A scuba diver is diving at a constant rate when her team on the surface requests a status update. She looks at her watch which says her elevation is 18 feet below sea level. 8 seconds later, her elevation is 20 feet below sea level. A. At what rate is her elevation changing? Use a signed number, and include the unit of measurement in your answer. B.How many more seconds until she reaches her goal depth of 50 feet? Explain or show your reasoning. C.How many seconds before her team requested an update was the diver at the surface of the water? Explain or show your reasoning.

The equation is 72 = c - 24.

Step-by-step explanation:

f(x) = 3x² - 2x + 7

f(-2) = 3(-2)² -2(-2) + 7

= 3(4) + 4 + 7

= 23

Answer:

t = - 5

Step-by-step explanation:

Given

- 6t = 30 ( divide both sides by - 6 )

t = - 5

Answer:

t = -5

Step-by-step explanation:

Caput succedaneum refers to common benign edema that crosses cranial suture lines and midline that appears on an infant's scalp shortly after birth.

Caput succedaneum is swelling (edema) that affects a newborn's scalp. It most commonly occurs from pressure on the head as the baby moves through the birth canal during a prolonged or difficult vaginal delivery. In caput succedaneum (kuh-PUT sec-seh-DAY-knee-um), fluid builds underneath the scalp, causing swelling.

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The given question is incomplete, so i take similar question

What is swelling that crosses the suture lines on the newborn's head called?

Answer:

5.333333333333

Step-by-step explanation:

converts to 5 1/3

There are \(10^{4}\) = 10,000 different possible musical entertainment lineups that can be created from a list of 10 songs.

This is computed by using the formula for combinations without repetition, which is \(n^{r}\), where n is the number of items in the list and r is the number of items to be selected. In this case, n = 10 and r = 4, which results in \(10^{4}\) = 10,000.

It is important to note that this calculation does not take into account any repetitions of songs, so if the same song appears more than once in the list, then the actual number of possibilities could be less. For instance, if there is a list of 10 songs, but 5 of them are the same, then the number of possible lineups would be\(10^{4/5}\)! = 800, taking into account the repetitions.

To illustrate this further, if we were to list all the possible lineups, then we would end up with 10,000 unique combinations of 4 songs. For instance, a possible lineup could be Song 1, Song 5, Song 8, Song 10. Another possible lineup could be Song 4, Song 7, Song 9, Song 10. This process could be repeated with any combination

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Answer:

x = 125°

Step-by-step explanation:

There are 7 angles in this shape. The sum of the angles in a shape like this is calculated using a formula.

Total of angles

= (n - 2)•180°

Put in 7, because there are 7 angles.

= (7 - 2)•180°

= 5•180°

= 900°

So the total of the angles should be 900°. We know all of the angles except one.

900° = 123°+129°+128°+128°+132°+135°+ x

900° = 775° + x

Subtract 775.

125° = x

The missing angle is 125°.

B. Mean is not resistant to extreme values in a numeric data set. The mean is affected by outliers or extreme values in a dataset because it takes into account all the values in the dataset, including the extreme values.

Central tendency is a measure that is used to find the central or typical value of a set of data. The most common measures of central tendency are mean, median, and mode. These measures provide different ways of summarizing the data, depending on the nature of the dataset and the research question.

The mean is calculated by adding up all the values in a dataset and dividing by the number of values. The mean is often considered to be the most common measure of central tendency because it takes into account all the values in the dataset. However, the mean is not resistant to extreme values or outliers. An outlier is an observation that is significantly different from other observations in the dataset.

When a dataset contains extreme values or outliers, the mean is often affected, resulting in a value that does not represent the central tendency of the dataset. This is because the mean is influenced by every value in the dataset, including the outliers, and is not a robust measure of central tendency. In contrast, the median and mode are resistant to extreme values and provide better estimates of central tendency when a dataset contains outliers.

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Answer:

= 156 app downloaded in 12 days

use: 13x

plug in the amount of day for x.

Step-by-step explanation:

52/4 = 13

13x

13(12) = 156

Ace Carlos

The hands of a clock are perpendicular to each other twice in every 12-hour cycle, once at 3:00 and once at 9:00. Therefore, the petrography contest will be stopped at either 3:00 or 9:00.

To understand why this is the case, we need to consider the angles between the hands of the clock. In a standard clock, the minute hand completes a full revolution (360 degrees) in 60 minutes, while the hour hand completes a full revolution in 12 hours (720 minutes). This means that the minute hand moves 6 degrees every minute (360/60) and the hour hand moves 0.5 degrees every minute (360/720).

When the hands of the clock are perpendicular, the angle between them is 90 degrees. Let x be the number of minutes past some starting time when the hands are perpendicular. At time x, the minute hand will be at x*6 degrees and the hour hand will be at (x/12)*360 + 90 degrees. We want to find the values of x that satisfy the equation (x/12)*360 + 90 - x*6 = 90, which simplifies to x/2 - x/60 = 1. Solving for x, we get x = 30 or x = 360/11, which is approximately 32.73. Since the contest started at 5:00, the two times when the hands are perpendicular to each other fall at 3:00 and 9:00.

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Probability that at least one is a boy given that at least 6 of the children are girls is 1 .

Given,

Family has 7 children and at least six are girls .

Here,

The probability that at least one child is a boy given that at least 6 of the children are girls is 1.

This is because if a parent has 7 children, it is certain that at least one of them must be a boy or a girl. Since we are given that at least 6 of the children are girls, it must be the case that at least one of the remaining children is a boy.

Thus the probability is 1 .

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Answer:

7x+72xy

Step-by-step explanation:

7x+8x(9y)=7x+72xy

cheese balll

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Answer:

both answers are BMobile

Answer:

MyTalk has a lower monthly cost. Based on the graph it seems to be about $25 a month.

MyTalk has a lower cost after 4 months. If you look at the graph, 4 months costs $130 whereas BMobile costs $170 after 4 months.

Question: In a sale, the price of a book is reduced by 25%. The price of the book in the sale is £12. Work out the original price of the book

Answer: £16

Step-by-step explanation:

To determine the original price of the book, we can use the fact that the sale price is 75% (100% - 25%) of the original price. Let's denote the original price as x.

75% of x = £12

To solve for x, we can set up the equation:

0.75x = £12

To isolate x, we divide both sides of the equation by 0.75:

x = £12 / 0.75

x = £16

Therefore, the original price of the book was £16.

The f′(a) when a = −6 is -7. This means that the slope of the tangent line of the graph of f(x) at x = -6 is -7.

To compute f′(a) algebraically for the given value of a, we use the following differentiation rule which is known as the Power Rule.

This states that:If f(x) = xn, where n is any real number, then f′(x) = nxⁿ⁻¹This is valid for any value of x.

Therefore, we can differentiate f(x) = −7x + 5 with respect to x using the power rule as follows:

f(x) = −7x + 5

⇒ f′(x) = d/dx (−7x + 5)

⇒ f′(x) = d/dx (−7x) + d/dx(5)

⇒ f′(x) = −7(d/dx(x)) + 0

⇒ f′(x) = −7⋅1 = −7

Hence, the derivative of f(x) with respect to x is -7.Now, we evaluate f′(a) when a = −6 as follows:f′(x) = −7 evaluated at x = −6⇒ f′(−6) = −7

Therefore, f′(a) when a = −6 is -7. This means that the slope of the tangent line of the graph of f(x) at x = -6 is -7.

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Answer:

Decimal: 0.748, Fraction 374/5 or 74 4/5

Step-by-step explanation:

Answer:

The answer is 374/5

Step-by-step explanation:

Ehdfsbsbdhusgdbrvdhshdv I am putting letter do not pay attention to it

the confidence interval for the Six-Sigma certification exam with 90% confidence is between 57 and 81. This means that there is a 90% chance that the true population mean score falls within this range.

the center producing standardized exams for certifications only had access to a small sample of scores for the Six-Sigma certification exam. In order to better understand the exam, they used the confidence interval formula with a confidence level of 90%. The resulting values indicate the range in which the true population mean score is likely to fall.

based on the confidence interval obtained, we can be 90% confident that the population mean score for the Six-Sigma certification exam is between 57 and 81. It is important to note that this only applies to the sample taken and that the true population mean score could be different, but it is likely to be within this range with 90% confidence.

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The correct option regarding the 95% confidence interval for this problem is given as follows:

A. The confidence interval from the first simulation is (0.187, 0.237), and the confidence interval from the second simulation is (0.209, 0.261). For the first trial, we are 95% confident the true proportion of wins with the new game strategy is between 0.187 and 0.237. For the second trial, we are 95% confident the true proportion of wins with the new game strategy is between 0.209 and 0.261.

A confidence interval of proportions has the bounds given by the rule presented as follows:

\(\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}\)

In which the variables used to calculated these bounds are listed as follows:

The confidence level is of 95%, hence the critical value z is the value of Z that has a p-value of \(\frac{1+0.95}{2} = 0.975\), so the critical value is z = 1.96.

The parameters for the first simulation are given as follows:

\(n = 1000, \pi = \frac{212}{1000} = 0.212\)

Hence the lower bound of the interval is of:

\(0.212 - 1.96\sqrt{\frac{0.212(0.788)}{1000}} = 0.187\)

The upper bound is of:

\(0.212 + 1.96\sqrt{\frac{0.212(0.788)}{1000}} = 0.237\)

For the second simulation, the parameters are given as follows:

\(n = 1000, \pi = \frac{235}{1000} = 0.235\)

Hence the lower bound of the interval is of:

\(0.235 - 1.96\sqrt{\frac{0.235(0.765)}{1000}} = 0.209\)

The upper bound is of:

\(0.235 + 1.96\sqrt{\frac{0.235(0.765)}{1000}} = 0.261\)

This means that option A is the correct option.

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The negative multinomial log-likelihood (Equation 10.14) is equivalent to the negative log of the likelihood expression (Equation 4.5) when there are 'm' categories.

Let's start by defining the negative multinomial log-likelihood (Equation 10.14) and the likelihood expression (Equation 4.5).

The negative multinomial log-likelihood (Equation 10.14) is given by:

L(θ) = -∑[i=1 to m] yₐ log(pₐ)

Where:

L(θ) represents the negative multinomial log-likelihood.

θ is a vector of parameters.

yₐ is the observed frequency of category i.

pₐ is the probability of category i.

The likelihood expression (Equation 4.5) is given by:

L(θ) = ∏[i=1 to m] pₐ

Where:

L(θ) represents the likelihood.

θ is a vector of parameters.

yₐ is the observed frequency of category i.

pₐ is the probability of category i.

To show the equivalence between the negative multinomial log-likelihood and the negative log of the likelihood expression, we need to take the logarithm of Equation 4.5 and then negate it.

Taking the logarithm of Equation 4.5:

log(L(θ)) = ∑[i=1 to m] yₐ log(pₐ)

Negating the logarithm of Equation 4.5:

-N log(L(θ)) = -∑[i=1 to m] yₐ log(pₐ)

Comparing the negated logarithm of Equation 4.5 with Equation 10.14, we can see that they are equivalent expressions. Therefore, the negative multinomial log-likelihood is indeed equivalent to the negative log of the likelihood expression when there are 'm' categories.

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Answer:

Here you go!

Step-by-step explanation:

Answer:

If circles A and B are congruent, then AC, CD, DB, and BA are all congruent since they are all radii. We then have:

ACDB is a rhombus.

ADB is an equilateral triangle.

CD is perpendicular to AB.

CD bisects AB.

Answer:

Explanation:

-240 = 8y

8y = -240

8y / 8 = -240 / 8

- PNW

The given points are

These are complex numbers. They work as two-coordinates points because complex numbers have a real part and a complex part. The real part is the horizontal coordinate, and the complex part is the vertical coordinate.

To find the midpoint, we use the following formula

Answer:

where is it?

Step-by-step explanation:

Answer:

x = -11.2

Step-by-step explanation:

0.1 + 0.2x + 0.3 + 0.05x = -2.4

Combine like terms on the left side.

0.25x + 0.4 = -2.4

Subtract 0.4 from both sides.

0.25x = -2.8

Divide both sides by 0.25.

x = -11.2

Answer:

D

Step-by-step explanation:

please give brainliest!

for example -3 + 6 is 3. --positive sign

-9+8 is -1 --negative sign

Answer:

Step-by-step explanation:

12 is 40% of what number?

30.

what is 60% of 30?

18

boom

Answer:

No, they are not similar to each other because they are not proportional to each other.

Step-by-step explanation:

A proportional statement with both of these triangles would look like this :

8/16 = 12/12

That is not a true statement, so the triangles aren't similar :)

Answer:

No, they are not similar because are not proportional

Step-by-step explanation:

Set up proportion and simplify to check:

8/12 = 16/12

Left side is 0.6, right side is 1.3

These are not the same so no this would not work.

Answer:

Zach chose C as the correct answer