the travel time for a college student traveling between her home and her college is uniformly distributed between 40 and 70 minutes. what is the probability that she will finish her trip in 60 minutes or less? 0.0333 0.3333 0.6667 0.9667

Answer:

Give me brainliest cause this took me time to figure it out

Step-by-step explanation:

If the angles are supplementary, then the sum of their measures is 180 degrees. From the information given in your previous message, we can write the equation: m + (4n + 7) + 26 + (4h + 5) = 180. However, it seems like the value of h is not given. Could you please provide more information or clarify what h represents?

If it’s a triangle, then the sum of the measures of its interior angles is 180 degrees. From the information given in your previous messages, we can write the equation: m + (4n + 7) + 26 = 180. Solving for m and n, we get m = 147 - 4n. However, this equation has infinitely many solutions for m and n. Could you please provide more information or clarify if there are any additional constraints on the values of m and n?

If it’s a square, then all of its interior angles are equal to 90 degrees. From the information given in your previous messages, we can write the equation: m = 4n + 7 = 26 = 4h + 5 = 90. Solving for m, n, and h, we get m = 90, n = 83/4, and h = 85/4. So the values of m, n, and h are 90, 20.75, and 21.25, respectively.

Answer:

Sydney is 28

Step-by-step explanation:

Let's call Daisy D, and call Sydney S.

Daisy is 10 years older.

So D = S + 10

S = D - 10

Sum of their ages = 66.

D + S = 66

D + (D - 10) = 66

2D - 10 = 66

2D = 76

D = 38

If Daisy is 10 years older, Sydney must be 38 - 10 = 28.

to check if we're correct, 38 + 28 = 66.

The equations are x² = y + 16 & 4y - 1 = 7x and the solution is (5, 9)

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

x = first number

y = second number

Given that

The square of the first number is 16 more than the second number

This means that

x² = y + 16

Also, we have the difference expression to be

4y - 1 = 7x

When these equations are solved graphicaly, we have

(x, y) = (5, 9)

Hence, the equations are x² = y + 16 & 4y - 1 = 7x and the solution is (5, 9)

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The coefficient of x^40 in the given expression is 220.

The coefficient of x^40 in the expansion of the given expression can be found using the concept of generating functions and combinatorics.

We can write the given expression as:

(x^3 + x^4 + x^5 + x^6 + x^7 + ...) ^ 4

= (x^3/(1-x) - x^8/(1-x)) ^ 4          [using the formula for infinite geometric series]

Now, we can expand this expression using the binomial theorem. The term x^40 will appear in the expansion of the product only if we choose the terms x^3, x^4, x^5, x^6, x^7, and x^8 in such a way that their sum is equal to 40.

Let the number of times we choose x^3 be a, the number of times we choose x^4 be b, and so on up to x^8 which we choose c times. Then, we have the following equation:

3a + 4b + 5c + 6d + 7e + 8f = 40

We need to find the number of non-negative integer solutions to this equation, which can be found using the concept of stars and bars. We can represent the equation using stars and bars as follows:

***|****|*****|****|***|**

The six bars divide the 40 stars into 7 groups. The number of stars in each group represents the number of times we choose a particular term in the product. Hence, the number of solutions to the equation is equal to the number of ways of arranging the 40 stars and 6 bars, which is (40 + 6) choose 6 = 46C6.

Therefore, the coefficient of x^40 in the given expression is the same as the coefficient of x^7 in the expression (x^3/(1-x) - x^8/(1-x))^4, which can be found by extracting the coefficient of x^7 from the expanded form of the expression. Using this method, we can find that the coefficient of x^7 is 220.

Hence, the coefficient of x^40 in the given expression is 220.

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Answer:

Any number other than 4

Step-by-step explanation:

I think we should first determine what value would make the equation true.

13 = 2x + 5

13 - 5 = 2x

8 = 2x

4 = x

Let's try plugging in 5 for x.

13 = 2 (5) + 5

13 = 10 + 5

13 = 15

Obviously this isn't true. 13 has never equaled

Let's try plugging in 3 for x.

13 = 2(3) + 5

13 = 6 + 5

13 = 11

This can't be true either.

So the two values that make this false are  5 and 3.

In short, this equation has only one value that makes it true. It's 4. Any number other than 4 makes it false.

Triangle EFG was transformed to create triangle E'F'G' with identical side lengths and angle measures, and the second triangle is rotated to the right. the transformation is a c. rotation. Therefore, option c. rotation is correct.

Rotation is the change that took place. A figure is transformed by a rotation in which the centre of rotation is moved from one side to the other. Triangle EFG was in this instance rotated to the right, or around a point to the left of the triangle.

The two triangles are said to be congruent if their side lengths and angle measurements are the same. As a result, they are capable of being changed into one another by a series of translations, rotations, and reflections.

A transformation known as a translation involves moving a figure while maintaining its original size and shape. Stretching is a transformation that increases a figure's size while maintaining its shape. A transformation that flips a figure over a line is called a reflection.

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Answer: c. rotation is correct.

Step-by-step explanation:

In the equation (3 + x) = 70, x is 67.

An equation is a mathematical statement showing that two or more mathematical expressions are equal or equivalent.

Mathematical expressions combine variables with constants, values, and numbers using mathematical operands like addition, subtraction, division, and multiplication.

On the other hand, equations use the equal symbol (=).

(3 + x) = 70

x = 70 - 3

x = 67

Thus, in the equation (3 + x) = 70, we can conclude that the variable, x, is equal to 67.

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(3 + x) = 70.  How to solve for x.

The scientific notation is [tex]4.3 x 10^{-2}.[/tex]

We have,

8.6x 10^{12} / 2x 10^{14}

Now,

x gets canceled.

So,

8.6 x 10^{12} / 2 x 10^{14}

Now.

To divide numbers in scientific notation, we divide their coefficients and subtract their exponents:

(8.6 x 10^{12}) / (2 x 10^{14})

= (8.6/2) x 10^{12-14}

= 4.3 x 10^{-2}

Therefore,

8.6 x 10^{12} / 2 x 10^{14} in scientific notation is 4.3 x 10^{-2}.

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Ak is the event that the sum of the dots facing up is k, Bk is the event that the sum is greater than or equal to k, E is the event that the sum is even, and O is the event that the sum is odd. The total number of outcomes, which is 36.

a) To find P[Ak], we need to count the number of ways we can obtain a sum of k and divide by the total number of possible outcomes. This gives P[Ak] = (number of ways to obtain k)/(total number of outcomes) = (number of ways to obtain k)/36. Similarly, P[BX] is the probability of obtaining a sum greater than or equal to X, which is the same as the probability of obtaining a sum of X or more, so we can use the same approach as for P[Ak].

b) P[O|B8] is the probability that the sum is odd given that it is greater than or equal to 8. To find this, we can use Bayes' theorem: P[O|B8] = P[O and B8]/P[B8]. We can calculate P[O and B8] by counting the number of outcomes where the sum is odd and greater than or equal to 8, which is 10 (9, 11, ..., 19), and divide by the total number of outcomes that satisfy B8, which is 25 (8, 9, ..., 12). Therefore, P[O and B8] = 10/36 and P[B8] = 25/36, so P[O|B8] = (10/36)/(25/36) = 2/5.

c) P[A U A11\B8] is the probability that the sum is either 2, 3, ..., 11 or 12, but not 8. To find this, we can add the probabilities of the individual events and subtract the probability of their intersection: P[A U A11\B8] = P[A2] + P[A3] + ... + P[A11] + P[A12] - P[B8]. Note that P[B8] is the probability that the sum is 8 or more, so we can use our previous calculation to find this.

d) P[B80] is the probability that the sum is 8 or more. We can count the number of outcomes where the sum is 8 or more, which is 25 (8, 9, ..., 12), and divide by the total number of outcomes, which is 36.

e) P[B:|B-] is the probability that the sum is even given that it is odd. To find this, we can use Bayes' theorem: P[B:|B-] = P[B: and B-]/P[B-]. We can count the number of outcomes where the sum is even and odd, which is 18, and divide by the total number of outcomes where the sum is odd, which is 18 (1, 3, ..., 11), so P[B: and B-] = 18/36 = 1/2. We can also count the number of outcomes where the sum is odd, which is 18, and divide by the total number of outcomes, which is 36, to find P[B-].

f) P[E|B8] is the probability that the sum is even given that it is greater than or equal to 8. To find this, we can use Bayes' theorem: P[E|B8] = P[E and B.

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When a local used-car lot promises no price haggling, it exhibits price transparency because it provides additional value to potential used-car buyers by making the process simple and easy.

Price transparency refers to a business's openness and clarity regarding its pricing policies and practices. By eliminating haggling and providing a fixed price, the used-car lot is being transparent about the cost of its vehicles. This can be seen as a positive attribute by potential buyers because it eliminates the need for negotiation and can provide a sense of trust and fairness in the buying process. Additionally, by making the process simple and easy, the used-car lot is providing convenience to its customers, which can be a valuable addition to the overall buying experience.

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The probability that you selected a chocolate that is milk chocolate or has no peanut would be = 1/5.

To calculate the probability of the given event the formula for probability would be used and it's given below;

Probability = possible outcome/sample space

number of milk chocolate = 6

number of dark chocolate = 4

Number of chocolate without peanut = 2+3 = 5

possible outcome = 1

sample space = 5

probability = 1/5

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In this problem, we are asked to find the smallest value of n for which the trapezoidal approximation of an integral is guaranteed to have an error less than 0.0001.

To approach this problem, we can use the error formula for the trapezoidal rule, which states that the error is bounded by:

|E| ≤ K/n^2 * (b-a)^3

where K is an upper bound on the second derivative of the integrand over the interval [a, b].

To find the smallest value of n that guarantees an error less than 0.0001, we can solve for n in the inequality:

K/n^2 * (b-a)^3 < 0.0001

This gives us:

n > sqrt(K(b-a)^3/0.0001)

We can use this expression to find the smallest value of n that satisfies the inequality. However, to do so, we need to know the value of K, which depends on the specific integrand and interval. If K is unknown, we can use an upper bound on the second derivative to estimate K, or we can use a more conservative value of K to ensure that the error is always less than 0.0001.

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Answer: Mathematical sentence:

Let the age of the younger friend be x. Then, the age of the elder friend can be expressed as 4x. The sum of their ages is 25, so we can write the equation:

x + 4x = 25

Algebraic expressions:

Let the width of the rectangle be w. Then, the length can be expressed as w + 3.

The perimeter of a rectangle is given by 2(length + width), so we can write the equation:

2(w + (w + 3)) = 34

Algebraic expressions:

Let n represent an unknown number.

a. One-third of the number:

(1/3)n

b. 22 more than 5 times the number:

5n + 22

c. 3 times the number is subtracted from 5 and the result is multiplied by 2:

2(5 - 3n)

Simplification of expression:

0.4x + 7 - 2x - 4 = -1.6x + 3

Evaluation:

45³³ = 45^33 (45 raised to the power of 33)

Step-by-step explanation:

To write the sum of two friends' ages as a mathematical sentence, let the younger friend's age be x and the elder friend's age be 4x. The sum of their ages is given by the equation x + 4x = 25. To find the lengths of a rectangle with a given perimeter, let the width be x and the length be x + 3. The perimeter equation is 2(x + (x + 3)) = 34. To form algebraic expressions, n represents the unknown number. One-third of the number would be n/3, 22 more than 5 times the number is 5n + 22, and 38 times the number subtracted from 5 is 5 - 38n. Finally, to simplify the expression 4x + 7 - 2x - 4 + 17.

To write the given information as a mathematical sentence:

To find the lengths of a rectangle with a given perimeter:

To form algebraic expressions for the given statements:

To simplify the given expression: 4x + 7 - 2x - 4 + 17.

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All five brothers have a total of $100 combined.

Let's assume Peter's total amount of money is P dollars. We are given that 25% of Peter's money is equal to $5,

so we can set up the equation:

0.25P = 5

To solve for P,

we divide both sides of the equation by 0.25:

P = 5 / 0.25 = 20

Now that we know Peter has $20,

we can find out how much money all five brothers have combined. Since Peter and his four brothers combined their money, the total amount would be:

Total = Peter's money + 4 brothers' money

Total = $20 + 4 x (Peter's money)

Total = $20 + 4 x $20

Total = $20 + $80

Total = $100

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the answer is D, x=–1 & x=1

because when we put –1 & 1 in the place of variable x it will be correct as following

when x=–1 16*–1^2+9=25

16*–1*–1+9=25

16*1+9=25

16+9=25

25=25 √

& when x=1 16*1^2+9=25

16*1+9=25

16+9=25

25=25 √

it would be beneficial to analyze other variables such as gender and opinion on the topic for a more comprehensive understanding of the local political opinion.

If the standard deviation of the ages is zero, then all individuals in the sample must have the same age of 25 years old. This means that the sample is not diverse and may not be representative of the entire neighborhood's opinion on the political topic. Therefore, conclusions drawn from this sample may not accurately reflect the opinions of the entire population. It is important to ensure that the sample is diverse and representative to make valid conclusions about a sensitive political topic.
Based on the data you collected, which includes age, gender, and opinion on the local sensitive political topic, you calculated the average age to be 25 years old and the standard deviation of the ages to be zero years old. This means that all individuals in your neighborhood are exactly 25 years old. Since there is no variation in age, it would be beneficial to analyze other variables such as gender and opinion on the topic for a more comprehensive understanding of the local political opinion.

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Well, If you add them all up (3 + 5 + 8) it will be 16. Now we have to make it a fraction (out of blue pens). That will b 8/16. Now we simplify- 1/2. 1/2 as a percent is 50%. The probability is 50%.

The sample mean reduction was 0.95 mmol/l and the sample standard deviation of the reduction amounts was 0.0075 mmol/l.

To find the sample mean reduction, we simply take the midpoint of the confidence interval. The midpoint is the average of the upper and lower bounds, so:
Sample mean reduction = (0.88 + 1.02) / 2 = 0.95 mmol/l
To find the sample standard deviation of the reduction amounts, we need to use the formula for a confidence interval:
Margin of error = Z × (sample standard deviation / √(sample size))
We know that the margin of error for a 95% confidence interval with a sample size of 114 is 0.07 (the difference between the upper and lower bounds). We can solve for the sample standard deviation:
0.07 = 1.96 × (sample standard deviation / √(114))
Sample standard deviation = 0.0075 mmol/l
Therefore, the sample mean reduction was 0.95 mmol/l and the sample standard deviation of the reduction amounts was 0.0075 mmol/l.

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Answer:

origin or y intercept

Step-by-step explanation:

The given expression, 15 / (g - 9), represents a quotient or fraction in which 15 is being divided by the quantity g - 9.

The expression can also be written as a fraction with the numerator being 15 and the denominator being g - 9. The denominator of the expression cannot be equal to zero, as division by zero is undefined. Therefore, the expression is valid for all values of g except g = 9. The expression can also be simplified by factoring out the greatest common factor of 15 and g - 9, if possible.

If we simplify the expression 15 / (g - 9), we get a rational expression in the form of a fraction, where the numerator is a constant (15) and the denominator is a binomial (g - 9). This expression represents the quotient of 15 divided by the difference of g and 9.

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first image: y = 3.02 (3.99)^x

second image: y= 0.4x^2 + 1.6x  + 2.7

third image: when it rains several inches, the water level of a lake increases

fourth image: f(x) = 103.835 − 3.61981x and the correlation coefficient is -0.9093.

fifth image: p(t) = 0.52t + 3.05

The measure of the angles of the triangle DEF will be 38.38°, 61.76°, and 79.86°.

The polygonal shape of a triangle has a number of sides and three independent variables. Angles in the triangle add up to 180°.

By the definition of the triangle, the equation is given as,

2x + 11 + 4x + 7 + 7x - 3 = 180

13x + 15 = 180

13x = 165

x = 13.69

2x + 11 = 2 * 13.69 + 11 = 38.38°

4x + 7 = 4 * 13.69 + 7 = 61.76°

7x - 3 = 7 * 13.69 - 3 = 79.86°

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Step-by-step explanation:

Losing 9.4% per year means 90.6 %  ( .906 in decimal) remains

  the compounding formula :

Population  = 123900 ( .906)^7   would represent the population in 7 years

False. The metric system is a decimalized system of measurement, but it is not used exclusively in the United States.

In fact, the United States primarily uses the U.S. customary system, while the metric system is widely used in most other countries around the world.

Most nations throughout the world use the metric system, a decimal-based measurement system that is universally recognised. It offers a standardised method for gauging temperature, length, mass, and other physical attributes. The metre (for length), kilogramme (for mass), second (for time), ampere (for electric current), kelvin (for temperature), mole (for amount of material), and candela (for luminous intensity) are the basic units of the metric system. Because the metric system is based on powers of 10, converting between units is simple. Global communication and trade are made easier by its promotion of usability, consistency, and compatibility across scientific, industrial, and everyday uses.

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The procedure for revising probabilities based on additional information is referred to as Bayesian updating

The procedure for revising probabilities based on additional information is referred to as Bayesian updating. Bayesian updating is a fundamental concept in Bayesian statistics, which allows for the incorporation of new evidence or data to update and refine prior beliefs or probabilities.

In Bayesian updating, the process begins with an initial prior probability, which represents the initial belief or knowledge about an event or hypothesis before any evidence is observed. As new evidence or data becomes available, it is used to update the prior probability and generate a posterior probability. The posterior probability represents the revised belief or probability after incorporating the new information.

Bayesian updating follows the principles of Bayes' theorem, which mathematically describes the relationship between prior probabilities, likelihoods, and posterior probabilities. It involves combining the prior probability with the likelihood of observing the data given the hypothesis and then normalizing the result to obtain the posterior probability.

The beauty of Bayesian updating is that it allows for a flexible and iterative process of continuously updating beliefs and probabilities as new information emerges. It provides a framework for incorporating both subjective prior beliefs and objective data to make more informed decisions and predictions. Bayesian updating has applications in various fields, including machine learning, decision-making, and scientific research.

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The length of the mural should be 21.5 - 5 = 16.5 feet to maximize its area.

a. The area of the mural can be expressed as the product of its length and width:

Area of mural = length × width

Length = width + 5

Substituting this into the formula for the area of the mural, we get:

Area of mural = (width + 5) × width

Simplifying:

Area of mural = w^2 + 5w

Therefore, the expression for the area of the mural is w^2 + 5w.

b. The area of the frame can be calculated by subtracting the area of the mural from the total area that the frame covers.

The total area covered by the frame is 100 square feet, so:

Area of frame = total area covered by frame - area of mural

Area of frame = (width + 2)(length + 2) - (width)(length)

Substituting the expression for length in terms of width:

Area of frame = (width + 2)(width + 5 + 2) - (width)(width + 5)

Simplifying:

Area of frame = 4w + 14

Therefore, the expression for the area of the frame is 4w + 14.

c. To find how large the mural can be, we need to find the maximum value of the area of the mural while ensuring that the area of the frame is no more than 100 square feet.

So we need to solve the inequality:

Area of frame ≤ 100

4w + 14 ≤ 100

4w ≤ 86

w ≤ 21.5

Since the width of the mural cannot be negative, we take w to be positive:

0 < w ≤ 21.5

Therefore, the maximum width of the mural is 21.5 feet.

Substituting this value into the expression for the area of the mural, we get:

Area of mural = (21.5)2 + 5(21.5) = 536.75 square feet

So the maximum area of the mural is 536.75 square feet.

The given solution that the mural can be 10 or 11 feet long and 11 feet wide is incorrect.

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The power ratio of a 30-dB sound is 501.5 times greater than 3-dB sound.

The number of decibels is ten times the logarithm to base 10 of the ratio of the two power quantities.

To find power ratio, we use the following formula: [tex]Power ratio = 10^{decibels/10}.[/tex]

For a 3-dB sound:

The power ratio is  [tex]10^{3/10}[/tex] = 1.995.

For a 30-dB sound:

The power ratio is [tex]10^{30/10}[/tex] = 1000.

The power ratio of a 30-dB sound greater than 3-dB sound in:

= 1000/1.995

= 501.5 times.

Full question:

A sound that is 3 decibels (dB) has a power ratio of 10^((3/10). A sound that is 30 dB has a power ratio of 1000. How many times greater is the power ratio of a 30-dB sound than a 3-dB sound?

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The number of terms in the polynomial (2·x + 5·y)¹² are 1 thirteen terms

A polynomial is the sum of terms that contains different powers of the variables.

The number of terms in a polynomial in a polynomial of degree n can be found from the expansion of the polynomial as follows;

(2·x + 5·y)¹² = 4096·x¹² + 122880x¹¹·y + 1689600·x¹⁰·y² + 14080000·x⁹·y³ + 79200000·x⁸·y⁴ + 316800000·x⁷·y⁵ + 924000000·x⁶·y⁶ + 1980000000·x⁵·y⁷ + 3093750000·x⁴·y⁸ + 3437500000·x³·y⁹ + 2578125000·x²·y¹⁰ + 1171875000·x·y¹¹ + 244140625·y¹²

The number of terms in the above polynomial are 13 terms, therefore the number of terms in the polynomial (2·x + 5·y)¹² is 13 terms

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The amplitude of 6sin(5t)5cos(5t) can be found using the identity sin(a)cos(b) = (1/2)[sin(a+b) + sin(a-b)]. And the amplitude of 6sin(5t)5cos(5t) is 3.

To find the amplitude of a product of sine and cosine functions, we need to use the identity sin(a)cos(b) = (1/2)[sin(a+b) + sin(a-b)] and identify the coefficients of the sine terms.

The amplitude of a sinusoidal function is the absolute value of its maximum value or half the difference between its maximum and minimum values. For a function of form f(t) = Asin(ωt) + Bcos(ωt), the amplitude is given by √(A² + B²).

In this case, we have the product 6sin(5t)5cos(5t) which can be rewritten using the identity sin(a)cos(b) = (1/2)[sin(a+b) + sin(a-b)] as:

6sin(5t)5cos(5t) = (1/2)[6sin(10t) + 30sin(0)]

= 3sin(10t)

Thus, the amplitude of the product 6sin(5t)5cos(5t) is 3, which is the absolute value of its maximum value.

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