Mathematics College

Suppose U={ ...,-5,-3,-1,3,5,...} is the universal set and R={1,3,5,...} . What is R’?

Answers

Answer 1

Answer:

R'{-5,-3,-1}

Step-by-step explanation:

R' means not R

Answer 2

Step-by-step explanation:

R' → U - R → The sets that are in U but not in R

so ,

U = { ...,-5,-3,-1,3,5,...}

R = {1,3,5,...}

Hence,

» R` = { -5, -3, -1 }

Related Questions

1. How many variables are involved in the chi-square test?
2. Which type of chi-square test is this?
A.goodness of fit B.test of independence
3. How many degrees of freedom are involved?
4. Using the chi-square critical values table is the result of this rest statistically significant?
A. Yes B.No

Answers

The result of the respective questions are:

This chi-square test only takes into consideration one variable.The type of chi-square test this is is a Goodness of Fitdf= 3NO

How many variables are involved in the chi-square test?

This chi-square test only takes into consideration one variable.

The type of chi-square test this is, is a Goodness of Fit

To test the hypothesis, we must determine whether the actual data conform to the assumed distribution.

The "Goodness-of-Fit" test is a statistical hypothesis test that determines how well the data that was seen resembles the data that was predicted.

Parameter

n = 4

Therefore

Degrees of freedom

df= n - 1

df= 4 - 1

df= 3

In conclusion

Parameters

$\alpha = 0.05$

df = 3

Hence

Critical value = 7.814728

Test statistic = 6.6

Test statistic < Critical value, .

NO, the result of this test is not statistically significant.

Answers

Answer: (8)(-4.5)

Step-by-step explanation:

If you were to multiply-4.5 • -8 that would equal a positive number but if you were to divide (8)(-4.5) it would equal a negative number

Answer:

(8)(-4.5)

Step-by-step explanation:

please mark brainliest

NUMERATOR
DENOMINATOR

4/40

Answers

Answer:

4 = numerator

40 = denominator

Answer:

Step-by-step explanation:

here,

the numerator is 4 ( numerator is the no. on the top )

the denominator is 40 ( the denominator is the no. on the bottom )

Hope this helps

plz mark as brainliest!!!!!

0
According to the Nielsen Media Research, of all the U.S. households that owned at least one television set, 83% had two or more sets, A local cable
company canvassing the town to promote a new cable service found that the 300 randomly selected households visited, 240 had two or more
television sets. At 0.05 level of significance, is there sufficient evidence to conclude that the proportion is less than the one in the report?
Answer Questions 12-23.

Answers

The level of significance on 0.05 exists at 83%.

How to find the level of significance?

The sample size (n) specified by the local cable company exists 300 which exists quite large.

According to the Central limit theorem, the sampling distribution of sample proportion observes a normal distribution with mean p and standard deviation

$$\sqrt{\frac{p(1-p)}{n}}$$

Since the sampling distribution of sample proportions observes a normal distribution utilize the z-test for one proportion to execute the test.

The hypothesis is:

$$H_{0}$$: The proportion of U.S. households that owned two or more televisions exists at 83 %, i.e. p = 0.83

$$H_{1}$$: The proportion of U.S. households that owned two or more televisions exists less than 83 %, i.e. p < 0.83

Decision Rule:

At the level of significance $$\alpha=0.05$$ the critical region for a one-tailed z-test is:

$$Z \leq-1.645$

By using the z table for the critical values.

So, if $$Z \leq-1.645$$ the null hypothesis will be rejected.

Test statistic value:

$$z=\frac{\hat{p}-p}{\sqrt{\frac{p(1-p)}{n}}}$

Here $$\hat{p}$$ exists the sample proportion.

Compute the value of $$\hat{p}$$ as follows:

$$&\hat{p}=\frac{X}{n} \\$ $$&=\frac{240}{300} \\$

= 0.80

To compute the value of the test statistic as follows:

$$z=\frac{\hat{p}-p}{\sqrt{\frac{p(1-p)}{n}}}$$

$$=\frac{0.80-0.83}{\sqrt{\frac{0.83 \cdot(1-0.83)}{3000}}}$$

The test statistic exists at -1.383 which exists more than -1.645.

Therefore, the test statistic lies in the acceptance region.

Thus we fail to reject the null hypothesis.

At a 0.05 level of significance, we fail to reject the null hypothesis noting that the proportion of U.S. households that owned two or more televisions exists at 83%.

To learn more about the level of significance refer to:

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Camden is creating a model of a pyramid. The model created will need to be scaled up from the blueprint.

If segments DE and AB are parallel, which of the following expressions will help Camden determine the length of DC?
DC equals EC times AC all over BC
DC = EC
DC equals EC times AC all over AB
DC = AB

Answers

Answer:

A) DC equals EC times AC all over BC.

Step-by-step explanation:

We know that:

$DE\parallel AB$

Then by corresponding angles:

$\angle CAB\cong \angle CDE\text{ and } \angle CBA\cong \angle CED$

So, by AA-Similarity:

$\Delta CDE\sim \Delta CAB$

Corresponding sides of similar triangles are in proportion. Hence:

$\displaystyle \frac{DC}{AC}=\frac{EC}{BC}$

By multiplying both sides by AC:

$\displaystyle DC=\frac{EC\cdot AC}{BC}$

DC is equal to EC times AC over BC.

Hence, our answer is A.

Answer:

DC equals EC times AC all over BC

Step-by-step explanation:

What is the answer to evaluate. 3³=___________________
Anyone Know

Answers

Answer:

Step-by-step explanation:

3 to the third power is the same as 3 times itself 3 times.

3 * 3 * 3 = 27

-- Gage Millar, Algebra 1/2 tutor

-7(5-3x)=-35 what is the x in the problem

Answers

Answer:

x = 0

Step-by-step explanation:

-7(5-3x)=-35

Divide by -7

-7/-7(5-3x)=-35/-7

5 -3x = 5

Subtract 5 from each side

5-3x-5 = 5-5

-3x=0

Divide by -3

x=0

Answer: x = 0

Step-by-step explanation: Start by distributing the -7 through the parenthses on the left side of the equation.

-7(5) is -35 and -7(-3x) is 21x.

So we have -35 + 21x = -35.

Next, isolate the x term by adding 35 to both sides.

When we do this, we get 21x = 0.

Now divide both sides by 21 and x = 0.

The effectiveness of a blood-pressure drug is being investigated. An experimenter finds that, on average, the reduction in systolic blood pressure is 23.5 for a sample of size 775 and standard deviation 12.2. Estimate how much the drug will lower a typical patient's systolic blood pressure (using a 95% confidence level). Enter your answer as a tri-linear inequality accurate to one decimal place (because the sample statistics are reported accurate to one decimal place).

Answers

The 95% confidence interval for the effectiveness of the blood-pressure drug is given as follows:

$22.6 < \mu < 24.4$

How to obtain the confidence interval?

The mean, the standard deviation and the sample size for this problem, which are the three parameters, are given as follows:

$\overline{x} = 23.5, \sigma = 12.2, n = 775$

Looking at the z-table, the critical value for a 95% confidence interval is given as follows:

z = 1.96.

The lower bound of the interval is then given as follows:

$23.5 - 1.96 \times \frac{12.2}{\sqrt{775}} = 22.6$

The upper bound of the interval is then given as follows:

$23.5 + 1.96 \times \frac{12.2}{\sqrt{775}} = 24.4$

More can be learned about the z-distribution at https://brainly.com/question/25890103

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LONG PROBLEM PLEASE HELP CORRECTIONS DUE ASAP GIVING 50 POINTS AND BRAINLY

Sin angel L =
Cos angel L =
Tan Angel L =

Cos < ___ = y/x

Tan< ___ = y/x

Sin < ____ = y/x

Answers

The trigonometric ratios for this problem are given as follows:

sin(L) = y/x.cos(L) = z/x.tan(L) = y/z.

What are the trigonometric ratios?

The three trigonometric ratios are the sine, the cosine and the tangent, and they are defined as follows:

Sine of angle = length of opposite side to the angle divided by the length of the hypotenuse.Cosine of angle = length of adjacent side to the angle divided by the length of the hypotenuse.Tangent of angle = length of opposite side to the angle divided by the length of the adjacent side to the angle.

For the triangle, we have that:

x is the hypotenuse.z is the adjacent side to angle L.y is the opposite side to angle L.

More can be learned about trigonometric ratios at brainly.com/question/24349828

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a student spends 18 out of 35 of his pocket money on transport and fruit what is the fraction left?

Answers

To find the fraction of pocket money left after spending on transport and fruit, we need to subtract the amount spent from the total pocket money and express it as a fraction.

The student spends 18 out of 35 of his pocket money, which means he has (35 - 18) = 17 units of his pocket money left.

Therefore, the fraction of pocket money left can be written as 17/35.

17 units would be your answer

how much is the scale factor if you dilate it until its area is 36?

Answers

Answer:

1/32xp

Step-by-step explanation:

but not sure was there a picture to go with this

what is the missing reason in the proof shown ?

a. symmetric property
b. reflexive property
c. transitive property
d. commutative property

Answers

Answer:

A symmetric property

Step-by-step explanation:

Answer:

Reflexive property

Step-by-step explanation:

What is the quotient? please hurry

8745/53

Answers

Answer:

165

Step-by-step explanation:

The answer is 165.17 or just 165! Hoped I helped :)

What percentage of growth is needed annually to reach 400,000 in 3 years if today I have 200,000

Answers

Answer:

approx 26%

Step-by-step explanation:

you try find the multiplier

200000 * 1. ???? ^3= 400000

rearrange equation

$\sqrt[3]{\frac{400000}{200000} }$ = multiplier

1.25992105

subract one

0.25992105

multiply by 100 to get percentage

25.9%

rounded to whole number = 26%

A computer designer has to build a computer which can executes 300 instructions and represents integers in
$ - {10}^{14} $
to
$ {10}^{14} $
lf one instruction is stored in the entire memory word, what is the maximum memory capacity this computer can occupy?

Answers

The computer can occupy a maximum of 1200 bytes of memory.

To determine the maximum memory capacity of a computer that can execute 300 instructions, we need to consider the representation of integers and the storage requirements for instructions.

If each instruction is stored in the entire memory word, it implies that each instruction occupies one memory word. Therefore, the number of instructions executed (300) directly corresponds to the number of memory words required.

The memory capacity of a computer is typically measured in bytes. However, since we are assuming each instruction occupies one memory word, we can consider the memory capacity in terms of memory words.

Hence, the maximum memory capacity this computer can occupy would be 300 memory words.

To convert this capacity into bytes, we need to know the size of a memory word. If we assume the computer uses a 32-bit word size, which is common in many systems, each memory word would consist of 4 bytes (32 bits / 8 bits per byte). Therefore, the maximum memory capacity in bytes would be:

300 memory words * 4 bytes per word = 1200 bytes.

for more such questions on memory

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Claudia dumped her 200-penny coin collection on the floor and counted the number of pennies that landed heads up. Claudia repeated this process 5 times and had an average of 84 pennies landing heads up on each try. Which of the following statements is true?

A. The theoretical probability of a penny landing heads up is 21/50 .

B. Each penny has a greater probability of landing heads up than tails up.

C. If Claudia had repeated this process fewer times, the average number of pennies landing heads up would be closer to 100.

D. If Claudia had repeated this process more times, the average number of pennies landing heads up would be closer to 100.

Answers

The correct answer is D. If Claudia had repeated this process more times, the average number of pennies landing heads up would be closer to 100.

Here's why:

The average number of pennies landing heads up on each try was 84. This means that out of the 200 pennies in Claudia's collection, on average, 84 of them landed heads up on each try.

The theoretical probability of a penny landing heads up is 1/2. This is because there are two possible outcomes when a coin is flipped - it can either land heads up or tails up - and assuming the coin is fair, each outcome is equally likely.

Each penny does not necessarily have a greater probability of landing heads up than tails up. The probability of a penny landing heads up is 1/2, and the probability of it landing tails up is also 1/2. While it is possible that some pennies in Claudia's collection are biased and more likely to land heads up or tails up, we cannot conclude this based on the information given.

If Claudia had repeated this process fewer times, the average number of pennies landing heads up would not necessarily be closer to 100. In fact, the average would be expected to be more variable with fewer trials, and the actual number of pennies landing heads up could be higher or lower than 84 on each try.

If Claudia had repeated this process more times, the average number of pennies landing heads up would be expected to be closer to 100. This is because the law of large numbers states that as the number of trials increases, the actual results will converge to the theoretical probability. In this case, the theoretical probability of a penny landing heads up is 1/2, which means that as Claudia performs more trials, the actual number of pennies landing heads up will approach 100.

If to DEF?
A 23
B. 16°
C. 32°
D. 58°

Answers

The calculated measure of the angle D is (c) 32 degrees

How to determine the measure of the angle

From the question, we have the following parameters that can be used in our computation:

The triangles ABC and DEF

The triangles are similar triangles

This means that the corresponding angles are equal

Given that

A = 32 degrees

And the corresponding angle is D

We have

D = 32 degrees

Hence, the measure of the angle is (c) 32 degrees

Answers

Answer:

1,944

Step-by-step explanation:

72x27=1,944

Have a wonderful day or night

Answer

1944

Step-by-step explanation:

72*27 = 1944

the image above should clarify how you're actually supposed to do it! couldn't submit this without 20 characters :,)

Which statement about the location of √7 on the number line is true?
A= It is located at the number 7 on the number line.
B= It is located at the number 3.5 on the number line.
C= It is located between the numbers 2 and 3 on the number line.
D=It is located between the numbers 4 and 9 on the number line

Answers

Answer is C) it is located between the numbers 2 and 3 on the number line

Explanation

The square root of a number is “what number times itself”

2 x 2 = 4

3 x 3 = 9

7 is between 4 and 9 so C is the correct answer

write all the numbers less than 100 which are common multiples of 3 and 4

Answers

Answer:

12, 24, 36, 48, 60, 72, 84, 96

Step-by-step explanation:

The smallest natural number that is a common multiple of 3 and 4 is 12. The answer is all multiples of 12 less than 100.

Answer: 12, 24, 36, 48, 60, 72, 84, 96

Find the missing side lengths. Leave your answers as radicals in simplest form
30°
X
10V3
y

Answers

Answer:

x=20

y=10

Step-by-step explanation:

so as you can see this is a 30-60-90 triangle this means that y is opposite the 30 degree angle so it is 10 root three divided by root three so it is ten and x is 2y=20

I am lost on this question i found both but it keeps on telling me i am incorrect

Answers

Answer:

I have completed the answers and attached them to the explanation.

Step-by-step explanation:

Answer:

Step-by-step explanation:

The question asks for a subtraction expression:

length is always a positive number so bigger number first here.

OB = 4-(-1) >only moves in x direction so subtract x's

AB = 4-(-2) >only moves in y direction so subtract y's

verify clairaut's theorem for u=e^xysiny

Answers

yˆ =

$\text{Basic}$
$x$$y$$x^2$$\sqrt{ }$$\frac{x}{ }$
$x\frac{ }{ }$
$x^{ }$$x_{ }$$\degree$$\left(\right)$$\abs{ }$$\pi$$\infty$
x y
0 14
1 23
2 30
3 58

You need a 45% alcohol solution. On hand, you have a 175 mL of a 25% alcohol mixture. You also have 70% alcohol mixture. How much of the 70% mixture will you need to add to obtain the desired solution?

Answers

175 mL at 25% concentration of alcohol contains 0.25 (175 mL) = 43.75 mL of alcohol. If v is the amount of the 70% solution that you use, then that amount contains 0.7v mL of alcohol.

Mixing these two yields a total volume of 175 mL + v, and it contains 43.75 mL + 0.7v alcohol. You want to end up with a concentration of 45%, which means the ratio of the amount of alcohol to the total volume needs to be 0.45:

(43.75 mL + 0.7v) / (175 mL + v) = 0.45

Solve for v :

43.75 mL + 0.7v = 0.45 (175 mL + v)

43.75 mL + 0.7v = 78.75 mL + 0.45v

0.25v = 35 mL

v = 140 mL

A ski resort report it 53.9 inches of snow in November 7 3.75 inches of snow in December and 95.8 inches of snow in January what is the average amount of snow that fell for three months

Answers

Answer:

74.483

Step-by-step explanation:

to get the mean, or the average. you add up all the numbers and divide them by how many there are.

53.9 + 73.75 + 95.8 = 223.45 ÷ 3 = 74.483

Put 1 5/8, -2.35, -4.3, and - 3/5 in order from least to greatest

Answers

Step-by-step explanation:

Numbers:

$1 \frac{5}{8} $

$ - 2.35$

$ - 4.3$

$ - \frac{3}{5} = - 0.6$

From the least to the greatest:

$ - 4.3$

$ - 2.35$

$ - 0.6$

$1 \frac{5}{8} $

just explain how this is "Reflexive Property" (30 points)!!

Answers

The Reflexive Property is a property of equality that states that anything is equal to itself. This property is true for numbers, shapes, angles, and more.

In the context of geometry, the Reflexive Property of Congruence states that any geometric figure is congruent to itself. This includes angles, segments, triangles, and other polygons.

So, when you see "<J ≅ <J", it's saying that angle J is congruent to angle J, which is an application of the Reflexive Property. In other words, any angle is congruent (equal in measure) to itself.

what is the midpoint of-2,2 4,-1

Answers

The midpoint is at (1, 0.5)

Find the area of the trapezoid.
14 mm
15 mm
36 mm
1. 270 mm²
2. 375 mm²
3. 750 mm²
5. 3780 mm²

Answers

Answer: no one cares

Step-by-step explanation:

because it's to hard$\pi \pi \pi \pi \pi \pi \pi \pi \pi \pi \pi \pi \pi \left \{ {{y=2} \atop {x=2}} \right. x_{123} \left \{ {{y=2} \atop {x=2}} \right. \lim_{n \to \infty} a_n \int\limits^a_b {x} \, dx \left \{ {{y=2} \atop {x=2}} \right. \sqrt{x} \sqrt{x} \sqrt{x} \alpha \pi x^{2} x^{2} x^{2} \\ \\ \neq \pi \pi 5069967.94389438.494898 that's the answer$

In Mr.Vargas 7th periodClass 12 out of 32 students received a failing grade what is the percentage of the students who passed

Answers

Answer: 20

Step-by-step explanation:

Answer:

Step-by-step explanation:32-12=20

20+12=32

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