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4 years ago

) Set X has 16 subsets, howmany elements has it?

Mathematics

2 answers:

alina1380 [7]4 years ago

8 0

Step-by-step explanation:

I think maybe it have 2 elements but can you try to send the picture of the question so as the quiz could understanding

sattari [20]4 years ago

4 0

Answer:

It would be 16 probably

Step-by-step explanation:

Sorry if this is incorrect the question is kinda confusing

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Exclude leap years from the following calculations. (a) Compute the probability that a randomly selected person does not have a

Scrat [10]

Answer:

a) 99.73% probability that a randomly selected person does not have a birthday on March 14.

b) 96.71% probability that a randomly selected person does not have a birthday on the 2 nd day of a month.

c) 98.08% probability that a randomly selected person does not have a birthday on the 31 st day of a month.

d) 92.33% probability that a randomly selected person was not born in February.

Step-by-step explanation:

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

A non-leap year has 365 days.

(a) Compute the probability that a randomly selected person does not have a birthday on March 14.

There are 365-1 = 364 days that are not March 14. So

364/365 = 0.9973

99.73% probability that a randomly selected person does not have a birthday on March 14.

(b) Compute the probability that a randomly selected person does not have a birthday on the 2 nd day of a month.

There are 12 months, so there are 12 2nds of a month.

(365-12)/365 = 0.9671

96.71% probability that a randomly selected person does not have a birthday on the 2 nd day of a month.

(c) Compute the probability that a randomly selected person does not have a birthday on the 31 st day of a month.

The following months have 31 days: January, March, May, July, August, October, December.

So there are 7 31st days of a month during a year.

Then

(365-7)/365 = 0.9808

98.08% probability that a randomly selected person does not have a birthday on the 31 st day of a month.

(d) Compute the probability that a randomly selected person was not born in February.

During a non-leap year, February has 28 days. So

(365-28)/365 = 0.9233

92.33% probability that a randomly selected person was not born in February.

6 0

3 years ago

Which equation represents a direct variation? y = 2х y=x+4 y= 1/2x y=3/x

gayaneshka [121]

Answer:option 1 and option 2 represents a direct variation.

Step-by-step explanation:

A direct variation is one in which, as one variable increases in value, the other variable increases in value. Also as one variable decreases in value, the other variable decreases in value.

Looking at the options,

1) y = 2х

When x = 2, y = 2×2 = 4

When x = 3, y = 2×3 = 6

Therefore, y = 2x is a direct variation.

2) y=x+4

When x = 2, y = 2 + 4 = 6

When x = 3, y = 3 + 4 = 7

Therefore, y = x + 4 is a direct variation.

3) y= 1/2x

When x = 2, y = 1/2×2 = 1/4 = 0.25

When x = 3, y = 1/2×3 = 1/6 = 0.17

Therefore, y = 1/2x is not a direct variation.

4) y = 3/x

When x = 2, y = 3/2 = 1.5

When x = 3, y = 3/3 = 1

Therefore, y = 3/x is not a direct variation.

6 0

3 years ago

Mr. Ayer cuts one melon into 8 equal pieces. write the number 1 as a sum unit fractions that name each piece of melon.

sertanlavr [38]

It would split up in eighths. So it would be like 1/8, 2/8, 3/8 ....

6 0

4 years ago

A line passes through the points (–1, –5) and (4, 5). The point (a, 1) is also on the line.

leva [86]

Find the equation of the line through the points (–1, –5) and (4, 5). First, find the slope: m = rise / run = 5/10 = 1/2.

Then the equation is y-5=(1/2)(x-4). If (a,1) is on this line, (a,1) must satisfy the given equation. Let y=1 and solve for x:

1-5 = (1/2)(x-4) Mult both sides by 2 to get -2 = x-4. Then x = -4+2 = -2

So (-2,1) is also on the line.

4 0

4 years ago

Read 2 more answers

Does this mean that A is the home or????

alexira [117]

Where the line segment A starts is home

8 0

4 years ago

) Set X has 16 subsets, howmany elements has it?​

) Set X has 16 subsets, howmany elements has it?