Help me find what CD is pls I can't seem to answer the formula

Answer:

-94%, -.925, -9/10, -8/9

Step-by-step explanation:

-.94, -.8, -.925, -.9

-.94, −0.925, −0.9, -0.8

According to the statement the correct answer is option C - yes, the data are distributed evenly around the line of fit.

To determine if a model is a good fit for a data set, one needs to evaluate how closely the data points align with the line of fit. The line of fit represents the best possible straight line that can be drawn through the data points. If the data points are too far from the line of fit or too close to the line of fit, then it is an indication that the model is not a good fit for the data.
Option A states that the data points are too far from the line of fit, indicating that the model is not a good fit for the data. Option B states that the data points are too close to the line of fit, which is not necessarily a good or bad thing as it depends on the level of accuracy required for the analysis. Option C states that the data points are evenly distributed around the line of fit, which indicates that the model is a good fit for the data. Lastly, option D states that the line of fit touches at least one point in the data set, which is not sufficient to determine if the model is a good fit for the entire data set.
Therefore, the correct answer is option C - yes, the data are distributed evenly around the line of fit.

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Answer:

(-3,6)

Step-by-step explanation:

As  graph shows x=-3 and y=6  

Answer:

-3 to +6 is the answer to the question

Answer: 18.2%

Step-by-step explanation:

Using the color of the pen/the total pen amount you can get 18.1818181818181818... which rounded up to the tenth is 18.2%

Distance (d): 400 km

Time (t)= 8 hours

Direct relation formula: y=kx

Where k is the constant of proportionality.

d=50t

k=50

Constant of proportionality is

Answer:

this is the answer (-3,-6)

Answer:

\(y\geq 0\\y\geq \frac{3}{2}x-3\\ y\leq -x+3\)

Step-by-step explanation:

The region R is surrounded by 4 lines, the first one is y=x+1, the second one is y=0 or the axis x, and the third and fourth one need to be calcualted.

To find the equation of a line through the points (x1,y1) and (x2, y2) we can use the following equation:

\(y-y_1=\frac{y_2-y_1}{x_2-x_1}(x-x_1)\)

Then, our third line is going to be the line that passes through the points (2,0) and (4,3), so the equation is:

\(y=\frac{3-0}{4-2}(x-2)\\y=\frac{3}{2}x-3\)

Our fourth line is the line that passes through the points (3,0) and (0,3), so the equation is:

\(y=\frac{3-0}{0-3}(x-3)\\y=-x+3\)

Then we can say that the other three inequalities are:

\(y\geq 0\\y\geq \frac{3}{2}x-3\\ y\leq -x+3\)

Answer:

0.75 or three-fourth of a cup of nuts.

Step-by-step explanation:

Given that:

Original recipe has

1. One and half cups of peanut butter

2. Unknown number of cups of nuts, let this amount be \(x\) cups.

3. Three very ripe bananas.

Total amount of chips and nuts after doubling = \(4\frac{1}{2}\) cups

Before doubling, total amount of chips and nuts = \(4\frac{1}{2} \div 2 = 2.25\)

Now, as per given question statement:

\(2.25=x+1.5\)

Subtracting the number 1.5 from both the sides to find the value of \(x\):

\(2.25-1.5=x\\\Rightarrow x = \bold{0.75}\)

Therefore, 0.75 or three-fourth of a cup of nuts is the original amount in the recipe.

Answer:

y=5/41x

Step-by-step explanation:

Alright, so we can get imagine two points. Imagine that the y axis is miles and the x axis is minutes. When bianca runs 0 miles, she would have run for 0 minutes, and we know that when Bianca runs 5 miles, she would have run for 41 minutes.

We can use slope formula using the change in y over change in x

\((y1 -y2)/(x1-x2)\\\)

So substituting values, we would get (5-0)/(41-0) or 5/41

slope is the letter m in the formula y=mx+b

so our equation would be \(y=\frac{5}{41}x+b\), b being the y intercept, which would be 0 as you cant run anything when no time has passed

Knowing all of this. the final equation is

\(y=\frac{5}{41}x\)

If your target number of calories to lose weight is 1,703 per day, but you are consuming 2,399 calories per day, then your target is to consume approximately 70% of the calories you are currently consuming.

To find the percentage of the target calories in relation to the current calories, we can divide the target calories by the current calories and multiply by 100. So, the calculation would be:

Percentage = (Target Calories / Current Calories) * 100

Substituting the values, we get:

Percentage = (1,703 / 2,399) * 100 ≈ 70%

Therefore, your target is to consume approximately 70% of the calories you are currently consuming in order to meet your weight loss goal.

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Answer:

The unit rate is: 20 miles/gallon

This means the car travels 20 miles on 1 gal of gas.

Step-by-step explanation:

120 miles/ 6gallons

This means that for every gallon of gasoline, the car travels 20 miles

Answer: y=0.5x+8

Step-by-step explanation:

\(a(1) = 240 \\ a(2) = a(1) + d = 240 + 24 = 264 \\ a(3) = a(2) + d = 264 + 24 = 288 \\ a(4) = a(3) + d = 288 + 24 = 312 \\ a(5) = a(4) + d = 312 + 24 = 336 \\ a(6) = a(5) + d = 336 + 24 = 360\)

Then (a) x = 0 and x = e(1/2) are f's crucial numbers.

(b) To pinpoint the locations where f is rising and falling, we need

(a) To find the critical numbers of f, we need to find where its derivative is equal to zero or undefined. We have:

f(x) = x² (ln x - 1)

f'(x) = 2x (ln x - 1) + x

Setting f'(x) equal to zero and solving for x, we get:

2x (ln x - 1) + x = 0

x (2ln x - 1) = 0

x = 0 or x = e^(1/2)

To check whether f'(x) is undefined at any point, we look for values of x where ln x is undefined. However, ln x is defined for all x greater than 0, so f'(x) is defined for all x greater than 0.

Therefore, the critical numbers of f are x = 0 and x = e^(1/2).

(b) To determine where f is increasing and decreasing, we need to examine the sign of f'(x) on different intervals. We have:

f'(x) = 2x (ln x - 1) + x

f'(x) = x (2ln x + 1) - 2x

f'(x) = x (2ln x + 1 - 2)

f'(x) = x (2ln x - 1)

f'(x) is positive when 2ln x - 1 > 0 or ln x > 1/2, which means x > e^(1/2). Therefore, f is increasing on the interval (e^(1/2), infinity).

f'(x) is negative when 2ln x - 1 < 0 or ln x < 1/2, which means 0 < x < e^(1/2). Therefore, f is decreasing on the interval (0, e^(1/2)).

(c) To find the local minimum and maximum values of f, we need to examine the sign of f'(x) around the critical numbers. We have:

At x = 0, f'(x) = 0 + 0 = 0.

At x = e^(1/2), f'(x) = 2e^(1/2) (ln e^(1/2) - 1) + e^(1/2) = 0.

Therefore, both x = 0 and x = e^(1/2) are critical points of f.

To determine whether they are local minimum or maximum points, we need to examine the sign of f''(x) at these points. We have:

f''(x) = 2(ln x - 1) + 2 + x/x

f''(0) = 2(ln 0 - 1) + 2 + 0/0 = undefined

Therefore, x = 0 is not a local minimum or maximum point.

f''(x) = 2(ln x - 1) + 2 + x/x

f''(e^(1/2)) = 2(ln e^(1/2) - 1) + 2 + e^(1/2)/e^(1/2) = 1/e^(1/2) > 0

Therefore, x = e^(1/2) is a local minimum point of f.

(d) To find where f is concave upward and concave downward, we need to examine the sign of f''(x) on different intervals. We have:

f''(x) = 2(ln x - 1) + 2 + x/x

f''(x) is positive when ln x -

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Answer:

BODMAS

Step-by-step explanation:

BODMAS is correct.

Brackets

Of

Division

Multiplication

Addition

Subtraction

Answer:

see explantion

Step-by-step explanation:

The selling price is ​$495.

The first washing machine:

- is marked down by 30​%

$495 - 100%

$x - 100% - 30% = 70%

Find the value of x:

The second washing machine:

- is marked down by 20​% with an additional 10​% off

$495 - 100%

$y - 100% - 20% = 80%

Find y:

Now,

$396 - 100%

$z - 100% - 10% = 90%

Find z:

Thus, the sale price of the first washing machine is $347 and the sale price of the second washing machine is $356. The second machine is more expensive.

Therefore, the predicted difference in sales between two women's clothing stores differing by $30,000 is $217,500, which is option E.

Given a regression equation is y = 5000 + 7.25x, where y is the predicted sales value (in dollars) and x is advertising budget (in dollars).To find the predicted difference in sales of two stores which differ by $30,000 in advertising budget. Here, the slope of the line is 7.25. This means that for every dollar increase in advertising budget, sales will increase by $7.25. Therefore, a $30,000 difference in advertising budget will lead to a difference in sales of:7.25 × 30,000 = 217,500Therefore, the predicted difference in sales between two women's clothing stores differing by $30,000 is $217,500, which is option E.

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Answer:

cosecA

Step-by-step explanation:

Answer:

5579183747482837371828282

a) The explanatory variable in the study is the format of the stories presented to the four-year-olds: audio, illustrated, and animated. This variable is categorical because it involves distinct categories or formats.

b) The response variable in the study is the brain connectivity measured by the magnetic resonance imaging (MRI) machine. This variable is quantitative as it represents a numerical measurement of brain connectivity.

c) The study includes 27 four-year-olds as the observational units or individuals.

The study aimed to investigate the impact of different story formats on brain connectivity in four-year-olds. The explanatory variable, format, was categorized into three groups: audio, illustrated, and animated.

The response variable, brain connectivity, was measured using an MRI machine. The researchers found a "Goldilocks effect" in the brain connectivity, indicating that the audio format was associated with low brain connectivity, possibly due to the children straining to understand.

On the other hand, the animated format also resulted in low brain connectivity, suggesting that the animation did all the work for the children.

The highest brain connectivity, considered optimal, was observed with the illustrated format, which simulated the experience of reading a book to a child.

The study included 27 four-year-olds as the observational units, providing insights into the relationship between story format and brain connectivity in young children.

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The standard form of the equation of a quadratic function is y = 1/2x² + 3x/2 - 5.

What is a quadratic function?

A polynomial of degree two in one or more variables is referred to as a quadratic polynomial. The polynomial function that a quadratic polynomial defines is known as a quadratic function.

Here, we have

Given: a quadratic function with roots of 2 and −5 that passes through (1, −3).

The required equation has the form:

y = a(x-2)(x+5)

because each root value will force y to be zero. To find a, substitute the point given, (1,-3), into this equation and then solve for a:

-3 = a(1-2)(1+5)

-3 = a(-1)(6)

-3 = -6a

a = 1/2

So, the required equation is:

y = 1/2(x-2)(x+5)

Next, expand and simplify:

y = 1/2(x²+3x-10)

y = 1/2x² + 3x/2 - 5

Hence, the standard form of the equation of a quadratic function is y = 1/2x² + 3x/2 - 5.

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The amount of gas a car holds depends on the size of the car. Smaller cars generally have gas tanks that hold 12 gallons worth of gas, while larger cars can hold 15 or 16 gallons.

The probability of selecting two orange markers is 2/6 * 1/5 = 1/15.

What is non-replacement event?

Components that have not been altered typically have content that is present within the document, whereas elements that have been replaced typically have content that is present outside of the document.

Given that there are 3 green, 1 purple, and 2 orange markers.

Total number of markers is (3 + 1 + 2) = 6.

The probability of an event is the ratio of the number of outcomes of a favorable event to the total number of outcomes.

The probability that the first marker is orange is 2/6 = 1/3.

After picking the number of markers that left is (6 - 1) = 5.

The number of orange marker that left is 2 - 1 = 1.

The probability that the second marker is orange is 1/5.

The probability of selecting two orange markers is (1/3) × ( 1/5) = 1/15.

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Answer:

He cannot save $5 when he is buying something instead of making it himself.

Step-by-step explanation:

He makes $10 from lawn mowing and spends $5 on Taco Bell. He has $5 left.

If he made is lunch, He would have had $10 dollars.

Andrew's argument is flawed because he is not considering all of the costs and benefits associated with his decision to go to Taco Bell instead of preparing his own meal.

An argument is a collection of claims, the premises of which are provided in support of another statement, the conclusion.

There are a few problems with Andrew's argument.

First, he is assuming that the only cost of preparing his own meal is the price of the ingredients. However, there are also opportunity costs associated with preparing his own meal, such as the time he spends making it and the opportunity to do something else during that time (such as study for his exam).

Second, Andrew is assuming that he would have spent the same amount of money on ingredients as he did on his meal at Taco Bell. However, it is possible that the ingredients he would have used to make his own meal would have cost less than $5, in which case he would not have saved as much money as he thinks.

Finally, Andrew is assuming that he would have spent the same amount of time preparing his own meal as he did going to Taco Bell. However, it is possible that it would have taken him longer to prepare his own meal, in which case the opportunity cost of his time would have been even higher.

Overall, Andrew's argument is flawed because he does not evaluate all of the expenses and advantages of his decision to eat at Taco Bell instead of cooking his own dinner.

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Answer:

2.7 miles

Step-by-step explanation:

25 - 10.4 - 4.5 - 7 2/5 will give you 2.7

Answer:

8 miles

Step-by-step explanation:

If we divide 70 by 50, we get the unit rate for the ratio 70 minutes for every 50 miles.

70÷50=1.4

So the runner is running 1.4 minutes per mile. We can multiply this unit rate by the number of miles:

1.4 minutes mile × 5 miles = 7 minutes

Thus it will take her 7 minutes to run 5 miles at this pace.

If it takes her 7 minutes to run 5 miles, it will take her 7÷5 = 1.4 minutes to run 6÷3=2 miles at the same pace.

If it takes her 1.4 minutes to run 5 miles, it will take her 1.4×5=7 minutes to run 4×2=8 miles at the same pace. Since 60 minutes is 1 hour, she is running at a speed of 8 miles per hour.

We found her pace in minutes per miles in part (a).

The maximum pay cut (B dollars) Emma is willing to accept at another job in Oberlin in order to stay in town is -y dollars.

a) To find the value of A, we need to compare Emma's utility before and after the transfer.
Before the transfer, Emma's utility function is U(x1, x2) = 2ln(x1) + 3ln(x2).
After the transfer, the price of the second product in Wellington is two times higher.

Let's denote the price of the second product in Oberlin as p, then the price of the second product in Wellington is 2p. The price of the first product remains the same in both cities.

To maintain the same level of utility, Emma needs to spend the same amount of money on each product in Wellington as she did in Oberlin.

Let's assume she spends x dollars on the first product and y dollars on the second product in Oberlin. Therefore, her total expenditure in Oberlin is \(p*x + p*y = p*(x + y).\)

In Wellington, she would need to spend the same amount on the first product (x dollars), but since the price of the second product is two times higher, she would need to spend 2p*y dollars on the second product. Therefore, her total expenditure in Wellington is p*x + 2p*y = p*(x + 2y).

Since she argues that she should receive a pay raise of A dollars to not be worse off, her total expenditure in Oberlin should be equal to her total expenditure in Wellington with the pay raise:

p*(x + y + A) = p*(x + 2y)
Simplifying the equation, we get:
x + y + A = x + 2y
Cancelling out the x terms:
y + A = 2y
Subtracting y from both sides:
A = y
Therefore, A = y dollars.

b) To find the value of B, we need to determine the maximum pay cut Emma is willing to accept at another job in Oberlin in order to stay in town.
Let's assume Emma's salary at her new job in Oberlin is y - B dollars. We want to find the maximum value of B.

Using the same logic as before, her total expenditure in Oberlin with the pay cut should be equal to her total expenditure in Wellington:
p*(x + y - B) = p*(x + 2y)

Simplifying the equation, we get:
x + y - B = x + 2y
Cancelling out the x terms:
y - B = 2y
Subtracting y from both sides:
-B = y
Therefore, B = -y dollars.

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To find the p-value for this test, we need to calculate the probability of observing at least 154 successful observations (assuming H0 is true) using the cumulative binomial distribution.

Given:

H0: p = 0.8

Ha: p > 0.8

Sample size (n) = 177

Number of successful observations = 154

We will use the binomial distribution to calculate the probability of observing at most 154 successful observations and subtract it from 1 to get the probability of observing at least 154 successful observations.

Using a statistical software or calculator, the p-value is found to be 0.0002 (rounded to four decimal places).

Since the p-value (0.0002) is less than the significance level (α = 0.005), we reject the null hypothesis (H0).

Therefore, the final conclusion is that there is sufficient evidence to warrant rejection of the claim that the population proportion is greater than 0.8.

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Answer:

(х + 1)(х - 2)

Step-by-step explanation:

х²-х-2=(х + 1)(х - 2)