (66/300) That should give you your answer which is around 22%.

3 0

3 years ago

In previous tests, baseballs were dropped 24 feet onto a concrete surface, and they bounced an average of 92.82 inches. In a t

goblinko [34]

Answer:

There is sufficient evidence to support the claim that the new balls have bounce heights with a mean different from 92.8292.82 inches, and it appears that the new baseballs are different

Step-by-step explanation:

Given that in previous tests, baseballs were dropped 24 feet onto a concrete surface, and they bounced an average of 92.82 inches

But new balls showed mean of 92.6 inches with s = 1.72 inches

Sample size = 23

Since sample size is less than 30 and population std deviation is not know we use t test

$H_0: \bar x = 92.82\\H_a: \bar x \neq 92.82$

(Two tailed test at 5% significance level)

Mean difference = $92.6-92.82=-1.22$

Std error of sample mean = s/sqrt n = $\frac{1.72}{\sqrt{23} } \\=0.3586$

Test statistic t = mean diff/std error = -3.402

df = 23-1 =22

p value = 0.002559

since p value <5% we reject H0

There is sufficient evidence to support the claim that the new balls have bounce heights with a mean different from 92.8292.82 inches, and it appears that the new baseballs are different

3 0

3 years ago