calculate the relative frequency p(e) using the given information. n = 400, fr(e) = 200

To find the value of g in the given problem, we can use the slope-intercept form of a linear equation and the coordinates of the two points on the line.

The slope-intercept form of a linear equation is given by y = mx + b, where m represents the slope and b represents the y-intercept. In this case, we are given the slope of the line, which is 22.

We also have two points on the line: (4, g) and (-9, -9). We can use these points to find the value of g.

Using the coordinates (4, g), we can substitute the x-coordinate (4) and the y-coordinate (g) into the slope-intercept form. The equation becomes g = 22(4) + b.

Using the coordinates (-9, -9), we can substitute the x-coordinate (-9) and the y-coordinate (-9) into the slope-intercept form. The equation becomes -9 = 22(-9) + b.

By solving these two equations simultaneously, we can find the value of g. The value of g is the solution to the equation g = 22(4) + b.

Without further information or additional equations, it is not possible to determine the value of g uniquely. More context or equations are needed to solve for g accurately.

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The population standard deviation for this data set is approximately 1.225.

So, the correct answer is B.

The question asks for the population standard deviation of a student's study hours over four days, which are 3, 6, 3, and 4 hours.

To calculate the population standard deviation, follow these steps:

1. Find the mean (average): (3 + 6 + 3 + 4) / 4 = 16 / 4 = 4

2. Calculate the squared differences from the mean:

(3-4)² = 1, (6-4)² = 4, (3-4)² = 1, (4-4)² = 0

3. Find the mean of the squared differences: (1 + 4 + 1 + 0) / 4 = 6 / 4 = 1.5 4.

Take the square root of the mean of the squared differences: √1.5 ≈ 1.225

Hence the answer of the question is B.

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To obtain the essential prime implicants and a minimum sum of products (SOP) expression for the complement of the function, we need to analyze the map shown in the figure. The essential prime implicants are the minimal combinations of input variables that cover at least one minterm that is not covered by any other implicant.

By examining the map, we can identify the minterms that are not covered by any larger implicant. These minterms correspond to the "don't care" or "X" entries in the map. We then identify the prime implicants that cover these essential minterms.

The essential prime implicants are minimal combinations of variables that are necessary to cover these minterms. We select the essential prime implicants that cover the essential minterms and combine them to form the minimum SOP expression for the complement of the function.

To obtain the minimum SOP expression, we use the selected essential prime implicants and combine them with necessary non-essential prime implicants to cover the remaining minterms in the function. This process ensures that the resulting expression is minimal, with the fewest terms and variables required to represent the function.

By analyzing the map, identifying the essential prime implicants, and combining them appropriately, we can derive a minimum SOP expression for the complement of the function.

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From the given information, the area of the rectangle is 55 square units.There are different methods to find the perimeter of a rectangle. One such method is using the area and length of the rectangle.

Using this method, we can express the width of the rectangle in terms of length and area as follows:

Area of a rectangle = length x width55

= length x width

Width = 55/length

Substitute the value of width in terms of length into the formula for the perimeter of a rectangle.

P = 2(length + width)P

=[tex]2(length + \frac{55}{length})[/tex]

Simplify the expression by distributing the 2 over the parentheses.

[tex]2length + \frac{110}{length})[/tex]

Differentiate the expression with respect to length to find the minimum value of P.

P' = 2 - 110/length²

Solve for P' = 0 to find the critical point.

2 = 110/length²

length² = 110/2

length² = 55

length = sqrt(55)

Substitute the value of length into the formula for the perimeter to find the perimeter.

[tex]P = 2\sqrt{55} + \frac{110}{\sqrt{55}}P[/tex]

= 2sqrt(55) + 2sqrt(55)P

= 4sqrt(55)

Therefore, the perimeter of the rectangle is 4sqrt(55) units. This answer is exact.

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The amount that is closest to the value of the car 10 years after it was purchased is $5,500. The correct option is (C) $5,500.

We can model the car value data using an exponential function of the form:

V(t) = Ve⁻ᵇⁿ

where V(t) is the car value at time t, V is the initial car value, e is the mathematical constant e (approximately 2.71828), and b is a constant that determines the rate of decay of the car value.

To find the exponential function that models the data, we can use the fact that the car value is $17,000 when n = 1, and use one of the other data points to solve for k:

$17,000 = Ve⁻ᵇ

V = $17,000/e⁻ᵇ

$14,450 = Ve⁻²ᵇ

$14,450 = $17,000/e⁻ᵇVe⁻²ᵇ

e⁻³ᵇ = $17,000/$14,450

e⁻³ᵇ = 1.1768

-3b = ln(1.1768)

k = -0.0885

Therefore, the exponential function that models the car value data is:

V(t) = $17,000e⁻⁰⁸⁸⁵ⁿ

To find the value of the car 10 years after it was purchased, we can simply plug in t = 10 into the function:

V(10) = $5,499.45

Therefore, the amount that is closest to the value of the car 10 years after it was purchased is $5,500. The answer is (C) $5,500.

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n = 5, which means that the value of n falls in the range 3 < n < 6.

The correct answer is (A).

Finding the value of n for an n x n square matrix A with three distinct eigenvalues and the dimension of each of its eigenspaces being 2 or less, given that A is diagonalizable.
A matrix is diagonalizable if and only if the sum of the dimensions of its eigenspaces is equal to the size of the matrix, which in this case is n.
Since there are three distinct eigenvalues and the dimension of each eigenspace is 2 or less, the maximum possible sum of the dimensions of the eigenspaces is[tex]3 \times 2 = 6.[/tex]

However, if the sum were equal to 6, the eigenspace dimensions would be 2, 2, and 2, which would mean there are 4 distinct eigenvalues, contradicting the given information.
Therefore, the sum of the dimensions of the eigenspaces must be less than 6.

Given that there are three eigenvalues, the only possible sum of eigenspace dimensions is 5, with dimensions 2, 2, and 1 for each eigenvalue.

The correct answer is (A).
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The sum of the dimensions of the eigenspaces equals the dimension of the matrix, n, we know that 3 ≤ n ≤ 6. Therefore, the answer is (A) 3 < n < 6.

We know that A is diagonalizable, which means that it can be written in form A = PDP^-1, where D is a diagonal matrix whose entries are the eigenvalues of A, and P is a matrix whose columns are the eigenvectors of A.

Since A is an n x n square matrix with exactly three distinct eigenvalues and is diagonalizable, we know that the sum of the dimensions of its eigenspaces must equal n.

Let the three distinct eigenvalues be λ1, λ2, and λ3, with eigenspaces E1, E2, and E3 respectively. We are given that the dimension of each eigenspace is 2 or less, so:

dim(E1) ≤ 2, dim(E2) ≤ 2, and dim(E3) ≤ 2.

Now, we can write the sum of the dimensions of the eigenspaces:

dim(E1) + dim(E2) + dim(E3) = n.

Since each dimension is at most 2, the maximum value of the sum is:

2 + 2 + 2 = 6.

However, we know that there are three distinct eigenvalues, so each eigenspace must have a dimension of at least 1. Therefore, the minimum value of the sum is:

1 + 1 + 1 = 3.

Combining this information, we can conclude that:

3 ≤ n ≤ 6.

Hence, the value of n falls in the range (A) 3 < n < 6.

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Therefore, the given trigonometric identity is verified, as both sides of the equation have the same terms.

I understand you would like to verify the given trigonometric identity. We will break down the solution step by step:
Given identity: (1-sin^2(t) + cos(t))^2 + 4sin^2(t)cos^2(t) = 4cos^2(t)(1-sin^2(t) + cos^2(t))^2 + 4sin^2(t)cos^2(t)
Step 1: Recall the Pythagorean identity: sin^2(t) + cos^2(t) = 1
Step 2: Replace sin^2(t) with (1 - cos^2(t)) in the given identity:
(1-(1-cos^2(t)) + cos(t))^2 + 4(1-cos^2(t))cos^2(t) = 4cos^2(t)(1-(1-cos^2(t)) + cos^2(t))^2 + 4(1-cos^2(t))cos^2(t)
Step 3: Simplify the expression:
(2cos^2(t) + cos(t))^2 + 4(1-cos^2(t))cos^2(t) = 4cos^2(t)(2cos^2(t) + cos(t))^2 + 4(1-cos^2(t))cos^2(t)
Step 4: Observe that both sides of the equation have the same terms, which verifies the identity.

Therefore, the given trigonometric identity is verified, as both sides of the equation have the same terms.

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Hence, the zero of the given function is x = -5 and x = 5.

In order to find the zero of the given function, we need to substitute the values given for x in the function and find the value of y. Then, the zero of the function is the value of x for which y becomes zero. Here's how we can find the zero of the given function :f(x) = (x + 1)(x - 5)Substitute x = -5:f(-5) = (-5 + 1)(-5 - 5) = (-4)(-10) = 40Substitute x = 5:f(5) = (5 + 1)(5 - 5) = (6)(0) = 0Substitute x = 1:f(1) = (1 + 1)(1 - 5) = (2)(-4) = -8Substitute x = -1:f(-1) = (-1 + 1)(-1 - 5) = (0)(-6) = 0.Therefore, option A and option B are correct.

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The value of probability that Fazio selects a striped jersey both times is,

⇒ 1 / 25

Since,

A probability is the number of desired outcomes divided by the number of total outcomes.

In this problem:

For each jersey, there are possible options, two of which are striped, is,

2+5+3 = 10

So, twice shirts probability,

⇒ 2/10

p = (2/10)² = 4/100 = 1/25

Thus, The value of probability that Fazio selects a striped jersey both times is,

⇒ 1 / 25

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98.6 degrees Fahrenheit is a widely known value for normal human body temperature, recent data suggests that this figure may not accurately represent the average body temperature for healthy individuals, with variations depending on factors like age, gender, and environmental conditions

Normal human body temperature, commonly taught as 98.6 degrees Fahrenheit (37 degrees Celsius), is based on historical data from the 19th century. However, recent research suggests that the actual average body temperature for healthy individuals may be slightly lower than this widely accepted value.
Researchers conducted a study using body-temperature measurements from randomly chosen healthy people. The data collected demonstrated that the actual average body temperature could be closer to 98.2 degrees Fahrenheit (36.8 degrees Celsius) or even lower, depending on factors such as age, gender, and time of day.
These findings support the notion that 98.6 degrees Fahrenheit may not be an accurate representation of the average body temperature for all individuals. Factors like ethnicity and geographical location can also influence the average body temperature., while 98.6 degrees Fahrenheit is a widely known value for normal human body temperature, recent data suggests that this figure may not accurately represent the average body temperature for healthy individuals, with variations depending on factors like age, gender, and environmental conditions.

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The blanks when completed are

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

The dataset

By the definition of null and alternate hypotheses, we have

μ = 98.6 is the null hypothesis

μ ≠ 98.6 is the alternate hypothesis

Using a graphing tool, we have the following:

This means that the standard deviation is

s = 0.680

Also, we have

n = 69

Next, we have

df = n - 1

So, we have

df = 69 - 1

df = 68

To calculate the t-statistic, we use:

t = (x - μ) / (s / √(n))

So, we have

t = (98.546 - 98.6) / (0.680 / √(69))

Evaluate

t = -0.65

The absolute value of the t-value (0.65) is greater than the critical value (0.05).

So, we reject the null hypothesis

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Question

Normal human body temperature, as kids are taught in North America, is 98.6 degrees F. But how well is this supported by data? Researchers obtained body-temperature measurements on randomly chosen healthy people.

μ = 98.6 is the ____ hypothesis

μ ≠ 98.6 is the ____ hypothesis

s = ____

n =

df = ____

t = _______

Can we reject the null hypothesis? (enter yes or no for your answer)

The estimated regression equation is:

[tex]$y = 420.1 + 0.778x$[/tex]

To find the estimated regression equation, we need to perform linear regression analysis on the given data. We will use the least squares method to find the line of best fit.

First, let's calculate the mean and standard deviation of the rent and size variables:

[tex]$\bar{x} = 1192$[/tex] (mean of size)

[tex]$\bar{y}= 1337$[/tex] (mean of rent)

[tex]$s_x = 404.9$[/tex] (standard deviation of size)

[tex]$s_y= 390.3 $[/tex](standard deviation of rent)

Next, we can calculate the correlation coefficient between the rent and size variables:

[tex]$r = \frac{\sum_{i=1}^{n}(x_i - \bar{x})(y_i - \bar{y})}{\sqrt{\sum_{i=1}^{n}(x_i - \bar{x})^2}\sqrt{\sum_{i=1}^{n}(y_i - \bar{y})^2}} = 0.807$[/tex]

Now, we can use the formula for the slope of the regression line:

[tex]$b = r\frac{s_y}{s_x} = 0.807\frac{390.3}{404.9} = 0.778$[/tex]

And the formula for the intercept of the regression line:

[tex]$a = \bar{y} - b\bar{x} = 1337 - 0.778(1192) = 420.1$[/tex]

Therefore, the estimated regression equation is:

[tex]$y = 420.1 + 0.778x$[/tex]

where y is the monthly rent and x is the size of the apartment.

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Two ordered pairs have the same combination, you need to add 1 more ordered pair, making it 26 ordered pairs in total.

To guarantee that there are two ordered pairs (a1, b1) and (a2, b2) such that a1 mod 5 = a2 mod 5 and b1 mod 5 = b2 mod 5, we need at least 25 ordered pairs of integers (a, b).

This is because there are 5 possible remainders when dividing by 5 (0, 1, 2, 3, 4), and we need to have at least 2 ordered pairs with the same remainder for both a and b.

Therefore, we need at least 5 x 5 = 25 ordered pairs of integers to guarantee this condition.

To guarantee that there are two ordered pairs (a1, b1) and (a2, b2) such that a1 mod 5 = a2 mod 5 and b1 mod 5 = b2 mod 5, you need 26 ordered pairs of integers (a, b).
Using the Pigeonhole Principle, you have 5 possible remainders for both a (mod 5) and b (mod 5), which creates 5x5 = 25 possible combinations.

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Answer:

Step-by-step explanation:

To determine how long it would take Anita and Chao to clean a pool together, we can use the concept of work rates.

Anita can clean a pool in 8 hours, so her work rate is 1/8 of a pool per hour.

Chao can clean a pool in 6 hours, so his work rate is 1/6 of a pool per hour.

To find their combined work rate, we add their individual work rates:

1/8 + 1/6 = 3/24 + 4/24 = 7/24

Their combined work rate is 7/24 of a pool per hour.

To determine how long it would take them to clean a pool together, we can set up the equation:

(7/24) * T = 1

Where T represents the time it takes them together to clean the pool.

To solve for T, we multiply both sides of the equation by the reciprocal of (7/24), which is (24/7):

T = (1) * (24/7) = 24/7

Therefore, it would take Anita and Chao working together approximately 24/7 hours to clean a typical pool.

Using rational exponents 361^(1/2) can be written as 2√361 and simplified to 19.

To use the definition of rational exponents to write 361^(1/2) with the appropriate root and simplify, follow these steps:

1. Recall the definition of rational exponents: a^(m/n) = n√(a^m), where a is the base, m is the numerator, and n is the denominator of the exponent.
2. Apply the definition to 361^(1/2). In this case, a = 361, m = 1, and n = 2.
3. Rewrite 361^(1/2) using the definition: 2√(361^1).
4. Since raising 361 to the power of 1 doesn't change its value, the expression becomes 2√(361).
5. Simplify the square root of 361: √361 = 19.

So, 361^(1/2) can be written as 2√361 and simplified to 19.

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By using  piecewise functions the values of  [tex]\lim_{\theta \to \pi^+} h(\theta)[/tex] is 1 and  [tex]\lim_{\theta \to \pi/2^-} h(\theta)[/tex] is -1

The given functions are h(θ)=cos2θ, θ<π/2

h(θ)=tanθ/2,   π/2<θ≤π

h(θ)=sinθ/2, θ ≥π

Now let us find the value of [tex]\lim_{\theta \to \pi^+} h(\theta)[/tex]

[tex]\lim_{\theta \to \pi^+} \frac{ sin(\theta)}{2}[/tex]

This is a right hand limit which we take the values greater than π.

Apply the limit theta as pi.

sinπ/2

We know that sin90 degrees is 1.

[tex]\lim_{\theta \to \pi^+} h(\theta)[/tex]=1

Now [tex]\lim_{\theta \to \pi/2^-} h(\theta)[/tex]

This is a left hand limit which we take the values lesser than π/2.

[tex]\lim_{\theta \to \pi/2^-} cos(2\theta)[/tex]

Now apply the limit theta as π/2.

cos2(π)/2

[tex]\lim_{\theta \to \pi/2^-} h(\theta)[/tex] = -1

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The possible values of ∠H in the triangle ΔHIJ are 18.38° and 161.62° to the nearest tenth of a degree.

Given:In ΔHIJ, h = 9.2 inches, j = 9 inches, and ∠J = 19°.

We need to find all possible values of ∠H, to the nearest 10th of a degree

Solution:

Angle sum property of triangle states that the sum of interior angles of a triangle is 180°.

Let ∠H = xBy applying the angle sum property of the triangle, we get

∠H + ∠I + ∠J = 180°

⇒ x + ∠I + 19° = 180°

⇒ ∠I = 180° - x - 19°

⇒ ∠I = 161° - x

Using the sine rule, we get

sin x/sin 19° = h/jsin x/sin 19°

= 9.2/9sin x

= sin 19° × 9.2/9sin x

= 0.3184x

= sin⁻¹ 0.3184

∴ x = 18.38° or

x = 161.62°

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For a regular polygon of n sides, we need to use the formula (n-2) * 180°.

To determine how many degrees would be in "one turn" of any regular polygon, you can use the following method:

To determine how many degrees would be in "one turn" of the regular polygon, simply multiply the measure of each interior angle by the number of sides: [(n-2) * 180 / n] * n.

The final expression simplifies to (n-2) * 180°

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In linear algebra, a subspace of a vector space is a subset of vectors that satisfies certain properties.

(a) To show that {(x1, x2)T | x1 + x2 = 0} forms a subspace of R2, we need to show that it satisfies the three conditions for a subspace:

i. The zero vector is in the set: (0,0)T is in the set because 0 + 0 = 0.

ii. The set is closed under addition: Let (a,b)T and (c,d)T be in the set. Then a + b = 0 and c + d = 0. We need to show that (a + c, b + d)T is also in the set. (a + c) + (b + d) = (a + b) + (c + d) = 0 + 0 = 0, so (a + c, b + d)T is in the set.

iii. The set is closed under scalar multiplication: Let (a,b)T be in the set and let c be a scalar. We need to show that c(a,b)T is also in the set. c(a,b)T = (ca, cb)T, and ca + cb = c(a + b) = c(0) = 0, so c(a,b)T is in the set.

Since the set satisfies all three conditions for a subspace, we can conclude that {(x1, x2)T | x1 + x2 = 0} forms a subspace of R2.

(b) To show that {(x1, x2)T | x21 = x22} does not form a subspace of R2, we only need to show that it fails one of the conditions for a subspace.

Take (1, -1)T and (1, 1)T, which are both in the set since 12 = (-1)2. However, their sum (2, 0)T is not in the set since 22 ≠ 0. Therefore, the set is not closed under addition and does not form a subspace of R2.

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Dim Row A = 6 and Dim Col A = 6.

If the null space of a 7x9 matrix is 3-dimensional, then by the rank-nullity theorem, the rank of the matrix is:

Rank A = number of columns - dimension of null space

      = 9 - 3

      = 6

Therefore, Rank A = 6.

Since the rank of A is 6, the dimension of the row space of A is also 6 (because the row space is the orthogonal complement of the null space, and the sum of their dimensions equals the number of columns).

However, the number of rows of A is 7, so the row space cannot span all of R^7. Therefore, the row space of A has dimension less than or equal to 6.

Since the dimension of the row space of A is less than or equal to 6, and the rank of A is 6, it follows that the dimension of the column space of A (which is equal to the rank of A) is also 6.

Therefore, Dim Row A = 6 and Dim Col A = 6.

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Answer:

b

Step-by-step explanation:

A factor pair of a number is a pair of two numbers whose product is equal to that number.

[tex]1\cdot12=12\Rightarrow \checkmark\\2\cdot4=8\Rightarrow \textsf{x}\\2\cdot6=12\Rightarrow\checkmark\\3\cdot4=12\Rightarrow \checkmark\\3\cdot5=15\Rightarrow \textsf{x}\\[/tex]

The standard matrix A for the described linear transformation is:

A = [[-sqrt(2)/2, sqrt(2)/2],

    [sqrt(2)/2,  sqrt(2)/2]]

To determine the standard matrix A for the given linear transformation, we need to understand how each operation affects the standard basis vectors i and j.

(i) Rotating points through π/4 clockwise:

When we rotate a point through an angle α clockwise, the new x-coordinate is given by x' = cos(α)x - sin(α)y, and the new y-coordinate is given by y' = sin(α)x + cos(α)y. In this case, α = π/4.

Applying the rotation to the standard basis vectors, we have:

i' = cos(π/4)i - sin(π/4)j

= (1/sqrt(2))i - (1/sqrt(2))j

j' = sin(π/4)i + cos(π/4)j

= (1/sqrt(2))i + (1/sqrt(2))j

(ii) Reflecting points through the vertical x2-axis:

To reflect a point through the x2-axis, we negate the y-coordinate while keeping the x-coordinate unchanged.

Applying the reflection to the rotated basis vectors, we have:

i'' = (1/sqrt(2))i' - (1/sqrt(2))j'

= (1/sqrt(2))[(1/sqrt(2))i - (1/sqrt(2))j] - (1/sqrt(2))[(1/sqrt(2))i + (1/sqrt(2))j]

= (-sqrt(2)/2)i

j'' = (1/sqrt(2))i' + (1/sqrt(2))j'

= (1/sqrt(2))[(1/sqrt(2))i - (1/sqrt(2))j] + (1/sqrt(2))[(1/sqrt(2))i + (1/sqrt(2))j]

= (sqrt(2)/2)j

The resulting vectors i'' and j'' give us the columns of the standard matrix A.

Therefore, the standard matrix A for the described linear transformation is:

A = [[-sqrt(2)/2, sqrt(2)/2],

    [sqrt(2)/2,  sqrt(2)/2]]

This matrix can be used to transform any vector in R^2 through the specified sequence of operations: rotation by π/4 clockwise followed by reflection through the vertical x2-axis.

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Answer:

1 2/3

Step-by-step explanation:

V = L * W * H

1 7/8 =L * 3/4 * 3/2

1 7/8 = 9/8L

L = 1 2/3

A) The probability that a randomly selected coffee drinker does not use sugar or cream = 0.10

B) The probability that a randomly selected coffee drinker uses sugar or cream = 0.90

People who uses cream in coffee = 70%

P(C) = 0.7

People who uses sugar in coffee = 55%

P(S) = 0.55

People who uses both in coffee and sugar = 35%

P(C or S ) = 0.35

Probability that a randomly selected coffee drinker does not use sugar or cream  = 0.10

Area outside of the diagram mean who doesn't take either sugar or cream in coffee

The probability that a randomly selected coffee drinker uses sugar or cream = P(C) + P(S) - P(C OR S)

= 0.70 + 0.55 - 0.35

= 0.90

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To obtain 6 cups of Roquefort dressing, we need 1 lb of Roquefort cheese, 2 cups of sour cream, 2 cups of mayonnaise, 1/4 cup of white wine vinegar, and 1 1/3 tbsp of sugar.

To obtain 6 cups of Roquefort dressing from a recipe that makes 1 1/2 cups, we need to scale up the ingredients by a factor of 4. To find the amount of each ingredient in the scaled-up recipe, we multiply the original amounts by 4. The ingredients and their scaled-up amounts are as follows:

a. Roquefort cheese: 4 oz (original amount) x 4 = 16 oz or 1 lb (scaled-up amount)

b. Sour cream: 1/2 cup (original amount) x 4 = 2 cups (scaled-up amount)

c. Mayonnaise: 1/2 cup (original amount) x 4 = 2 cups (scaled-up amount)

d. White wine vinegar: 1 tbsp (original amount) x 4 = 4 tbsp or 1/4 cup (scaled-up amount)

e. Sugar: 1 tsp (original amount) x 4 = 4 tsp or 1 1/3 tbsp (scaled-up amount)

Therefore, to obtain 6 cups of Roquefort dressing, we need 1 lb of Roquefort cheese, 2 cups of sour cream, 2 cups of mayonnaise, 1/4 cup of white wine vinegar, and 1 1/3 tbsp of sugar.

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Hello!

x = 1 score

the mean:

16x/16 = 8

x = 8

so the sum of the 16 scores = 8 × 16 = 128

verify:

128/16 = 8

If a set of 16 scores has a mean of 8, the sum of the scores is 128.

Given: Total number of scores =  16

Mean of scores = 8

The formula for calculating the mean of a given data is given as,

x = ∑x / n ...........(i)

where x⇒ mean of scores,

∑x ⇒ sum of the scores

n⇒ total number of scores,

∴ Putting the relevant values in equation (i), we get,

8 = ∑x /16

⇒ ∑x  = 8 x 16 ;

∴ ∑x = 128

So, if a set of 16 scores has a mean of 8, the sum of the scores is 128.

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Hence, the total volume of Marva's house and garage is 52000 ft³.Note: To solve this question, we have to calculate the volume of both the house and the garage separately and then add their volumes to get the total volume of Marva's house and garage.

Given, Length of house, l = 80 ft Breadth of house, b = 30 ft Height of house, h = 20 ft Volume of house = l × b × h = 80 × 30 × 20 = 48000 ft³Length of garage, l = 20 ft Breadth of garage, b = 20 ft Height of garage, h = 10 ft volume of garage = l × b × h = 20 × 20 × 10 = 4000 ft³The total volume of the house and the garage is: 48000 + 4000 = 52000 ft³

Hence, the total volume of Marva's house and garage is 52000 ft³.Note: To solve this question, we have to calculate the volume of both the house and the garage separately and then add their volumes to get the total volume of Marva's house and garage.

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The inflection points of the curve [tex]y=x + log3(x^2+5)[/tex]are at x = -√(5) and x = √(5).

To find the inflection point(s) of a function, we need to find the second derivative of the function and set it equal to zero. If there are multiple solutions to this equation, then those values of x are the inflection points.

Let's start by finding the first derivative of the function:

[tex]y = x + log3(x^2+5)[/tex]

[tex]y' = 1 + (2x)/(ln(3)(x^2+5))[/tex]

Next, let's find the second derivative:

[tex]y'' = (2ln(3)(x^2+5) - 4x^2ln(3))/(x^2+5)^2[/tex]

Now, let's set y'' equal to zero and solve for x:

[tex](2ln(3)(x^2+5) - 4x^2ln(3))/(x^2+5)^2 = 0[/tex]

[tex]2ln(3)(x^2+5) - 4x^2ln(3) = 0[/tex]

[tex]2ln(3)x^2 + 10ln(3) - 4ln(3)x^2 = 0[/tex]

[tex]2ln(3)x^2 - 4ln(3)x^2 + 10ln(3) = 0[/tex]

[tex]-2ln(3)x^2 + 10ln(3) = 0[/tex]

[tex]2x^2 = 10[/tex]

[tex]x^2 = 5[/tex]

x = ±√(5)

Therefore, the inflection points of the curve [tex]y=x + log3(x^2+5)[/tex] are at x = -√(5) and x = √(5).

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