Which intervals show f(x) increasing? choose two options. [–2.5, –1.6) [–2, –1] (–1.6, 0] [0, 0.8) (0.8, 2)

Maria gets 1/12 of the chips.

Lilly has 1/3 of chips. She gives Maria 1/4 of what she has to Maria. To find the fraction that Maria gets, we need to multiply the fraction Lilly gives to Maria (1/4) by the fraction of chips Lilly has (1/3).

Multiplying fractions involves multiplying the numerators and multiplying the denominators. So, multiplying 1/4 and 1/3 gives us (1 * 1) / (4 * 3), which simplifies to 1/12.

Therefore, Maria gets 1/12 of the chips.

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Since the training set consists of 40 observations, you would need to fill in the counts for each category based on the actual classifications made by the model using the 0.5 cutoff value.

To construct the confusion matrix for a 40-observation training set, we need to use a cutoff value of 0.5 to classify each profile observation as either interested or not interested. The confusion matrix is a tool that shows the performance of a classification model.

Let's denote the four possible outcomes as follows:
- True Positive (TP): The model correctly classified an observation as interested.
- True Negative (TN): The model correctly classified an observation as not interested.
- False Positive (FP): The model incorrectly classified an observation as interested when it was actually not interested.
- False Negative (FN): The model incorrectly classified an observation as not interested when it was actually interested.

Since we have a cutoff value of 0.5, any observation with a prediction score above or equal to 0.5 will be classified as interested, while any observation with a prediction score below 0.5 will be classified as not interested.

Based on this information, we can construct the confusion matrix:

                   Predicted Interested   Predicted Not Interested
Actually Interested       TP                           FN
Actually Not Interested    FP                           TN

Note that the values TP, TN, FP, and FN are counts of observations falling into each category.

In your case, since the training set consists of 40 observations, you would need to fill in the counts for each category based on the actual classifications made by the model using the 0.5 cutoff value.

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The magnitude of the vector sum u+v is √145.

To find the magnitude of the vector sum u+v, we first add the corresponding components of the vectors:

(3+9, 2+(-3)) = (12, -1).

Next, we square each component and sum the results:[tex]12^2 + (-1)^2 = 145.[/tex]

Finally, we take the square root of the sum to find the magnitude: √145.

Therefore, |u+v| = √145.

In conclusion, the magnitude of the vector sum u+v is √145.

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Ronald Christian's 2014 earnings were approximately 3,066.67 can be written as 3 × 10³ times as large as Forest Thorton's earnings.

To determine approximately how many times as large Ronald Christian's 2014 earnings were compared to Forest Thorton's earnings, we can divide Ronald Christian's earnings by Forest Thorton's earnings.

Ronald Christian's 2014 earnings: $92,000,000

Forest Thorton's 2014 earnings: $30,000

Approximately how many times as large were Ronald Christian's 2014 earnings as Forest Thorton's earnings:

$92,000,000 / $30,000 ≈ 3,066.67

3066.67 = 3 × 10³

Therefore, Ronald Christian's 2014 earnings were approximately 3,066.67 times as large as Forest Thorton's earnings.

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The question is incomplete the complete question is :

The measurement of the three minor arcs formed by the points of tangency are : 120° , 110° and 130°

We have the following information available from the question is:

A circle is inscribed within ΔPQR . If m ∠P = 50° and m ∠Q = 60°.

We have to find the measurement of the three minor arcs formed by the points of tangency.

Now, According to the question:

The minor arc are AB, BC and AC.

We use the theorem which states that if two secants , a secant and a tangent, or two tangents intersect in the exterior of a circle, then the measure of the angle formed is one half the difference of the measure

of the intercepted arcs.

Find m AB using vertex Q:

m ∠Q = 1/2(m ACB - m AB)

60 = 1/2[(360 - m AB) - m AB]

120 = (360 - m AB) - m AB

120 = 360 - 2m AB

2m AB = 240

m AB = 120

Find m BC using vertex R:

m ∠R = 1/2(m BAC - m BC)

70 = 1/2[(360 - mBC) - mBC]

140 = (360 - mBC) -m BC

140 = 360 - 2m BC

m BC = 110

Find m AC using vertex P:

m ∠P = 1/2(m ABC - m AC)

50 = 1/2[(360 - m AC) - m AC]

100 = (360 - m AC) -m AC

100 = 360 - 2m AC

2m AC = 260

Hence, the measurement of the three minor arcs formed by the points of tangency are : 120° , 110° and 130°.

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Complete question is:

A circle is inscribed within ΔPQR . If m ∠P = 50° and m ∠Q = 60° and find the measurement of the three minor arcs formed by the points of tangency.

the composite function that can be used to determine the height, in meters, of the flare at any given time is:
h_meters(t) = 0.3048 * h(t)

To determine the height of the flare in meters at any given time, we can use the composite function. The composite function is obtained by converting the height in feet to meters.

The conversion factor to convert feet to meters is 0.3048. So, we can multiply the height in feet by 0.3048 to get the height in meters.

Therefore, the composite function that can be used to determine the height, in meters, of the flare at any given time is:

h_meters(t) = 0.3048 * h(t)  Where h(t) is the height of the flare in feet, and h_meters(t) is the height of the flare in meters.

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Let's assume the number of complete packs of cherry gum is c1 and the number of complete packs of grape gum is c2. The number of loose pieces of cherry gum is l1, and the number of loose pieces of grape gum is l2.

According to the given information, we have the following equations:

c1 * x + l1 = 20 (equation 1)

c2 * x + l2 = 30 (equation 2)

If Chewbacca loses one pack of cherry gum, the new ratio of the number of pieces of cherry gum to the number of pieces of grape gum will be the same as if he instead finds 5 packs of grape gum.

This can be represented as:

[(c1 - 1) * x + l1] / (c2 * x + l2 + 5 * x) = (c1 * x + l1) / (c2 * x + l2)

Simplifying the equation, we have:

[(c1 - 1) * x + l1] = (c1 * x + l1) * (c2 * x + l2 + 5 * x) / (c2 * x + l2)

Expanding and simplifying further:

(c1 - 1) * x + l1 = (c1 * x + l1) * (c2 + 6) / c2

Let's now substitute the values for c1, l1, and c2:

From equation 1: c1 * x + l1 = 20

From equation 2: c2 * x + l2 = 30

Substituting these values, we get:

(20 - 1) * x + l1 = (20 * x + l1) * (c2 + 6) / c2

Simplifying:

19x + l1 = (20x + l1) * (c2 + 6) / c2

Since we are looking for the value of x, we need another equation to solve for it. Unfortunately, we do not have enough information or constraints in the given problem to determine the exact value of x. Additional information or equations are required to solve for x.

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As given, the 99% confidence interval is (-0.13, 0.37).

To check if the coffee shop owner's claim is justified, we can check if the confidence interval contains zero. If it does, then we cannot reject the null hypothesis (the claim), and if it doesn't, then we reject the null hypothesis.

In this case, the interval (-0.13, 0.37) contains zero, hence we cannot reject the null hypothesis at a 99% level of confidence. Therefore, we can say that there is not enough evidence to support the owner's claim that customers who drink espresso are less likely to use their own cup compared with customers who drink coffee.

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the correct order from least to greatest is:

(1-x²)/(1-2x) < (3x²+1)/2(x-1) < (x²-1)/(1-2x) < (2x²-x)/2

When x = -2, let's evaluate each expression to determine their values:

Expression 1: (1 - x²) / (1 - 2x)

Substituting x = -2:

(1 - (-2)²) / (1 - 2(-2))

= (1 - 4) / (1 + 4)

= -3/5

Expression 2: (x² - 1) / (1 - 2x)

Substituting x = -2:

((-2)² - 1) / (1 - 2(-2))

= (4 - 1) / (1 + 4)

= 3/5

Expression 3: (2x² - x) / 2

Substituting x = -2:

(2(-2)² - (-2)) / 2

= (2(4) + 2) / 2

= 8/2

= 4

Expression 4: (3x² + 1) / (2(x - 1))

Substituting x = -2:

(3(-2)² + 1) / (2((-2) - 1))

= (3(4) + 1) / (2(-3))

= (12 + 1) / (-6)

= 13 / -6

= -13/6

Now, let's arrange the expressions in increasing order of their values:

-3/5 < -13/6 < 3/5 < 4

Therefore, the correct order from least to greatest is:

(1-x²)/(1-2x) < (3x²+1)/2(x-1) < (x²-1)/(1-2x) < (2x²-x)/2

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Complete question is below

Drag each tile to the correct box. arrange the expressions in increasing order of their values when x= -2

(1-x²)/(1-2x), (x²-1)/(1-2x), (2x²-x)/2, (3x²+1)/2(x-1)

The given data in the problem is utilized to calculate the weekly rated capacity in standard hours which comes out to be 616.

The given data is as follows:

No. of machines= 7

Operating hours per day= 16

Operating days in a week= 5

Utilization= 80%

Efficiency= 110%

In order to find out the rated weekly capacity, we need to use the below formula:

Rated Weekly Capacity = No. of Machines × Operating hours per day × Operating days per week × Utilization × Efficiency

Now, let's put the values in the above formula.

Rated Weekly Capacity = 7 × 16 × 5 × 80% × 110%

Calculating the above expression, we get,Rated Weekly Capacity = 616

Therefore, the rated weekly capacity is 616 standard hours.

: Rated Weekly Capacity is found out using the formula, Rated Weekly Capacity = No. of Machines × Operating hours per day × Operating days per week × Utilization × Efficiency. The given data in the problem is utilized to calculate the weekly rated capacity in standard hours which comes out to be 616.

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The rejection region for a hypothesis test can be found, we need to specify the significance level (α) and the test statistic distribution.

Given that the question mentions "t" and asks us to round to three decimal places, we can infer that we are dealing with a t-test and should use the t-distribution.

The rejection region for a t-test is located in the tails of the t-distribution. The specific critical values depend on the degrees of freedom and the significance level (α).

Since the question does not provide the degrees of freedom or the significance level, we cannot provide a specific answer. However, I can explain the general procedure:

1. Determine the degrees of freedom based on the sample size and test conditions.
2. Determine the critical value(s) for the desired significance level (α) from the t-distribution table or a statistical software.
3. If the calculated test statistic (t) falls within the rejection region (tails of the t-distribution), we reject the null hypothesis (H0). Otherwise, we fail to reject the null hypothesis.

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The given information states that the sum of the measures of angles 6 and 8 is equal to 180 degrees, i.e., m∠6 + m∠8 = 180 so this is a property of a straight angle.

To solve step by step, we start with the given information: m∠6 + m∠8 = 180. This equation indicates that the sum of angles 6 and 8 is equal to a straight angle, which measures 180 degrees.

By the Converse of the Corresponding Angles Postulate, we can conclude that lines 6 and 8 are parallel. This postulate states that if two lines are cut by a transversal, and the corresponding angles are congruent or supplementary, then the lines are parallel.

Therefore, based on the given equation, we can justify that lines 6 and 8 are indeed parallel.

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The recurrence relation for an, the number of ways she can choose sauces across n days, can be defined as
an = an-1 + an-2 + 2, for n > 1


- On day n, she can choose the same sauce as the previous day (an-1) or the same sauce as two days ago (an-2).
- In addition to these options, she can also choose two different sauces on day n.

-Therefore, the total number of ways she can choose sauces on day n is equal to the sum of the number of ways she can choose sauces on the previous day (an-1), the number of ways she can choose sauces two days ago (an-2), and 2 (for choosing two different sauces on day n).

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The chi-square test for proportions at a significance level of 0.10, there is not enough evidence to support the director's claim that the percentage of insured patients is different from the expected percentage of 79%.

To test the claim that the percentage of insured patients in the emergency room is not the expected percentage of 79%, we can perform a hypothesis test using a significance level of 0.10.

Let's go through the steps of the hypothesis test:

Step 1: State the hypotheses:

The null hypothesis (H₀): The percentage of insured patients is 79%.

The alternative hypothesis (H₁): The percentage of insured patients is not 79%.

Step 2: Formulate the test statistic:

In this case, we will use the chi-square test for proportions. This test compares the observed proportions with the expected proportions under the null hypothesis.

Step 3: Set the significance level:

The significance level (α) is given as 0.10, which implies a 10% chance of rejecting the null hypothesis when it is true.

Step 4: Calculate the test statistic:

First, we need to calculate the expected number of insured patients under the null hypothesis. Since we know that the expected percentage is 79% and the sample size is 380, we can calculate the expected count as:

Expected count of insured patients = 380 * 0.79 = 300.2

Next, we can set up a chi-square test statistic formula:

χ² = Σ[(O - E)² / E]

where Σ denotes the sum, O is the observed count, and E is the expected count.

Using the observed count of 285 and the expected count of 300.2, we can calculate the chi-square test statistic.

χ² = [(285 - 300.2)² / 300.2] = 0.746

Step 5: Determine the critical value:

The critical value for the chi-square test is based on the significance level and the degrees of freedom. In this case, since we have one category (insured vs. not insured) and we are comparing to an expected proportion, the degrees of freedom is 1.

At a significance level of 0.10 and 1 degree of freedom, the critical chi-square value is approximately 2.706.

Step 6: Make a decision:

Compare the calculated test statistic to the critical value. If the test statistic is greater than the critical value, we reject the null hypothesis. Otherwise, we fail to reject the null hypothesis.

In this case, 0.746 < 2.706, so we fail to reject the null hypothesis.

Step 7: Conclusion:

Based on the analysis using the chi-square test for proportions at a significance level of 0.10, there is not enough evidence to support the director's claim that the percentage of insured patients is different from the expected percentage of 79%.

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The solution to the equation 2/9 x-4 = 2/3 is x = 21.

To solve the equation, we'll isolate the variable x by performing the necessary operations step by step. Here's how to solve it:

Begin with the equation:

(2/9)x - 4 = 2/3.

Let's first eliminate the -4 term on the left side by adding 4 to both sides of the equation:

(2/9)x - 4 + 4 = 2/3 + 4.

This simplifies to:

(2/9)x = 2/3 + 12/3.

Combining the fractions on the right side gives:

(2/9)x = 14/3.

To get rid of the coefficient (2/9) multiplying x, we can multiply both sides of the equation by the reciprocal of (2/9), which is (9/2):

(9/2) * (2/9)x = (9/2) * (14/3).

This yields:

(9/2) * (2/9)x = 63/3.

The left side simplifies to:

x = 63/3.

Simplifying the right side gives:

x = 21.

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Step-by-step explanation:

you mean it is 6° less, right ?

supplement means together they have 180°.

complement means together they have 90°.

x is our angle.

180 - x is the supplement angle.

90 - x is the complement angle.

180 - x = 90 - x - 6

90 = -6

you see, that is not possible.

the difference between the supplementary angle and the complementary angle is always 90°.

e.g.

x = 30°

supplement = 180-30 = 150°

complement = 90-30 = 60°

the difference is : 150 - 60 = 90°

x = 80°

supplement = 180 - 80 = 100°

complement = 90-80 = 10°

the difference is : 100 - 10 = 90°

and so on.

so, again, there is no angle that satisfies that criteria.

either you made a mistake in the problem description, or your teacher tried to be tricky.

remember, as x has also a complementary angle, it must be smaller than 90°.

so, the supplementary angle of x must be larger than 90°, and therefore larger than the complementary angle.

there is no angle, for which the supplementary angle is smaller than the complementary angle.

The power calculation for the Kolmogorov-Smirnov test, Cramer von Mises test, Anderson-Darling test, and Shapiro-Wilk test applied to an exponential distribution can be done using statistical software or with the use of critical values from tables. The power of a statistical test is defined as the probability of correctly rejecting the null hypothesis when it is indeed false, i.e., detecting a true difference or effect. In this case, we want to calculate the power of each test to detect departures from an exponential distribution. The power calculation of the tests can be done using the following steps:

Step 1: Set up the null and alternative hypotheses: The null hypothesis (H0) is that the data follows an exponential distribution, and the alternative hypothesis (Ha) is that the data does not follow an exponential distribution.

Step 2: Select the significance level and sample size: Choose a significance level α (usually 0.05) and the sample size n.

Step 3: Generate the data: Generate a sample of size n from the exponential distribution.

Step 4: Compute the test statistic: Compute the test statistic for each test using the generated data. For the Kolmogorov-Smirnov and Cramer von Mises tests, the test statistic is the maximum deviation between the empirical distribution function of the data and the cumulative distribution function of the exponential distribution. For the Anderson-Darling test and Shapiro-Wilk test, the test statistic is a weighted sum of squared deviations between the observed values and the expected values under the null hypothesis.

Step 5: Determine the critical value or p-value, Determine the critical value or p-value of each test for the given significance level α and sample size n. This can be done using statistical software or by consulting tables.

Step 6: Calculate the power: Calculate the power of each test using the critical value or p-value from step 5 and the test statistic from step 4. The power is the probability of correctly rejecting the null hypothesis when it is indeed false.

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In a shuffled 52-card deck with an equal number of clubs, diamonds, hearts, and spades, if the first 10 cards drawn and discarded are 4 hearts, the remaining deck will still have an equal number of each suit.

This is because the initial distribution of suits in the deck is balanced.

Even after discarding the 4 hearts, there will still be an equal number of clubs, diamonds, hearts, and spades in the remaining 42 cards.

The number of ways to choose 4 hearts from the remaining 42 cards can be calculated using the combination formula:
C(42, 4) = 42 / (4!* (42-4)) = 42 / (4* 38!)
Simplifying this expression, we get:
C(42, 4) = 42 * 41 * 40 * 39 / (4 * 3 * 2 * 1) = 311,085
Next, we need to calculate the total number of ways to draw any 4 cards from the remaining 42 cards:
C(42, 4) = 42 / (4 * (42-4) )
Simplifying this expression, we get:
C(42, 4) = 42 * 41 * 40 * 39 / (4 * 3 * 2 * 1) = 311,085
Finally, we can calculate the probability of drawing 4 hearts in the remaining 42 cards:
P(4 hearts) = (Number of ways to draw 4 hearts) / (Total number of ways to draw any 4 cards)
P(4 hearts) = 311,085 / 311,085 = 1
Therefore, the probability of drawing 4 hearts in the remaining 42 cards is 1, or 100%.

Therefore, the conclusion is that the proportion of each suit will remain the same throughout the deck, regardless of the order in which the cards are drawn.

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There will be approximately 1,034 defective parts in a batch of 14,490 parts, based on the rate found by the Quality Control Inspector.

To find the number of defective parts in a batch of 14,490 parts, we can set up a proportion using the rate of defective parts found in the sample.

The proportion can be written as:

15 defective parts / 210 parts = x defective parts / 14,490 parts

To solve for x, we cross multiply and then divide:

15 * 14,490 = 210 * x

217,350 = 210 * x

Dividing both sides by 210:

x = 217,350 / 210

Simplifying the right side:

x ≈ 1,034.29

Therefore, there will be approximately 1,034 defective parts in a batch of 14,490 parts, based on the rate found by the Quality Control Inspector.

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The angle of elevation of the sun can be found using trigonometry. To do this, we need to find the tangent of the angle. The angle of elevation of the sun is approximately 58.21 degrees.


To find the angle of elevation of the sun, we can use the tangent function. The tangent of an angle is defined as the ratio of the opposite side to the adjacent side. In this case, the opposite side is the height of the utility pole, which is given as 35 ft, and the adjacent side is the length of the shadow created by the pole, which is given as 50 ft.

So, we can set up the equation: tan(angle) = opposite/adjacent, which gives us tan(angle) = 35/50. To find the value of the angle, we can take the inverse tangent of both sides: angle = arctan(35/50). Evaluating this expression gives us approximately 0.6435 radians.

To convert this into degrees, we can multiply the radians value by 180/π (180 divided by π) since there are π radians in 180 degrees. Multiplying 0.6435 radians by 180/π gives us approximately 36.87 degrees. Therefore, the angle of elevation of the sun is approximately 36.87 degrees.

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If one of the female student is chosen, and she is in to be in a research scientist. The probability of the female student will be 4.6417%.

Total female students = 2219 (refer the picture below)

total female in research science department = 103 (refer the picture below)

calculating the probability that the chosen student is a future research scientist

= female research scientist ÷ female total

= 103/ 2219

= 0.046417

now, to calculate the probability that the chosen student is a future research scientist as percentage, multiply 0.046417 by 100.

By multiplying it with 100, we get the percentage as

= 0.046417 × 100

= 4.6417%.

Therefore, The probability of the female student will be 4.6417%.

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The question is -

the two-way table shows the attendant careers among the incoming class of first-year college students, divided by gender. If a female student is chosen at random, what is the probability that she intends to be a research scientist? (also, refer the picture) .

In order for the experiment to be statistically significant, the research team needs to obtain results that show a significant difference between the new security system and the previous version using the t-test or chi-square test.

The results from the  t-test or chi-square test should provide evidence that the new security system is more effective than the previous version with a high level of confidence.

T o establish statistical significance, the team needs to compare the results to a predetermined significance level, typically denoted as α (alpha).

This significance level is often set at 0.05, meaning that the probability of obtaining the observed results due to chance alone is less than 5%. If the p-value (the probability of obtaining the observed results) is less than the significance level, the team can conclude that the new security system is statistically significantly more effective.

It is important to note that statistical significance does not necessarily imply practical significance or real-world effectiveness. Additionally, the sample size and the power of the statistical test should be taken into consideration when interpreting the results.

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In the given matrix representing a linear system of equations:

3 -1 5

1 2 -1

The y-coefficient of the first equation can be determined by looking at the coefficient of the y variable, which is the element in the second column of the first row. In this case, the y-coefficient of the first equation is -1.

Therefore, the y-coefficient of the first equation is -1.

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The problem can be modeled by the rational equation (2/12) + (3/12) = 1/t, and the solution is t = 12/5 hours (or 2.4 hours).

Problem:

A water tank can be filled by two pipes, Pipe A and Pipe B. Pipe A can fill the tank in 6 hours, while Pipe B can fill the same tank in 4 hours. If both pipes are opened simultaneously, how long will it take to fill the tank?

Solution:

Let's assume that the time it takes to fill the tank when both pipes are opened simultaneously is represented by the variable "t" (in hours).

To solve this problem, we can create a rational equation based on the idea that the combined rate of filling the tank by Pipe A and Pipe B should be equal to the tank's capacity, which is considered as 1.

The rate at which Pipe A fills the tank is 1/6 (as it takes 6 hours to fill the entire tank), and the rate at which Pipe B fills the tank is 1/4 (as it takes 4 hours to fill the entire tank).

When both pipes are opened simultaneously, their rates are additive. Therefore, we can set up the equation:

1/6 + 1/4 = 1/t

Now, let's find a common denominator and solve for "t":

(2/12) + (3/12) = 1/t

(5/12) = 1/t

To solve for "t," we can take the reciprocal of both sides of the equation:

12/5 = t

Therefore, it would take approximately 12/5 hours (or 2.4 hours) to fill the tank when both Pipe A and Pipe B are opened simultaneously.

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The probability of randomly picking a student in the class who is a man or does not own an android based phone is 1289/1300.

To find the probability of randomly picking a student in the class who is a man or does not own an android based phone, we need to calculate the individual probabilities and then add them together.

First, let's find the probability of picking a man. The total number of men in the class is 88, out of a total of 1212 women and 88 men.

Next, let's find the probability of picking a student who does not own an android based phone. The total number of women who don't own android phones is[tex]1212-55 = 1157.[/tex]

Similarly, the total number of men who don't own android phones is [tex]88-44 = 44.[/tex]

So, the total number of students who don't own android phones is [tex]1157+44 = 1201.[/tex]

The probability of picking a student who doesn't own an android phone is [tex]1201/1300.[/tex]

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The t-critical value when completing a 95% confidence t-interval with a sample size of 9 is 2.306.

The t-critical value when completing a 95% confidence t-interval with a sample size of 9 can be calculated using a t-distribution table.

The table contains the t-scores and corresponding probabilities for various degrees of freedom and levels of significance.

In this case, the sample size is n = 9, and we want to find the t-critical value for a 95% confidence interval. The degrees of freedom (df) for a sample of size n = 9 is df = n - 1 = 9 - 1 = 8.

To find the t-critical value, we look at the row for df = 8 and column for a 95% confidence level in the t-distribution table.

From the table, the t-critical value is approximately 2.306.

Therefore, the t-critical value when completing a 95% confidence t-interval with a sample size of 9 is 2.306.

We know that the confidence level is 95%, therefore,\[\alpha = 1 - 0.95 = 0.05\]

So,\[t_{\frac{\alpha}{2}} = t_{\frac{0.05}{2}} = t_{0.025}\]

We are given that the sample size is 9.

Therefore, degrees of freedom (df) will be,\[df = n - 1 = 9 - 1 = 8\]

Using the t-distribution table, the t-critical value for a 95% confidence level and df = 8 is 2.306.

Therefore, the t-critical value when completing a 95% confidence t-interval with a sample size of 9 is 2.306.

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Rounded to the nearest hundredth, the decimal values are:

cos(315°) ≈ -0.71

sin(315°) ≈ -0.71

Utilizing the unit circle and trigonometric identities, we can determine the precise values of the cosine and sine at 315°.

A circle with a radius of one and a center at the origin (0, 0) in a coordinate plane is the unit circle. From the positive x-axis, the angles are measured in the opposite direction of the clock.

To decide the cosine and sine of a point, we take a gander at the directions of the place where the point converges the unit circle.

For 315°, we want to find the point on the unit circle that meets with a point of 315°.

This can be determined by dividing 315° by 360° until we obtain an angle between 0° and 360°.

315° minus 360° gives us -45°, which is the same as 315°. The cosine and sine values will be identical for -45° and 315°, respectively.

For - 45°, the place of the crossing point on the unit circle is (- √2/2, - √2/2).

As a result, 315°'s sine is -2/2, and 315°'s cosine is -2/2.

We can use an approximate calculator to determine the decimal values:

The decimal values are as follows, rounded to the nearest hundredth: cos(315°) -0.71 sin(315°) -0.71

sin(315°) is -0.71 and cos(315°) is -0.71.

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To find the exponent of n in the term that contains m³ in the expansion of (2m - 3n)⁹, we need to use the binomial theorem. The exponent of n in the term that contains m³ in the expansion of (2m - 3n)⁹ is 6.

The binomial theorem states that for a binomial expression (a + b)ⁿ, the coefficient of the term containing a^m * b^n is given by the formula:
C(n, m) * a^m * b^(n-m),
where C(n, m) represents the binomial coefficient and is calculated as:
C(n, m) = n! / (m! * (n-m)!).

In this case, the binomial expression is (2m - 3n)⁹ and we are looking for the term that contains m³.

We can find the exponent of n in this term by subtracting the exponent of m from the overall exponent of 9.

Since the term contains m³, the exponent of m in this term is 3.
Therefore, the exponent of n in this term is 9 - 3 = 6.

So, the exponent of n in the term that contains m³ in the expansion of (2m - 3n)⁹ is 6.

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The solution to the equation p - 21 = 52 is p = 73.

To solve for p, we want to isolate the variable on one side of the equation.

We can do this by performing the same operation on both sides of the equation.

In this case, we add 21 to both sides, resulting in p - 21 + 21 = 52 + 21.

Simplifying further, we have p = 73.

Therefore, the solution to the equation is p = 73.

This means that when p is substituted with 73 in the equation, it satisfies the given equation and makes it true. Solving linear equations involves manipulating the equation using arithmetic operations to isolate the variable.

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To find the value of the trigonometric expression sin 100° cos 170° + cos 100° sin 170°, we can use the trigonometric identities.Therefore, the value of the trigonometric expression sin 100° cos 170°+cos 100° sin 170° is -1.

Now, let's use the trigonometric identity sin(A + B) = sin A cos B + cos A sin B to simplify the expression. In this case,

A = 100° and B = 170°:

sin 100° cos 170° + cos 100° sin 170°

= sin(100° + 170°)

Since sin(100° + 170°)

is not a standard angle, we need to use the addition formula for sine.

The formula states that sin(A + B) = sin A cos B + cos A sin B.

sin(100° + 170°) = sin(270°)

Now, we know that sin(270°) = -1.

herefore, the value of the given trigonometric expression is -1.

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