At the local pet store, zebra fish cost $2.00 each and neon tetras cost $2.30 each. If Yumi bought 13 fish for a total cost of $27.50, not including tax, how many of each type of fish did she buy?​

in 1998, the university of Wisconsin collected data on means of transportation to work. in 2008, Betsy (a university of Minnesota student) used the data for her own project. betsy is using Secondary analysis collection method.

Secondary data is information gathered by someone other than the original user. It signifies that the data is already accessible and has been analyzed. Magazines, newspapers, books, and journals are examples of secondary data. It might be published or unpublished data.

Secondary analysis is the use of existing data acquired for the purposes of a previous study to pursue a research interest that is unique from the original work; this might be a new research topic or an alternate viewpoint on the original subject.

Secondary research methods commonly used include data acquisition via the internet, libraries, archives, schools, and organizational reports.

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Answer: linear combo of terms involving x & y, with respective numbers determining their contribution to the expression

To determine if the linear system corresponding to an augmented matrix [a1 a2 a3 b] has a solution, we can check whether the vector b is in the span of the vectors {a1, a2, a3}.

In linear algebra, the augmented matrix represents a system of linear equations. The columns a1, a2, and a3 correspond to the coefficients of the variables in the system, while the column b represents the constants on the right-hand side of the equations. To check if the system has a solution, we need to determine if the vector b is a linear combination of the vectors a1, a2, and a3.

If the vector b lies in the span of the vectors {a1, a2, a3}, it means that b can be expressed as a linear combination of a1, a2, and a3. In other words, there exist scalars (coefficients) that can be multiplied with a1, a2, and a3 to obtain the vector b. This indicates that there is a solution to the linear system.

On the other hand, if b is not in the span of {a1, a2, a3}, it implies that there is no linear combination of a1, a2, and a3 that can yield the vector b. In this case, the linear system does not have a solution.

Therefore, determining whether the vector b is in the span of {a1, a2, a3} allows us to determine if the linear system corresponding to the augmented matrix [a1 a2 a3 b] has a solution or not.

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To determine whether there is enough evidence to reject the null hypothesis, we need to compare the computed test statistic to the critical value.

In this case, the computed test statistic is 2.50 and the critical value is 2.33. If the computed test statistic falls in the rejection region beyond the critical value, we can reject the null hypothesis. Conversely, if the computed test statistic falls within the non-rejection region, we fail to reject the null hypothesis.In this scenario, since the computed test statistic (2.50) is greater than the critical value (2.33), it falls in the rejection region. This means that the observed data is unlikely to occur if the null hypothesis were true.

Therefore, based on the given information, there is enough evidence for the emergency room nurse to reject the null hypothesis. This suggests that there is sufficient evidence to support the claim that the average number of cases of upper respiratory infections per day at the hospital is over 21 cases.

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There is enough evidence to reject the null hypothesis in this case because the computed test statistic (2.50) is higher than the critical value (2.33). This suggests the average number of daily respiratory infections exceeds 21, providing substantial evidence against the null hypothesis.

Yes, there is enough evidence for the emergency room nurse to reject the null hypothesis. The null hypothesis is typically a claim of no difference or no effect. In this case, the null hypothesis would be an average of 21 upper respiratory infections per day. The test statistic computed (2.50) exceeds the critical value (2.33). This suggests that the average daily cases indeed exceed 21, hence providing enough evidence to reject the null hypothesis.

It's crucial to understand that when the test statistic is larger than the critical value, we reject the null hypothesis because the observed sample is inconsistent with the null hypothesis. The statistical test indicated a significant difference, upheld by the test statistic value of 2.50. The significance level (alpha) of 0.05 is a commonly used threshold for significance in scientific studies. In this context, the finding suggests that the increase in respiratory infection cases is statistically significant, and the null hypothesis can be rejected.

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Answer:

B

Step-by-step explanation:

The required GCF is 8.

The greatest common factor is that greatest number from the factors which divides the number completely.

For example take numbers 12 and 16.

The factors of 12 are 2×2×3.

And the factors of 16 are 2×2×2×2.

We can clearly see that the common factors are 2×2 which gives 4. So, 4 is the greatest common factor which divides both 12 and 16.

Here it is given to find the greatest common factor of 16 and 40.

Factors of 16 = 2×2×2×2

Factors of 40 = 2×2×2×5

We can see clearly the common factors are 2×2×2 which gives 8.

So, 8 is the greatest common factor.

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The coordinates of equation y is (0, 3), (1, 4) and (3,5).

The graph is attached below.

The graph's x-axis (horizontal line) should contain the independent variable, and the y-axis should contain the dependent variable (vertical line). At the origin, where the coordinates are, the x and y axes intersect (0,0).

Given:

y= x+ 3.

Now, put x= 0

y= 0+3

y=3

and, x= 1

y= 1+3

y= 4

and, x= 2

y= 2+ 3

y= 5

Thus, the coordinates of equation y is (0, 3), (1, 4) and (3,5).

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The Questions attached here is seems to incomplete, the options for the graph is attached below.

Answer:h

Step-by-step explanation:

Answer:21

Step-by-step explanation:

you draw a line so there a grid measured 5 by 3 and a grid measured 2 by 3.

The median of all these numbers in dollars is 7.5.

When the no. of given data are odd we arrange those nos. in an order increasing or decreasing order and the middle no. is the median of the given odd numbers.

According to the given question the following values represent the amount of money (in dollars) 10 people have in their wallets: 10, 12, 19, 5, 6, 8, 1, 13, 4, 7 and we have to find the median.

First we observe that no. of people is even so there will be two middle nos.

Now lets arrange these nos. in an order from least to greatest which is

1, 4, 5, 6, 7, 8, 10, 12, 13, 19 in this 7 and 8 are middle numbers.

So, to find the median of all these nos. we will divide these two middle nos. by 2.

∴  ( 7 + 8 )/2

= 15/2

= 7.5.

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Answer:

D. 51.1

Step-by-step explanation:

#platofam

Answer:

D. 51.1

Step-by-step explanation:

plato

The probability that a sample of 10 parts contains 4 defective ones, given that 20% of the computer parts produced are defective, is approximately 0.21.

To calculate the probability, we can use the binomial probability formula. Let's denote the probability of a part being defective as p = 0.2 and the number of trials as n = 10.

The formula for calculating the probability of getting exactly k successes in n trials is:

P(X = k) = C(n, k) * p^k * (1 - p)^(n - k)

where C(n, k) represents the number of combinations of n items taken k at a time.

Plugging in the values for our case, we have:

P(X = 4) = C(10, 4) * 0.2^4 * (1 - 0.2)^(10 - 4)

Calculating the values:

C(10, 4) = 10! / (4! * (10 - 4)!) = 210

0.2^4 ≈ 0.0016

(1 - 0.2)^(10 - 4) ≈ 0.1074

P(X = 4) = 210 * 0.0016 * 0.1074 ≈ 0.0340

Rounding to two decimal places, the probability is approximately 0.03.

The probability that a sample of 10 computer parts contains 4 defective ones, given that 20% of the parts produced are defective, is approximately 0.03 or 3.40% when rounded to two decimal places.

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A representative sample based on the hospital scenario is option A

A subset of a larger population that accurately reflects the traits, diversity, and distribution of the total population is referred to as a representative sample.

Due to time, financial, or logistical limitations, it is frequently not possible or practical to investigate an entire population when conducting research or gathering data. In these situations, researchers choose a representative sample from which to deduce generalizations about the total population.

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Every animal in the world needs these things to survive:

A living organism can be defined as an organism which possesses an organized structure, cells, and equally show the characteristics of life.

Basically, some of the characteristics of a living organism include the following:

In this context, we can reasonably and logically deduce that all living organisms in the world such as animals, human beings, etc., all require food, water and oxygen in order to survive.

On the other hand (conversely), living organisms such as plants only require water, carbon dioxide, and sunlight in order to survive.

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The identities among the given options are:

B. (sin x + cos x)² = 1 + sin 2x

C. sin 6x = 2 sin 3x cos 3x

Therefore, options B and C are the identities.

Among the given options, the identities are as follows:

B. (sin x + cos x)² = 1 + sin 2x

C. sin 6x = 2 sin 3x cos 3x

Let's examine each option:

A. This equation is not an identity since it does not hold true for all values of x.

B. This equation is an identity.

It is known as the Pythagorean Identity, which states that the square of the sum of sine and cosine is equal to 1 plus the sine of twice the angle.

C. This equation is also an identity. It is derived from the double angle formula for sine, which states that sin(2x) = 2sin(x)cos(x).

By substituting 3x for x, we get sin(6x) = 2sin(3x)cos(3x), which is the given equation.

D. The equation given here, "4 cos x sec x = tan x," is not an identity since it does not hold true for all values of x.

To summarize, the identities among the given options are B. (sin x + cos x)² = 1 + sin 2x and C. sin 6x = 2 sin 3x cos 3x.

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Answer:

r = 8

Step-by-step explanation:

To find the radius with only the area you do r = \(\sqrt{A/\pi }\)

Since your area 64\(\pi\) = 201.0619298 then 201.0619298/\(\pi\) = 64

\(\sqrt{64}\) = 8

Hope this helps!!

To calculate the cash balance at the end of the period, we need to consider the cash inflows and outflows.

Starting cash balance: $4,520

Cash inflows: $1,654 (receivables collected)

Cash outflows: $1,961 (payments to suppliers) + $500 (cash expenses)

Total cash inflows: $1,654

Total cash outflows: $1,961 + $500 = $2,461

To calculate the cash balance at the end of the period, we subtract the total cash outflows from the starting cash balance and add the total cash inflows:

Cash balance at the end of the period = Starting cash balance + Total cash inflows - Total cash outflows

Cash balance at the end of the period = $4,520 + $1,654 - $2,461

Cash balance at the end of the period = $4,520 - $807

Cash balance at the end of the period = $3,713

Therefore, the cash balance at the end of the period is $3,713.

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Answer: Approximately 52.87 cm.

Step-by-step explanation:

Circumference is diameter times pie to divide the circumference  by pie.

166/3.14    use 3.14 as an approximation for pie.

166/3.14 = 52.87  rounded to the nearest hundredth

The answer should be 52.8662420382cm you can round however needed

diamete = circumferance divided by pi

Answer:

y=-\(\sqrt9(x-1)+2\)

The explicit formula for the sequence is aₙ=(-4).(-4)ⁿ⁻¹ and the 8th term is 65536

The given sequence is -4, 16, -64, 256,...

If we observe the sequence it is a geometric sequence

aₙ=a.rⁿ⁻¹

a is the first term and r is the common ratio

From the sequence the first term is -4 and common ratio is -4

aₙ=(-4).(-4)ⁿ⁻¹

Plug in the value n as 8

a₈=(-4).(-4)⁷

The value of minus four power seven is minus sixteen thousand three hundred eighty four

a₈=(-4)(-16384)

When four is multiplied with sixteen thousand three hundred eighty four we get sixty five thousand five hundred thirty six

a₈= 65536

Hence, the explicit formula for the sequence is aₙ=(-4).(-4)ⁿ⁻¹ and the 8th term is 65536

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The height of the flagpole when marci who is 5 feet tall is standing in lines of sight to the top and bottom of the pole is 20 feet.

To estimate the height of the flagpole, we can use trigonometry.

Let's call the height of the flagpole "h" and the distance from Marci to the base of the pole "d".

We can set up a right triangle with the flagpole as the hypotenuse, Marci's height as one leg, and the distance from Marci to the base of the pole as the other leg.

Using the tangent function, we can say:

tan(θ) = perpendicular/base

In this case, the opposite is Marci's height (5 feet) and the adjacent is the distance from Marci to the base of the pole (d).

We don't know the angle yet, but we can use the fact that the angle formed by Marci's lines of sight to the top and bottom of the pole is the same as the angle formed by the top of the pole, Marci's eye, and the base of the pole (since these are alternate interior angles).

Let's call this angle "x".
So, we have:
tan(x) = 5/d
To find the height of the pole, we need to use another trig function. Since we know the adjacent and the hypotenuse, we can use the cosine function:
cos(x) = base/hypotenuse

In this case, the adjacent is still d and the hypotenuse is h + 5 (since Marci's height is included in the overall height of the flagpole).

So we have:

cos(x) = d/(h + 5)

We can rearrange this equation to solve for h:

h = (d/cos(x)) - 5

Now we just need to find the value of x.

We know that the tangent of x is 5/d, so we can use the inverse tangent function (tan^-1) to find x:

x = tan^-1(5/d)

Plugging this into the equation for h, we get:

h = (d/cos(tan^-1(5/d))) - 5

We can simplify this a bit by using the identity:

cos(tan^-1(x)) = 1/√(1 + x^2)

So we have:

h = (d * √(1 + (5/d)²)) - 5

Now we just need to plug in the values given in the problem. Let's say that Marci stands 20 feet away from the base of the pole. Then we have:

h = (20 * √(1 + (5/20)²)) - 5

h = 19 feet (rounded to the nearest foot)

So the answer is (b) 20 feet.

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$98×6/100

sales tax =$5.88

$98+$5.88

total cost =$103.88

Answer:

yes

Step-by-step explanation:

you can either call it the narrator or the speaker.

~Ren

Answer:

$629.75

Step-by-step explanation:

got it right

Answer:

b. 629.75

Step-by-step explanation:

correct on edge 2022

Answer:

Its A

Step-by-step explanation: I took the test

Answer:

A

Step-by-step explanation:

Answer: $576.99 in 3 years

Step-by-step explanation:

Answer:

546.36

Step-by-step explanation:

Interest rate calculator

Using it's concept, the domain of the function is given as follows:

{x| –2 ≤ x <= 5}

The domain of a function is the set that contains all possible input values for the function, that is, the values for which the function is defined.

The function described in this problem is defined from x = -2 until x = 5 hence the domain of the function is given as follows, by the interval:

{x| –2 ≤ x <= 5}

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Answer:

So I got 64 on my test, but it doesn't let you see what was right and what was wrong, so I guess we will never know☹️☹️☹️☹️.

BTW in was on edge

Pentru a răspunde la întrebarea ta, să presupunem că cele două numere sunt reprezentate de x și y. Conform informațiilor oferite, suma celor două numere este de 3 ori mai mare decât diferența lor. Astfel, putem formula următoarea ecuație

x + y = 3 * (x - y)

Pentru a afla de câte ori este mai mare suma decât cel mai mic număr, putem utiliza următoarea ecuație:

(x + y) / min(x, y)

De exemplu, dacă x este mai mic decât y, putem înlocui min(x, y) cu x în ecuație.

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Pentru a răspunde la întrebarea ta, să presupunem că cele două numere sunt reprezentate de min(x, y) Conform informațiilor oferite, suma celor două numere este de 3 ori mai mare decât diferența lor. Astfel, putem formula următoarea ecuație

x + y = 3 * (x - y)

Pentru a afla de câte ori este mai mare suma decât cel mai mic număr, putem utiliza următoarea ecuație:

(x + y) / min(x, y)

De exemplu, dacă x este mai mic decât y, putem înlocui min(x, y) cu x în ecuație.

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Answer:

They'll need to see 12 movies together before they pay the same amount.

Let the number of movies be x

Based on the question given, the equation for Jaycie will be:

= 27 + (6 × x)

= 27 + 6x

The equation for Clarie will be:

= 8.25 × x

= 8.25x

Then, the equation to solve the question will be:

27 + 6x = 8.25x

Collect like terms

27 = 8.25x - 6x

2.25x = 27

x = 27/2.25

x = 12

They will see 12 movies together.