All categories

2 years ago

7. If P = [5,6,7,8). Q = (2,4,6,8) andR=2, 3, 7, 9), then P nQnR=

Mathematics

2 answers:

Setler [38]2 years ago

7 0

Answer:

pnQnR= {}

Step-by-step explanation:

there is no number common in set P, set Q and set R.

So the answer is null

{}

valentina_108 [34]2 years ago

3 0

Answer:

{} there is no number common to the three sets so it is an empty set

Step-by-step explanation:

You might be interested in

Give an example of a set of five ordered pairs. Determine the domain and range of the set.

sergey [27]

DOMAIN:

Set of allowable inputs (set of 1st elements of the ordered pairs in relation)
X point
AKA the input

DEFINE INPUT:

A number that'll be used in a function rule to determine the value of the output

RANGE:

Set of possible outputs (set of 2nd elements of the ordered pairs in relation)
Y point
AKA the output

DEFINE OUTPUT:

Result of applying a function rule to the value of ani input

ORDERED PAIRS:

(-1, 7): -1 is the domain & 7 is the range

(3, 5): 3 is the domain & 5 is the range

(4, 9): 4 is the domain & 9 is the range

(-6, -10): -6 is the domain & -10 is the range

(-2, 8): -2 is the domain & 8 is the range

Hope this helps you!!! :)

8 0

2 years ago

the students are selling cookies at a school fair. sara is selling 3 cookies for 2.49 dollars. B. how much would it cost to buy

Alex

It will cost $16.6 to buy 20 cookies. Hope it help!

3 0

2 years ago

the perimeter of a square is 20 ft if you increase the length of the square by 2 feet and decrease the width by 1ft what is the

IrinaVladis [17]

Answer:

28 ft squared

Step-by-step explanation:

The 4 sides of a square are equal in length, so if the perimeter is 20ft that means each side would have to be 5ft, (20/4 = 5). If you increase the length by 2ft, one of the sides would now become 7ft (5+2 = 7). If you decrease the length of the other side by 1ft, the length would now be 4ft (5-1=4). Now to find the area, all you have to do is length * width. So you would do 7ft*4ft which is 28ft squared.

4 0

2 years ago

The bill for a meal at a restaurant before tax is $84.00. the sales tax rate is 7% and you want to leave a 20% tip based on the

Strike441 [17]

The pree tax amount count as 100%, then there's the 7% tax and lastly the 20% tip. therefore, one would pay (100+20+7)% of $84.00.
127% of $84.00
(127/100) * $84.00 = $106.68

4 0

2 years ago

Assume that body masses of Goldfinch birds follow a normal distribution with standard deviation equal to 0.04 oz. An ornithologi

il63 [147K]

Answer:

The formula to generate 70% confidence interval is: $[\overline{x} - 0.013, \overline{x} + 0.013]$ , in which $\overline{x}$ is the sample mean.

Step-by-step explanation:

We have that to find our $\alpha$ level, that is the subtraction of 1 by the confidence interval divided by 2. So:

$\alpha = \frac{1 - 0.7}{2} = 0.15$

Now, we have to find z in the Z-table as such z has a p-value of $1 - \alpha$ .

That is z with a pvalue of $1 - 0.15 = 0.85$ , so Z = 1.037.

Now, find the margin of error M as such

$M = z\frac{\sigma}{\sqrt{n}}$

In which $\sigma$ is the standard deviation of the population and n is the size of the sample.

Assume that body masses of Goldfinch birds follow a normal distribution with standard deviation equal to 0.04 oz.

This means that $\sigma = 0.04$ .

Sample of 10 birds:

This means that $n = 10$ .

The margin of error is of:

$M = z\frac{\sigma}{\sqrt{n}}$

$M = 1.037\frac{0.04}{\sqrt{10}}$

$M = 0.013$

The lower end of the interval is the sample mean of $\overline{x}$ subtracted by M.

The upper end of the interval is the sample mean of $\overline{x}$ added to M.

Then, the formula to generate 70% confidence interval is: $[\overline{x} - 0.013, \overline{x} + 0.013]$ , in which $\overline{x}$ is the sample mean.

8 0

2 years ago

7. If P = [5,6,7,8). Q = (2,4,6,8) andR=2, 3, 7, 9), then P nQnR=​

7. If P = [5,6,7,8). Q = (2,4,6,8) andR=2, 3, 7, 9), then P nQnR=