Can someone show me step by step correctly for a better grade
There are approximately 7.48 liquid gallons in a cubic foot. If a cylindrical water tank holds 1,100 liquid gallons and has a radius of 3.2 feet, what is the approximate height of the water tank? Approximate using π = 3.14 and round to the nearest tenth.

4.6 feet

14.4 feet

46.0 feet

147.1 feet

The sample size, n is 9 and the sample mean, m is 41.33.

The exam has possible points and the scores for the students in the third classroom are as follows: 30 48 44 32 44 44 32 48 50.

We are asked to determine the sample size(n) and sample mean(m).

Sample size refers to the number of observations included in a study. In this question, the number of observations is equal to the number of scores in the third classroom. Hence, the sample size(n) is equal to n.

Now, the formula of the sample mean(m) is given as  

                m = Sum of all observations/Total Number of observations

          m =  30 + 48 + 44 + 32 + 44 + 44 + 32 + 48 + 50/9

          m = 372/9

          m = 41.33

Hence, the sample mean(m) of the scores for the students in the third classroom is 41.33.

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Answer:

b

Step-by-step explanation:

thats what i got

Answer:

j

Step-by-step explanation:

Answer:

K = (3,3)

After a reflection across the x axis (Vertical reflection), the coordinate becomes (3, -3)

Let me know if this helps!

Answer

(3, -3)

I'm pretty sure that's the answer, because reflecting the shape along the x-axis would mean having to reflect it horizontally. Once you do that, you'll find that the point K would meet its destination at (3, -3).

Answer:

20

Step-by-step explanation:

20 heads each head is one rabbit

Answer:

The answer is 20

Step-by-step explanation:

The answer is 20 because there are 80 paws they counted and every rabbit has 4 paws so divide 80 by 4 and you get 20 however they counted 20 heads but they already counted the paws so either way there was 20 hares and rabits

Answer: 3

Step-by-step explanation:

Answer:

No

Step-by-step explanation:

If you look at the graphs of the two expressions when x > 8

 you will see that 2^x is greater

Yes that's true

because

As we can observe the table

The values of 5x²

The values of 2^x

Clearly Tyler is correct

But

This is just according to table

After some while 2^x will shift gears to go ahead of 5x² side

Example

As per the BMI, the dependent variable is outcome

In this study, the researcher wants to compare the effectiveness of two different exercise programs in reducing BMI in individuals with diabetes. The participants will be randomly assigned to either the aerobic dancing group or the walking group, and their BMI will be measured before and after the six-month exercise program.

The changes in BMI between the two groups will be compared to determine which exercise program is more effective in reducing BMI in this population. The dependent variable in this study is the change in BMI, as it is the outcome that is being measured and compared between the two groups.

Overall, this study will provide valuable insights into the effectiveness of different exercise programs in reducing BMI in older adults with diabetes, which can have important implications for their overall health and wellbeing.

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Answer:601.85

Step-by-step explanation:

==========================================================

Explanation:

When you have a quadratic in the form ax^2 + bx + c = 0, where a,b,c are real numbers, then a negative discriminant leads to having a pair of complex roots. The roots come in conjugate pairs meaning that p+qi is one root while p-qi is the other root. The p,q are real numbers.

In the case of 4+7i being one root, we have p = 4 and q = 7, since it matches with p+qi. The other root must be 4-7i since it matches with p-qi.

In short, we flip the plus to a minus when going from 4+7i to 4-7i. All of this applies when we have a,b,c as real numbers.

If we allowed a,b,c to be complex numbers, then the roots may not necessarily come in conjugate pairs.

To calculate the total charge within the cylinder with dimensions r=1.5 and h=3, we use the potential function V = 5r + 4 cos Ø in cylindrical coordinates.

The total charge can be obtained by integrating the charge density over the volume of the cylinder.

The potential V within the cylinder is given by V = 5r + 4 cos Ø, where r represents the radial distance from the axis of the cylinder and Ø represents the angle in the cylindrical coordinate system. To calculate the total charge within the cylinder, we need to integrate the charge density over its volume.

The charge density ρ can be related to the potential by ρ = -∇²V, where ∇² is the Laplacian operator. In cylindrical coordinates, the Laplacian operator takes the form:

∇² = (1/r) ∂/∂r (r ∂/∂r) + (1/r²) ∂²/∂ز + ∂²/∂z²

Since the potential function V does not depend on the z coordinate, the Laplacian reduces to:

∇² = (1/r) ∂/∂r (r ∂/∂r) + (1/r²) ∂²/∂ز

Applying this operator to the potential function V, we find:

∇²V = (1/r) ∂/∂r (r ∂V/∂r) + (1/r²) ∂²V/∂ز

To find the charge density, we substitute this expression into ρ = -∇²V:

ρ = -(1/r) ∂/∂r (r ∂V/∂r) - (1/r²) ∂²V/∂ز

To calculate the total charge, we integrate the charge density ρ over the volume of the cylinder:

Q = ∫∫∫ ρ dV = ∫∫∫ -(1/r) ∂/∂r (r ∂V/∂r) - (1/r²) ∂²V/∂ز dV

The integration is performed over the cylindrical coordinates r, Ø, and z, with appropriate limits. Evaluating this integral will give us the total charge within the cylinder.

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The solutions are

i)  x = 2

ii) Therefore, there is no integer x that satisfies the congruence.

iii) x = 2

What is the equivalent expression?

Equivalent expressions are expressions that perform the same function despite their appearance. If two algebraic expressions are equivalent, they have the same value when we use the same variable value.

i. To solve 7 × 3 = 3 (mod 11), we need to find an integer x such that 7 × 3 is congruent to 3 modulo 11.

First, we can simplify 7 × 3 by calculating 73 = 343 and then taking the remainder when 343 is divided by 11. We get:

7 × 3 = 343 = 31 × 11 + 2

So, we have:

7 × 3 = 2 (mod 11)

To solve for x, we can try multiplying both sides by the modular inverse of 7 modulo 11.

The modular inverse of 7 modulo 11 is 8, because 7 x 8 is congruent to 1 modulo 11. So, we have:

8 × 7 × 3 = 8 × 2 (mod 11)

Simplifying:

56 × 3 = 16 (mod 11)

5 × 3 = 16 (mod 11)

We can check the values of x = 2 and x = 7 to see which one satisfies the congruence:

5 × 23 = 30 = 2 (mod 11)

5 × 73 = 365 = 9 (mod 11)

So the solution is x = 2.

ii. To solve 3.14 = 5 (mod 11), we need to find an integer x such that 3.14 is congruent to 5 modulo 11.

Since 3.14 is not an integer, we cannot directly apply modular arithmetic to it.

Instead, we can use the fact that 3.14 is equal to 3 + 0.14, and try to solve the congruence for each part separately.

First, we can find an integer k such that 3 + 11k is congruent to 5 modulo 11. This means:

3 + 11k = 5 + 11m for some integer m

Simplifying:

11k - 11m = 2

Dividing by 11:

k - m = 2/11

Since k and m are integers, the only possible value of k - m is 0. Therefore, we have:

k - m = 0

k = m

Substituting k = m, we get:

3 + 11k = 5 + 11k

This is not possible, since 3 is not congruent to 5 modulo 11. Therefore, there is no integer x that satisfies the congruence.

iii. To solve x8 = 10 (mod 11), we need to find an integer x such that x8 is congruent to 10 modulo 11.

We can try raising each integer from 0 to 10 to the power of 8, and check which one is congruent to 10 modulo 11:

0⁸ = 0 (mod 11)

1⁸ = 1 (mod 11)

2⁸ = 256 = 10 (mod 11)

3⁸ = 6561 = 10 (mod 11)

4⁸ = 65536 = 1 (mod 11)

5⁸ = 390625 = 10 (mod 11)

6⁸ = 1679616 = 1 (mod 11)

7⁸ = 5764801 = 5 (mod 11)

8⁸ = 16777216 = 1 (mod 11)

9⁸ = 43046721 = 10 (mod 11)

10⁸ = 10000000000 = 1 (mod 11)

Therefore, the solutions are x = 2,

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Answer:

The third answer choice

Step-by-step explanation:

The two parallel lines are BF and CG the perpendicular are AD and BF because the first sets are side by side and the second sets cross each other at a certain point.

The two lines intersect at the point (2, 2). To find the derivative of the function f(x) = x² + x, we can use the definition of the derivative. By taking the limit as h approaches 0 of the difference quotient (f(x + h) - f(x))/h, we can determine the instantaneous rate of change of f(x) at any point x. Evaluating this limit yields f'(x) = 2x + 1, which represents the derivative of f(x).

Now, let's graph the function f(x) = 3x + 2 and the line g(x) = 2x - 4. The graph of f(x) is a straight line with a slope of 3, passing through the point (0, 2). It rises steeply as x increases. On the other hand, the graph of g(x) is also a straight line but with a slope of 2 and passing through the point (0, -4). It has a less steep slope compared to f(x) but still rises as x increases. The two lines intersect at the point (2, 2).

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Hello! I'm happy to help!

Question 13: First, we will need to find the value of x. We know that AB and BC are equal.

So, we can subtract x from both sides.

2x-8

-x

x-8

So, we get AB as x-8

x+17

-x

17

and BC as 17. We know that these are equal, so we need to find which x value will make them that way. In this case, x=25 because 25-8=17. We can now add back the x we removed earlier.

17+25=42

Therefore, both AB and BC have a value of 42. and AC will be the combined total.

42+42=84

So, for question 13, x=25, AB=42, BC=42, and AC=84.

Question 14: This question is similar, but we have an expression for AB and AC, instead of AB and BC. We still know that AB=BC, so we can also say that BC=x+6 also. To find x, we need to find a second expression that is equal to AC. We can ad AB and BC together to get that. (x+6)+(x+6)=2x+12. This expression is equal to the AC expression, so we can compare them to find x.

2x+12=3x-31

We need to single out the x on one side, by changing things in the same way on both sides.

2x+12=3x-31

-2x       -2x

12=x-31

+31 +31

43=x

Now that we know our x value, we need to plug it in!

43+6=49

We now know that both AB and BC have a value of 49. Let's plug in the value for AC.

(43·3)-31

129-31

98

After plugging in the values, we know that AC is equal to 98. You could have also added AB and BC together, giving you 98 also.

To Summarize Question 14: x=43, AB=49, BC=49, AC=98.

Question 15: This one is very similar to the last, with a little more complexity to the expressions. First, let's simplify the expressions on AB and AC.

AB=3(3x-1)  AB=9x-3

AC=5(2x+2)   AC=10x+10

Now that we have the simplified expressions, let's solve. We need to find an equivalent expression for AC. We know that AB and BC are equivalent, and also add up to AC. We can copy the expression from AB to BC, and then add them

(9x-3)+(9x-3)=18x-6=AC

We now compare the two expressions in an equation to find x.

10x+10=18x-6

Again, we have to single out x on one side.

10x-10=18x-6

-10x     -10x

10=8x-6

+6     +6

16=8x

This time, we need to divide both sides to single out x.

\(\frac{16}{8}\)=\(\frac{8x}{8}\)

2=x

Now that we have x, we need to plug it in to finish solving.

(9·2)-3

18-3

15

AB=15  BC=15

From here, you can do one of two things, add AB and BC together (easy), or plug in x for AC.

15+15=30                            (10·2)+10

AC=30                                 20+10=30

                                            AC=30

To Summarize Question 15: x=2, AB=15, BC=15, AC=30.

I'm always happy to help, keep learning! :D

Answer:

XW = 80 feet

Step-by-step explanation:

To answer this question, we shall be needing a diagrammatic representation of the triangle.

Please check the attachment for this.

We are told to calculate the length XW and this refers to the hypotenuse of the triangle.

The other side that we have is the adjacent.

So yo calculate the length of XW, we need a trigonometric identity that links hypotenuse and adjacent together.

The trigonometric identity to use here is the cosine.

Mathematically;

Cos of an angle = length of the adjacent/length of the hypotenuse

Cos 60 = 40/XW

XW = 40/Cos 60

Cos 60 = 1/2 or 0.5

XW = 40/0.5 = 80 feet

The equation for the demand as a function of price is D(p) = 480 - 6p and revenue function can be written as R(p) = 480p - 6p^2.

a) The equation for the demand as a function of price can be determined based on the given information. We know that at a price of $80, the company attracts 300 customers, and for every $5 decrease in price, an additional 30 customers are attracted. Let's denote the price as p and the demand as D(p). The equation for the demand as a function of price can be written as:

D(p) = 300 + 30((80 - p)/5)

Simplifying this equation, we have:

D(p) = 300 + 6(80 - p)

D(p) = 480 - 6p

Therefore, the equation for the demand as a function of price is D(p) = 480 - 6p.

b) To express revenue as a function of price, we multiply the price per trip (p) by the number of customers (D(p)) at that price. Let's denote the revenue as R(p). The revenue function can be written as:

R(p) = p * D(p)

R(p) = p * (480 - 6p)

R(p) = 480p - 6p^2

To find the price that maximizes revenue, we can use derivatives. We differentiate the revenue function with respect to p and set it equal to zero: R'(p) = 480 - 12p = 0

Solving for p, we get:

12p = 480

p = 40

Therefore, the company should charge $40 per trip to maximize revenue.

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Given statement solution is :-A 10-year-old Child Dosage Calculation should receive approximately 167.82 mL of the drug.

Most drugs in children are dosed according to body weight (mg/kg) or body surface area (BSA) (mg/m2). Care must be taken to properly convert body weight from pounds to kilograms (1 kg= 2.2 lb) before calculating doses based on body weight. Doses are often expressed as mg/kg/day or mg/kg/dose, therefore orders written "mg/kg/d," which is confusing, require further clarification from the prescriber.

Chemotherapeutic drugs are commonly dosed according to body surface area, which requires an extra verification step (BSA calculation) prior to dosing. Medications are available in multiple concentrations, therefore orders written in "mL" rather than "mg" are not acceptable and require further clarification.

Dosing also varies by indication, therefore diagnostic information is helpful when calculating doses. The following examples are typically encountered when dosing medication in children.

To determine the dosage for a 10-year-old child using the given formula, we can substitute the values into the equation:

Child dosage = (age of child in years / (age of child + 12)) * adult dosage

For a 10-year-old child:

Child dosage = (10 / (10 + 12)) * 368 mL

Child dosage = (10 / 22) * 368 mL

Child dosage ≈ 0.4545 * 368 mL

Child dosage ≈ 167.82 mL (rounded to the nearest hundredth)

Therefore, a 10-year-old Child Dosage Calculation should receive approximately 167.82 mL of the drug.

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Answer:

$420

.8 x = 336

x = 336/.8

X=$420

Step-by-step explanation:

The diagonal of a room measuring 5 ft and 12 ft along the walls should be 14.6 ft.

The diagonal of the room can be calculated using the Pythagorean theorem, which states that the square of the hypotenuse (the longest side of the triangle) is equal to the sum of the squares of the other two sides. In this case, the hypotenuse would be the diagonal, the other two sides would be 5 ft and 12 ft.

Thus, the equation would be: a² + b² = c², with a = 5 ft, b = 12 ft, c = 14.6 ft.

The calculation for this equation is as follows:

5² + 12² = c²; 25 + 144 = c²; 169 = c²; √169 = c; c = 14.6 ft.

This means that the diagonal of a room measuring 5 ft and 12 ft along the walls is 14.6 ft.

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The events are not disjoint.The probability of getting an order from Restaurant A,

or an order that is accurate can be found by adding the probabilities of the two individual events: P(A or Accurate) = P(A) + P(Accurate) - P(A and Accurate).

From the table, we can see that the number of accurate orders at Restaurant A is 334, and the total number of orders at Restaurant A is 334 + 39 = 373. Therefore, P(A) = 373 / (373 + 260 + 241 + 149) = 373 / 1023.

The total number of accurate orders across all restaurants is 334 + 260 + 241 + 149 = 984. Therefore, P(Accurate) = 984 / (373 + 260 + 241 + 149) = 984 / 1023.

The number of orders that are both from Restaurant A and accurate is 334. Therefore, P(A and Accurate) = 334 / (373 + 260 + 241 + 149) = 334 / 1023.

Now we can calculate the probability of getting an order from Restaurant A or an order that is accurate:

P(A or Accurate) = P(A) + P(Accurate) - P(A and Accurate)

                 = 373 / 1023 + 984 / 1023 - 334 / 1023

                 = 1023 / 1023

                 = 1

Therefore, the probability of getting an order from Restaurant A or an order that is accurate is 1, which is equivalent to 100%.

Regarding the question of whether the events of selecting an order from Restaurant A and selecting an accurate order are disjoint events, the answer is no. Disjoint events are mutually exclusive events that cannot occur at the same time.

In this case, it is possible to select an accurate order from Restaurant A, so the events are not disjoint.

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An orthogonal basis of the plane containing vectors and in is: { , }.

To find an orthogonal basis of the plane containing vectors and in , we can use the Gram-Schmidt process.

First, we normalize the first vector :

Next, we find the projection of the second vector onto the first vector :

Then, we subtract the projection from the second vector to obtain a new vector that is orthogonal to the first vector :

Finally, we normalize the new vector :

Therefore, an orthogonal basis of the plane containing vectors and in is { , }.

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Answer:

the input number is -10

Step-by-step explanation:

output is always y

input is always x

so instead of y, put -52

-52=5x-2  add 2 to each side to ger 5x by itself

-50=5x     divide both sides by 5 to get x by itself

-10=x

x is the input so the input is -10

Given that a space is leased for $126,000 per year and 3,900 square feet leased area.

What will be the rent per square foot per year?

We can obtain the rent per square foot per year by using the following formula;`

Rent per square foot per year = Total rent per year / Total area leased`

Using the formula above, the rent per square foot per year can be calculated as follows;

`Rent per square foot per year = 126,000 / 3,900 = $32.31

`Therefore, the rent per square foot per year is $32.31.

let's do it in more detail:

To calculate the rent per square foot per year, you can divide the total annual rent by the total square footage.

Rent per square foot per year = Total annual rent / Total square footage

Given:

Total annual rent: $126,000

Total square footage: 3,900 square feet

Rent per square foot per year = $126,000 / 3,900 square feet

Using a calculator, we can compute:

Rent per square foot per year ≈ $32.31

Therefore, the rent per square foot per year would be approximately $32.31.

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Step-by-step explanation:

your answer would be 685 that's your answer

Answer:

dont mind me im just trying get points, since this question already got answered. :)

Step-by-step explanation:

Statistical significance refers to the likelihood that the association between two variables is not due to chance alone. In other words, it is a measure of the probability that the observed relationship between two variables is real and not just a result of random variation or sampling error.

When analyzing data, researchers often use statistical tests to determine whether there is a significant association between two variables. A p-value is calculated, which represents the probability that the observed relationship between the variables is due to chance. If the p-value is less than a predetermined threshold (usually 0.05), the results are considered statistically significant, and the researchers can conclude that there is a real association between the variables. It's important to note that statistical significance does not necessarily imply practical significance. Just because a relationship is statistically significant does not mean that it is important or meaningful in real-world terms. Additionally, statistical significance only tells us about the strength of the relationship between two variables, not about causation or directionality. Therefore, it is always important to interpret statistical significance in the broader context of the research question and study design.

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Answer:

thank uuuu

Step-by-step explanation:

Answer:

OMG FREE SLOT!

Step-by-step explanation:

HAZAAAAAAAAAAAAAAAA

Step-by-step explanation:

answer is 28 sq units ... height comes out to be 4 and base be 14 ..then area of triangle = 1/2 x base x height = 1/2 x 4 x 14 so area is 28 sq units

Answer:

5 km would be the answer

Step-by-step explanation:

For 45-45-90 triangles, the values are x, x, for the less long sides, then for the hypotenuse it's x sqrt2, because that is the rule for 45-45-90 triangles. So since in this problem, the value for the hypotenuse is 5sqrt2 km, the c value would be 5 km. Hope this helps!

The car travels 30 miles in 45 minutes with the speed 40 miles/hour with the constant speed.

Velocity is the rate and direction of an object's movement, whereas speed is the time rate at which an object is moving along a path. In other words, velocity is a vector, whereas speed is a scalar value. The distance traveled by a moving object in a specific amount of time is its speed. How quickly something is moving is determined by its speed. The distance traveled by an object in a given amount of time divided by the time gives the object's average speed.

Here,

45 minutes/60 minutes= .75 hours (this gives you the amount of time in hours)

time x speed = distance

.75 hours time x 40 mph speed = 30 miles distance

With a constant speed of 40 miles per hour, the car covers 30 miles in 45 minutes.

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Answer:

6x+8y = 3

Step-by-step explanation:

we have 3x + 4y = 7

4y = -3x + 7

y = -3/4 x + 7/4

so slope is -3/4

2 parallel lines always have same slope

so the slope of our new line is -3/4

so y = -3/4 x + C

for c,

we have (x,y) = (-2/3,7/8)

7/8 = -3/4 * -2/3 + C

C = 3/8

so equation is

y = -3/4 x + 3/8

simplyfyig,

8y = -6x + 3

or, 6x+8y = 3