The bottom of a box is a rectangle with length 5 cm more than the width. The height of the box


is 4 cm and its volume is 264 cm3
. Find the dimensions of the bottom of the box

The determinant of the Hessian matrix is positive (80), and the second partial derivative with respect to x is positive, so the critical point is a minimum. Therefore, the minimum value of q is 285.

To minimize q=5x^2+4y^2 subject to the constraint x+y=9, we can use the method of Lagrange multipliers.

Let L = 5x^2 + 4y^2 - λ(x+y-9), where λ is the Lagrange multiplier.

Taking the partial derivatives of L with respect to x, y, and λ and setting them equal to zero, we get:

∂L/∂x = 10x - λ = 0

∂L/∂y = 8y - λ = 0

∂L/∂λ = x + y - 9 = 0

Solving these equations simultaneously, we get:

x = 18/7, y = 63/7, λ = 180/49

We can verify that this critical point is a minimum by checking the second partial derivatives of L. The second partial derivatives are:

∂^2L/∂x^2 = 10, ∂^2L/∂y^2 = 8, ∂^2L/∂x∂y = 0

The determinant of the Hessian matrix is positive (80), and the second partial derivative with respect to x is positive, so the critical point is a minimum.

Therefore, the minimum value of q is:

q = 5(18/7)^2 + 4(63/7)^2 = 1995/7 ≈ 285.

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Since our test statistic of 4.5 is greater than the critical value of 2.700, we reject the null hypothesis. Therefore, we say there is enough evidence to reject the manufacturer's claim.

A good way to test if a sample with Variance of 4.3 is worth rejecting by manufacturer, we can use a Chi-Square test with (n-1) degrees of freedom. Where n is the sample size.

null hypothesis: the variance of the population is equal to 8.6

alternative hypothesis: the variance of the population is less than 8.6.

The test statistic is given by:

Chi-Square = (n - 1) * sample variance / population variance

From the problem statement, we have

n = 10

sample variance = 4.3

population variance = 8.6

Substituting these values, we get:

chi-square = (10 - 1) * 4.3 / 8.6 = 4.5

The critical value for a chi-square distribution with 9 degrees of freedom at a significance level of 0.01 is 2.700.

Since our test statistic of 4.5 is greater than the critical value of 2.700, we reject the null hypothesis.

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The given position equation x=5+3t represents a particle moving in the positive direction of the x-axis, which is east. The coefficient of t is positive, indicating that the position of the particle increases with time.

Hence, the particle moves away from the origin in the eastward direction.

Therefore, the false statement about the particle is that it moves in the negative direction (west) of the x-axis. It is essential to understand the direction of motion of a particle in a one-dimensional motion problem, as it helps us to determine the sign of the velocity and acceleration, which are crucial in analyzing the motion of the particle.

In this case, the velocity is constant and positive, and the acceleration is zero, indicating that the particle moves at a constant speed in a straight line.

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Therefore, the simplified and factored expression for f(x) - g(x) is x^3(4x^2 - 27x - 15).

To find the expression for f(x) - g(x), we subtract the terms of g(x) from f(x) term by term.

f(x) = 5x^5 - 13x^4 + x^3

g(x) = 14x^4 - x^5 + 16x^3

Subtracting term by term:

f(x) - g(x) = (5x^5 - 13x^4 + x^3) - (14x^4 - x^5 + 16x^3)

Rearranging the terms:

f(x) - g(x) = 5x^5 - 13x^4 + x^3 - 14x^4 + x^5 - 16x^3

Combining like terms:

f(x) - g(x) = (5x^5 - x^5) + (-13x^4 - 14x^4) + (x^3 - 16x^3)

Simplifying:

f(x) - g(x) = 4x^5 - 27x^4 - 15x^3

So, the expression for f(x) - g(x) in factored form is:

f(x) - g(x) = x^3(4x^2 - 27x - 15)

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Thus, The P-value is 0.0386. Reject the null hypothesis that there is no difference in the GPAs.

Based on the given information, the university is comparing the grade point averages of theater majors with the grade point averages of history majors.

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In the scale drawing of the solar system, the scale used to represent Uranus with a diameter of 31,250 miles as 125 centimeters is 1 centimeter representing 250 miles.

To determine the scale used in the model, we can establish a ratio between the actual diameter of Uranus and its representation in the scale drawing.

The actual diameter of Uranus is 31,250 miles, while its representation in the scale drawing is 125 centimeters. Let's assume the scale is represented as 1 centimeter representing "x" miles. We can set up a proportion:

1 centimeter / x miles = 125 centimeters / 31,250 miles

Cross-multiplying gives us:

1 * 31,250 = 125 * x

31,250 = 125x

Dividing both sides by 125, we find:

x = 31,250 / 125

x = 250

Therefore, the scale used in the model is 1 centimeter representing 250 miles. This means that each centimeter in the scale drawing corresponds to 250 miles in reality. In other words, the diameter of Uranus is scaled down by a factor of 250. So, if we measure 1 centimeter in the model, it would represent a distance of 250 miles in the actual solar system.

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The identity for this trigonometric equation is verified, since the left-hand side and right-hand side are equal.

To verify this identity, we will start by expanding the left-hand side of the equation:

(sin(x) + cos(x))2 = sin2(x) + 2sin(x)cos(x) + cos2(x)

Next, we will simplify the right-hand side of the equation:

sin2(x) − cos2(x) = (sin(x) + cos(x))(sin(x) − cos(x))

Now we can substitute this expression into the original equation:

(sin(x) + cos(x))2 = (sin(x) + cos(x))(sin(x) − cos(x))

To finish, we will cancel out the common factor of (sin(x) + cos(x)) on both sides of the equation:

sin(x) + cos(x) = sin(x) − cos(x)

And after simplifying:

2cos(x) = 0

Therefore, the identity is verified, since the left-hand side and right-hand side are equal.

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The best statement describe about Scatterplot is :There is a positive, moderately strong relationship between X and Y with no outliers.

So, the correct answer is C.

This statement best describes the scatterplot because it indicates a correlation between the variables X and Y, suggesting that as one increases, so does the other.

The relationship is moderately strong, meaning the points are not perfectly aligned but still show a clear pattern. Additionally, there are no outliers, implying that all data points are consistent with the observed trend.

Hence the answer of the question is C

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Answer:

B, E

Step-by-step explanation:

10/40 = 1/4

A. 1/2 no

B. 5/20 = 1/4 yes

C. 5/10 = 1/2 no

D. 2/5 no

E. 1/4 yes

F 10/20 = 1/2 no

Answer: E-1/4

Step-by-step explanation:

Simplify; 10/40 = 1/4

10 goes into 40 exactly four times, so 10/40 is simplified to 1/4.

Or, just take of the zeros.

The area of the sector bounded by the arc GJ is 25.97 square feet

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

Diameter  = 23 feet

Also, we have

Central angle bounded by arc GJ = 1/16 * 360

So, we have

Central angle bounded by arc GJ = 22.5

The area of the sector bounded by the arc GJ is then calculated as

Area = Central angle/360 * πr²

This gives

Area = 22.5/360 * π * (23/2)²

Evaluate

Area = 25.97

Hence, the area of the sector bounded by the arc GJ is 25.97 square feet

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The solution is;6 + 8x − 3y = 11.

Given equation is 8x − 3y = 5To find the value of 6 + 8x − 3y, we need to simplify the expression as follows;6 + 8x − 3y = (8x − 3y) + 6 = 5 + 6 = 11Since the equation is true, the value of 6 + 8x − 3y is 11. Therefore, the solution is;6 + 8x − 3y = 11.

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The product in standard form that is the area as sum of the generic rectangle is given by 6x² - 5x - 4.

Given the expression is:

(3x - 4)(2x + 1)

Multiplying the algebraic terms we get,

(3x - 4)(2x + 1)

= (3x)*(2x) - 4*(2x) + 1*(3x) - 4*1

= 6x² - 8x + 3x - 4

= 6x² + (3 - 8)x - 4

= 6x² + (-5)x - 4

= 6x² - 5x - 4

Hence the product of the algebraic expressions that is the area as sum of the generic rectangle is given by 6x² - 5x - 4.

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The following propositions can be written: a) p → r (If you are liked by your friends, you will get a present). b) ¬p ↔ (¬q ∨ ¬r) (You do not get a present for your birthday if and only if either you do not remind your friends about your birthday or your friends do not like you).

a) To represent the proposition "If you are liked by your friends, you will get a present," we can use the conditional operator →. So, the proposition can be written as p → r, where p represents "You get a present for your birthday" and r represents "You are liked by your friends." This statement implies that if p is true (you get a present), then r must also be true (you are liked by your friends).

b) The proposition "You do not get a present for your birthday if and only if either you do not remind your friends about your birthday or your friends do not like you (or both)" involves the use of the biconditional operator ↔. Let's break it down:

¬p represents "You do not get a present for your birthday."

¬q represents "You do not remind your friends about your birthday."

¬r represents "Your friends do not like you."

Combining these propositions, we can write the statement as ¬p ↔ (¬q ∨ ¬r), which means that ¬p is true if and only if either ¬q or ¬r (or both) is true. This statement implies that if you do not get a present, it is because either you did not remind your friends about your birthday or your friends do not like you (or both).

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The series converges on the interval from 7 inclusive to 9 exclusive.

To find the radius of convergence, we use the ratio test:

So the series converges absolutely if |x - 8| < 1, and diverges if |x - 8| > 1. Therefore, the radius of convergence is R = 1.

To find the interval of convergence, we need to test the endpoints x = 7 and x = 9:

When x = 7, the series becomes:

[infinity] (-1)ⁿ (n+9) / (n+1)

n = 0

which is an alternating series that satisfies the conditions of the alternating series test. Therefore, it converges.

When x = 9, the series becomes:

[infinity] 1 / (n+1)

n = 0

which is a p-series with p = 1, which diverges.

Therefore, the interval of convergence is [7, 9).

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The maximum velocity of the car is 0 m/s and the time t' when it stops is t' = -10/a when subjected to acceleration.

Given that the jet car is originally traveling at a velocity of 10 m/s and is subjected to acceleration, we need to determine the car's maximum velocity and the time t' when it stops.

We can use the equation of motion:
v = u + at

Where:
v = final velocity
u = initial velocity
a = acceleration
t = time

Let's assume that the car comes to a stop at time t' and the final velocity is 0 m/s.
0 = 10 + at'
t' = -10/a

Now, to determine the maximum velocity, we can use another equation of motion:
[tex]v^2 = u^2 + 2as[/tex]

Where:
s = distance

As the car stops, the distance traveled before coming to a stop will be:
[tex]s = ut' + (1/2)at'^2[/tex]

Substituting the value of t' in the above equation, we get:
[tex]s = 10(-10/a) + (1/2)a(-10/a)^2[/tex]
s = -50/a

Now, substituting the values of s, u, and a in the equation of motion, we get:
[tex]v^2 = 10^2 + 2a(-50/a)[/tex]
[tex]v^2 = 100 - 100\\v^2 = 0[/tex]

v = 0 m/s

Hence, the maximum velocity of the car is 0 m/s and the time t' when it stops is t' = -10/a.

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a. It is also sometimes referred to as the response variable, outcome variable, or predicted variable. b.  linear regression analysis with only one independent variable, that variable is called the "regressor" or "regressor variable".

a. The dependent variable in a regression analysis is the variable that is being predicted or explained by the independent variable(s). It is also sometimes referred to as the response variable, outcome variable, or predicted variable.

b. The independent variable in a regression analysis is the variable that is being used to explain or predict the values of the dependent variable. It is also sometimes referred to as the predictor variable, explanatory variable, or input variable. In a simple linear regression analysis with only one independent variable, that variable is called the "regressor" or "regressor variable".

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The set of points at which the function is continuous h(x, y) = (eˣ eʸ)/ (eˣʸ - 1) when xy is not zero,or x or y is not zero.

To determine the set of points at which the function h(x, y) = (eˣ eʸ)/ (eˣʸ - 1) is continuous,

we need to look at the denominator of the expression, eˣʸ - 1. This denominator is equal to zero only when eˣʸ = 1, which means that xy = 0.

Therefore, the set of points where the function h(x, y) is not continuous is when xy = 0, or when x = 0 or y = 0.

At these points, the denominator of the expression becomes zero, and the function is not defined.

Thus, the set of points where the function h(x, y) is continuous is when xy ≠ 0, or when x ≠ 0 and y ≠ 0.

At these points, the denominator of the expression is never zero, and the function is well-defined and continuous.

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The probability that the resulting integer is a palindrome is 1/5, or 0.2 expressed as a decimal.

The five-digit number must take the form of XY2YX in order for the given digits (1,1,1,1,2,2) to create a palindrome.

There are two instances to think about:
1) X=1 and Y=1:

In this case, the integer will be 21112.
2) X=1 and Y=2:

In this case, the integer will be 12121.
There are a total of 5! (5 factorial) ways to arrange the digits (1,1,1,2,2).

To calculate the total number of ways to arrange the digits 1, 1, 1, 2, and 2, we can use the formula for permutations with repetition:

n! / (r1! * r2! * ... * rk!)
Total arrangements = 5! / (3! * 2!) = 120 / (6 * 2) = 10
Only 2 of these 10 potential combinations result in palindromes.

There are precisely 2 options for B (specifically, 0 and 5) that make the number ABB divisible by 5 out of the total of 10 options for A and 10 options for B.

As a result, there are two possibilities for the digits ABB to divide the total number by 5.

This means that there are a total of 50 six-digit palindromes of the type 5ABBA5 that are divisible by 55.

As a result, the likelihood of a palindrome is:
Probability = (Number of palindromes) / (Total arrangements)

P(palindrome) = 2 / 10

P(palindrome) = 1/5

There are only two palindromes that can be formed using the digits 1, 1, 1, 2, and 2. They are 12121 and 21112.

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The equation of the elastic curve for portion ab of the beam is y = w/24 * e^(-x/4 * l) * (4l^2 - x^2)

The elastic curve equation for a simply supported beam with a uniformly distributed load is y = (w/(24 * EI)) * (x^2) * (3l - x), where w is the load per unit length, E is the modulus of elasticity, I is the moment of inertia, x is the distance from the left end of the beam, and l is the length of the beam.

In this case, we are given a load w, and a beam of length l. The elastic curve equation is given as y = w/24 * e^(-x/4 * l) * (4l^2 - x^2), which is a variation of the standard equation. The e^(-x/4 * l) term represents the deflection due to the load, while the (4l^2 - x^2) term represents the curvature of the beam.

To derive this equation, we first find the deflection due to the load by integrating the load equation over the length of the beam. This gives us the expression for deflection as a function of x.

We then use the moment-curvature relationship to find the curvature of the beam as a function of x. Finally, we combine these two expressions to get the elastic curve equation for the beam.

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The degree of the polynomial7m¹⁶n¹¹ is 27.

A polynomial is an algebraic expression consisting of variables and coefficients.

The degree of a polynomial is the highest degree of any of its terms.

In the given expression, the term is 7m¹⁶n¹¹;

This term consists of two variables, m and n, raised to exponents 16 and 11 respectively. The coefficient of this term is 7.

The degree of a term in a polynomial is the sum of the exponents of the variables in that term.

degree = exponent of m + exponent of n

= 16 + 11

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The answer is , (x - 2)² + (y - 3)² = 9 , this is the equation of the circle with center (2,3) and passes through the point (5,3).

To write the equation of a circle in standard form with its center at (h, k), and a radius of r, the  formula is :

(x-h)²+(y-k)²=r²

Where h and k are the x and y coordinates of the center of the circle, respectively, and r is the radius.

We can use this formula to solve the given problem since we know the center of the circle and a point that lies on it.

Let the center of the circle be (h,k) = (2,3) and the point on the circle be (x,y)=(5,3).

We also know that the radius is equal to the distance between the center of the circle and the point on the circle, using the distance formula:

radius = √[(x - h)² + (y - k)²]

radius = √[(5 - 2)² + (3 - 3)²]

radius = √[3² + 0²]

radius = √9

radius = 3

Now that we know the center and radius of the circle, we can use the formula for the equation of the circle in standard form.

(x - 2)² + (y - 3)² = 9 , this is the equation of the circle with center (2,3) and passes through the point (5,3).

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To determine whether the exponential function represents growth or decay, we need to examine the base of the exponent, which is 0.909 in this case.

If the base is greater than 1, it represents growth. If the base is between 0 and 1, it represents decay.

In this case, the base is 0.909, which is less than 1. Therefore, the exponential function represents decay.

To determine the percentage rate of decrease, we can calculate the percentage decrease per unit change in x. In this case, the base of the exponent represents the rate of decrease.

The percentage rate of decrease can be found by subtracting the base from 1 and multiplying by 100.

Percentage rate of decrease = (1 - 0.909) * 100 = 0.091 * 100 = 9.1%

Therefore, the exponential function represents decay with a percentage rate of decrease of 9.1%.

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To prove that if R is a well-order on A, then R is a total order which has the least upper bound, and the greatest lower bound properties, we need to show the following:

R is a total order: For R to be a total order, it must satisfy three conditions: reflexivity, antisymmetry, and transitivity. Since R is a well-order on A, it already satisfies these conditions.

R has the least upper bound property: To prove that R has the least upper bound property, we need to show that for any non-empty subset S of A, there exists a least upper bound (supremum) of S in R.

Suppose S is a non-empty subset of A. Since R is a well-order on A, every non-empty subset of A has the least element.

Let x be the least element of S. Then, for any element y in S, we have x <= y.

Therefore, x is an upper bound of S. Moreover, x is the least upper bound of S in R, because if there were another upper bound z in R, we would have

x <= z and z <= x (by reflexivity and transitivity), which implies x = z.

R has the greatest lower bound property: To prove that R has the greatest lower bound property, we need to show that for any non-empty subset S of A, there exists a greatest lower bound (infimum) of S in R.

Suppose S is a non-empty subset of A. Since R is a well-order on A, every non-empty subset of A has the least element.

Let x be the greatest element of the set A\ S (complement of S in A). Then, for any element y in S, we have y <= x.

Therefore, x is a lower bound of S. Moreover, x is the greatest lower bound of S in R, because if there were another lower bound z in R, we would have z <= x and x <= z (by reflexivity and transitivity), which implies x = z.

Therefore, R is a total order which has the least upper bound, and the greatest lower bound properties if R is a well-order on A.

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If R is a well order on A, then it means that every non-empty subset of A has a least element under R. This implies that R is a total order, as for any two elements a, b in A, either aRb or bRa holds, and either a ≤ b or b ≤ a holds.

Now, for any non-empty subset S of A that has an upper bound, let B be the set of all upper bounds of S under R. Since B is a non-empty subset of A, it has a least element, which we call the least upper bound of S under R. This shows that R has the least upper bound property.

Similarly, for any non-empty subset S of A that has a lower bound, let B be the set of all lower bounds of S under R. Since B is a non-empty subset of A, it has a greatest element, which we call the greatest lower bound of S under R. This shows that R has the greatest lower bound property.

Therefore, we have shown that if R is a well order on A, then R is a total order which has the least upper bound, and the greatest lower bound properties.

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The optimal solution of the given linear program is (x, y) = (2, 1).

How to solve linear programming problems?

To solve the linear program, we first plot the feasible region determined by the constraints:

We can rewrite the second constraint as y >= (4 - Ax)/2.

Next, we plot the lines 3x - 4y = 12 and Ax + 2y = 4 - 2x and shade the appropriate regions:

We can see that the feasible region is bounded, so we can find the optimal solution by evaluating the objective function C at each of the corner points of the feasible region.

The corner points are:

Evaluating C at each corner point, we get:

Thus, the optimal solution is at (2, 1) with a minimum value of C = 11.

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To generate a sequence of pseudorandom numbers using the linear congruential generator xn+1 = (3xn+2) mod 13 with seed x0 = 1, we can simply apply the formula repeatedly.

Starting with x0 = 1, we have:

x1 = (3x0 + 2) mod 13 = (3 + 2) mod 13 = 5
x2 = (3x1 + 2) mod 13 = (15 + 2) mod 13 = 4
x3 = (3x2 + 2) mod 13 = (12 + 2) mod 13 = 1
x4 = (3x3 + 2) mod 13 = (5 + 2) mod 13 = 9
x5 = (3x4 + 2) mod 13 = (29 + 2) mod 13 = 4
x6 = (3x5 + 2) mod 13 = (14 + 2) mod 13 = 0
x7 = (3x6 + 2) mod 13 = (2 + 2) mod 13 = 4
x8 = (3x7 + 2) mod 13 = (14 + 2) mod 13 = 0
x9 = (3x8 + 2) mod 13 = (2 + 2) mod 13 = 4
...

The sequence appears to repeat every three terms: {1, 9, 4, 0, 4, 0, 4, ...}. This is a characteristic of linear congruential generators - the period of the sequence is at most m (the modulus), and in this case the period is exactly 3.

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The answer is : OA. The statement is false because the focal diameter determines the size of the opening of the parabola. The larger the focal diameter, the wider the parabola.

The statement is false because the size of the opening of a parabola is determined by the distance between its focus and directrix, not by the focal diameter. The focal diameter is defined as the distance between the two points on the parabola that intersect with the axis of symmetry and lie on opposite sides of the vertex. It is twice the distance between the focus and vertex.

In a standard parabolic equation of the form y = ax^2 + bx + c, the coefficient a determines the "width" of the parabola. If a is positive, the parabola opens upwards, and if a is negative, the parabola opens downwards. The larger the absolute value of a, the narrower the parabola.

Therefore, a parabola with a larger focal diameter actually has a wider opening, since it corresponds to a smaller absolute value of a in the standard equation. Hence, the statement "A parabola with focal diameter 3 is narrower than a parabola with focal diameter 2" is false.

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After 10 years, Debora's investment of $5000 in the savings account with a 5% annual interest rate, compounded yearly, will grow to approximately $6,633.16.

To calculate the value of Debora's investment after 10 years, we can use the formula for compound interest:

[tex]A = P(1 + r/n)^(nt)[/tex]

Where:

A is the final amount (the value of the investment after the given time period)

P is the principal amount (the initial deposit)

r is the annual interest rate (expressed as a decimal)

n is the number of times interest is compounded per year

t is the number of years

In this case, Debora deposits $5000 into the savings account with an annual interest rate of 5%, compounded yearly. Plugging in the values into the formula:

[tex]A = 5000(1 + 0.05/1)^(1*10)[/tex]

Simplifying the calculation:

[tex]A = 5000(1.05)^10[/tex]

Using a calculator or computing the value iteratively, we find:

A ≈ 5000 * 1.628895

A ≈ 6,633.16

Therefore, after 10 years, Debora's investment of $5000 in the savings account will grow to approximately $6,633.16. This means that the investment will accumulate approximately $1,633.16 in interest over the 10-year period, given the 5% annual interest rate compounded yearly.

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The component form of vector p is < -84.76, 48 >

Let's consider that vector p has magnitude |p| = 98 and a direction angle of 330°.

We can find the component form of vector p as follows:

A component form of vector

p = Let's draw the vector diagram for p with the given direction angle:

vector diagram of vector p

We can see from the above vector diagram that:

cos 330° = adjacent side/hypotenuse

=> p₁ / 98 = cos 330°

=> p₁ = 98 cos 330°

sin 330° = opposite side/hypotenuse

=> p₂ / 98 = sin 330°

=> p₂ = 98 sin 330°

Now, let's substitute the values of cos 330° and sin 330°:

p₁ = 98 cos 330° ≈ -84.76p₂ = 98 sin 330° ≈ 48

Therefore, the component form of vector p is < -84.76, 48 > (rounded to two decimal places).

The component form of vector p is < -84.76, 48 >. (approximately 78 words)

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[tex]\qquad \qquad \textit{inverse proportional variation} \\\\ \textit{\underline{y} varies inversely with \underline{x}} ~\hspace{6em} \stackrel{\textit{constant of variation}}{y=\cfrac{\stackrel{\downarrow }{k}}{x}~\hfill } \\\\ \textit{\underline{x} varies inversely with }\underline{z^5} ~\hspace{5.5em} \stackrel{\textit{constant of variation}}{x=\cfrac{\stackrel{\downarrow }{k}}{z^5}~\hfill } \\\\[-0.35em] ~\dotfill[/tex]

[tex]\stackrel{\textit{"y" varies inversely with "x"}}{y = \cfrac{k}{x}}\hspace{5em}\textit{we also know that} \begin{cases} x=3\\ y=3 \end{cases} \\\\\\ 3=\cfrac{k}{3}\implies 9 = k\hspace{9em}\boxed{y=\cfrac{9}{x}} \\\\\\ \textit{when x = 4, what's "y"?}\qquad y=\cfrac{9}{4}\implies y=2\frac{1}{4}[/tex]

When x = 4, y = 9/4. y will be equal to 9/4 or 2.25.

When a variable y varies inversely as x, it means that their product remains constant. We can represent this relationship mathematically as y = k/x, where k is the constant of variation.

To find the value of k, we can substitute the given values into the equation. Given that

y = 3 when x = 3,

we can write the equation as follows:

3 = k/3

To solve for k, we can multiply both sides of the equation by 3:

9 = k

Now that we have determined the value of k, we can use it to find y when x = 4. Substituting the values into the equation:

y = 9/4

Therefore, when x = 4, y = 9/4. Thus, y is equal to 9/4 or 2.25.

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According to some reports, the proportion of American adults who drink coffee daily is 0.54. Given that parameter, if samples of 500 are randomly drawn from the population of American adults, the mean and standard deviation of the sample proportion are 0.54 and 0.0223, respectively.

The standard deviation of a population or sample and the standard error of a statistic are quite different, related. The sample mean's standard is the standard deviation . The standard deviation of the set of means that would be found by  an infinite number of repeated samples,  from the population and computing a mean.

The mean's standard out to the equal the population, the standard deviation is divided by the square root of the sample size,  by using the sample standard deviation divided by the square root of the sample size. For a poll's standard is the expected standard deviation of the estimated mean if the same poll were to be conducted multiple times. Thus, the standard error estimates the standard deviation of an estimate, which itself measures how much the estimate depends on the particular sample that was taken from the population.

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