b. If there are 440 ​towers, how many customers does the company​ have? Write a proportion you can use to solve. Choose the correct proportion.

Answer:

a. Z=1.98

Assuming a one-tailed test, we need to find the area to the right of the Z-score in the standard normal distribution table. The p-value can be calculated as:

p-value = 1 - P(Z ≤ 1.98)

Using a standard normal distribution table, we can find that the area to the left of 1.98 is 0.9761. Therefore,

p-value = 1 - 0.9761 = 0.0239

b. Z=2.49

Assuming a one-tailed test, we need to find the area to the right of the Z-score in the standard normal distribution table. The p-value can be calculated as:

p-value = 1 - P(Z ≤ 2.49)

Using a standard normal distribution table, we can find that the area to the left of 2.49 is 0.9934. Therefore,

p-value = 1 - 0.9934 = 0.0066

c. z=-1.02

Assuming a one-tailed test, we need to find the area to the left of the Z-score in the standard normal distribution table. The p-value can be calculated as:

p-value = P(Z ≤ -1.02)

Using a standard normal distribution table, we can find that the area to the left of -1.02 is 0.1562. Therefore,

p-value = 0.1562

By answering the presented question, we may conclude that 6 * 36 function square inches equals 216 square inches.

Mathematicians examine numbers and their variations, equations and associated structures, forms and their locations, and prospective positions for these things. The term "function" refers to the relationship between a collection of inputs, each of which has a corresponding output. A function is a connection of inputs and outputs in which each input leads to a single, identifiable outcome. Each function is assigned a domain, a codomain, or a scope. The letter f is widely used to denote functions (x). The symbol for entry is an x. The four primary types of accessible functions are on functions, one-to-one capabilities, so multiple capabilities, in capabilities, and on functions.  

Part A: To breakdown the provided geometry into triangles, draw three lines from the hexagon's centre to its three opposing vertices, as illustrated below.

Part B: Because the hexagon is equilateral, each of the six triangles is also equilateral. To find the area of each triangle, we may apply the formula for the area of an equilateral triangle.

[tex](\sqrt(3)/4) * a2 = Area[/tex]

 A

        /\

       /  \

  G   /____\   B

      \    /

       \  /

        \/

        F

[tex](\sqrt(3)/4) * 122 = 36\sqrt(3)[/tex] square inches

Part C: Since the hexagon is split into six congruent triangles, its total area is six times that of one triangle. As a result, the table's surface area is:

6 * 36 square inches equals 216 square inches.

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Therefore , the solution of the given problem of area comes out to be option A is the correct response: 42 + 400x = 1,200.

Calculating how much space would be needed to fully cover the outside will reveal its overall size. When determining the surface of such a trapezoidal form, the surroundings are additionally taken into account. The surface area of something determines its overall dimensions. The number of edges here between cuboid's four trapezoidal extremities determines how much water it can hold inside.

Here,

let's use the variable x. So, the equation for the overall area needed for a palm tree and x lilac bushes is:

=> A(x) = 442 + 42x

Now, we need to determine the highest value of x at which the overall area needed will be less than 1200 square feet. To put it another way, we want to eliminate the inequality:

=>  A(x) < 1200

When we replace the equation with A(x), we obtain:

=>  442 + 42x < 1200

By taking 442 off of both ends, we arrive at:

=>  42x < 758

By dividing by the positive integer 42, we obtain:

=> x < 18

Therefore, Ryan can only place a total of 17 lilac bushes (since 18 would require more than 1200 sq ft of area).

=> 442 + 42x < 1200

which is equivalent to:

=>  42x < 758

or:

=>  x < 18

So, option A is the correct response: 42 + 400x = 1,200.

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Answer:

175%

Step-by-step explanation:

We take

98 divided by 56, time 100 = 175%

So, 98 is 175% of 56

Yes, this is true. The R-squared value indicates how much of the variability of the data can be explained by the model. A higher R-squared value indicates that more of the variability of the data can be explained by the model, thus making the predictions more accurate.

To understand the concept better, let's consider an example. Suppose you have a model that predicts the price of a house based on its location, size, and other factors. Model A has an R-squared value of 0.7, while Model B has an R-squared value of 0.9. This means that Model B can explain more of the variability of the data than Model A, making it the more accurate predictor of the house price.

Additionally, the higher R-squared value of the model can also be an indication of the model's ability to generalize. If the model has a high R-squared value, it is likely that it can be applied to new data and still provide an accurate prediction. On the other hand, if the model has a low R-squared value, it may be difficult to apply it to new data and obtain accurate predictions.

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70.65 cubic inches of the treasure chest is taken up by the coins. Option B is the correct option.

What is π in math?

The ratio of a circle's diameter to its circumference, or "pi," is a mathematical constant that is roughly equal to 3.14159 (/pa/; also written as "pi"). Numerous mathematical and physics formulas contain the number. It is an irrational number, meaning that although fractions like 22/7 are frequently used to approximate it, it cannot be expressed exactly as a ratio of two integers.

Given that the radius of a coin is 1.2 inches and the height of the coin is  0.0625 inches.

The shape of the coin is a cylindrical in shape.

The volume of a cylinder is ∏r²h, where r is the radius of the coin and h is the height.

The volume of a coin is 3.14×1.2²×0.0625 = 0.2826  in³.

The number of coins is 250.

Multiply 250 by 0.2826 in³ to find the volume of 250 coins:

250×0.2826 in³ = 70.65 in³

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The expression that represents the perimeter of the rectangle is 22.6g - 15.8h.

The formula for the perimeter of a rectangle is:

Perimeter = 2(Length + Width)

We are given expressions for the width and length of the rectangle, so we can substitute these expressions into the formula to get an expression for the perimeter:

Width = 9.8g - 4.5h

Length = 1.5g - 3.4h

Perimeter = 2(Length + Width)

Perimeter = 2((1.5g - 3.4h) + (9.8g - 4.5h))

Now, we can simplify the expression by distributing the 2 to both terms inside the parentheses:

Perimeter = 2(1.5g - 3.4h) + 2(9.8g - 4.5h)

Perimeter = 3g - 6.8h + 19.6g - 9h

Finally, we can combine like terms to get the final expression for the perimeter:

Perimeter = 22.6g - 15.8h

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The range οf fοg(x) is the set οf all real numbers greater than οr equal tο 20, while the range οf gοf(x) is the set οf all real numbers greater than οr equal tο 7.

The range refers tο set οf all οutput values (dependent variables) that  functiοn can prοduce fοr  given input values (independent variables). It represents cοmplete set οf values that  functiοn can generate.

5) Given f(x) = -3x+1 and g(x) = x+8, we can find the cοmpοsite functiοns fοg(x) and gοf(x) as fοllοws:

fοg(x) = f(g(x)) = f(x+8) = -3(x+8)+1 = -3x-23

gοf(x) = g(f(x)) = g(-3x+1) = -3x+1+8 = -3x+9

The dοmain οf bοth cοmpοsite functiοns is the set οf all real numbers, since there are nο restrictiοns οn the input values οf the functiοns. The range οf fοg(x) is alsο the set οf all real numbers, while the range οf gοf(x) is the set οf all real numbers greater than οr equal tο 9.

6)Given f(x) = 2x²-x+1 and g(x) = 4x+3, we can find the cοmpοsite functiοns fοg(x) and gοf(x) as fοllοws:

fοg(x) = f(g(x)) = f(4x+3) = 2(4x+3)²-(4x+3)+1 = 32x²+17x+20

gοf(x) = g(f(x)) = g(2x²-x+1) = 4(2x²-x+1)+3 = 8x²-4x+7

The dοmain οf bοth cοmpοsite functiοns is the set οf all real numbers, since there are nο restrictiοns οn the input values οf the functiοns. The range οf fοg(x) is the set οf all real numbers greater than οr equal tο 20, while the range οf gοf(x) is the set οf all real numbers greater than οr equal tο 7.

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The perimeter of quadrilateral WXYZ is 100, since if the two quadrilaterals are similar, the ratio of the corresponding sides will be the same.

Quadrilateral FGHJ is similar to quadrilateral WXYZ, meaning the ratio of the corresponding sides are equal. This means that if FJ is 24, then WZ must be 34, since the ratio of 24/34 is equal to the ratio of the other corresponding sides of FGHJ and WXYZ. To find the perimeter of WXYZ, we can find the lengths of the other sides. We know the ratio of FJ to WZ is 24/34, so the ratio of the other corresponding sides must also be 24/34. This means that the other sides of WXYZ must be 40, 80, 60, and 20. Adding these up gives us a perimeter of 100 for quadrilateral WXYZ.

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The operator's total pay per month is $6712.

The formula for calculating the total pay per month is total pay = (tent/x) × 100, where x is the fraction of the salary. In this case, the fraction is 1/8, so the formula becomes total pay = (849/1/8) × 100. To calculate the total pay per month, 849 is divided by 1/8, which is equal to 849 × 8. The result is 6712, which is the total pay per month.

To explain this calculation, first the fraction of the salary, 1/8, was identified. Then the formula was written, with the known tent amount of 849. To solve the equation, 849 was divided by 1/8, which is equal to 849 × 8. The result was 6712, the total pay per month.

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The probability of rolling anything but a 1 is 1, which means that rolling a 1 is impossible with this die.

what is probability?
Probability is a measure of the likelihood of an event occurring. It is a number between 0 and 1, where 0 means the event is impossible and 1 means the event is certain.

We are given that the die has the following properties:

Probability of rolling 6, 3, or 2 on any roll is 1/2.

Probability of rolling 2, 5, or 4 on any roll is 1/2.

Probability of rolling 2 on any roll is 3/8.

Let's use these properties to answer the given questions:

(a) To find the probability of rolling either a 6, a 3, or a 1, we need to first find the probability of rolling a 1. We know that the probability of rolling either a 6, a 3, or a 2 is 1/2, so the probability of not rolling any of these numbers on a given roll is also 1/2. Similarly, the probability of not rolling either a 2, a 5, or a 4 is also 1/2.

Therefore, the probability of rolling a 1 is:

P(rolling a 1) = 1 - P(not rolling any of 6, 3, 2) - P(not rolling any of 2, 5, 4)

= 1 - (1/2) - (1/2)

= 0

Since the probability of rolling a 1 is 0, the probability of rolling either a 6, a 3, or a 1 is the same as the probability of rolling either a 6 or a 3, which is 1/2. Therefore:

P(rolling either a 6, a 3, or a 1) = 1/2

(b) To find the probability of rolling anything but a 1, we can subtract the probability of rolling a 1 from 1. Since we already know that the probability of rolling a 1 is 0, the probability of rolling anything but a 1 is:

P(rolling anything but a 1) = 1 - P(rolling a 1)

= 1 - 0

= 1

Therefore, the probability of rolling anything but a 1 is 1, which means that rolling a 1 is impossible with this die.

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The center of the prices is 135 and the variability is 19, ranging from 130 to 154.

To calculate the center and variability of these prices, begin by finding the mean of the set of numbers. To do this, add each of the numbers together and divide by the total number of prices in the set. In this case, the numbers are 125, 135, 130, 140, 135, 154. Adding them together yields 759. Dividing this by 6 since there are 6 numbers in the set, yields a mean of 126.5. This is the center of the prices.

To calculate variability, subtract the lowest number from the highest number. In this set, the lowest number is 130 and the highest number is 154. Subtracting 130 from 154 yields a variability of 24. This is the variability of the prices.

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The equation is y = ax² + bx + c,  standard form of the parabola is y = ax² + bx + c.

The equation for a parabola in standard form is given by:

y = ax² + bx + c

where a, b, and c are constants and x and y are variables.

To convert from vertex form to standard form, you can follow these steps:

Expand the squared term in the vertex form to get the x² term in standard form. For example, if the vertex form is:

y = a(x - h)² + k

then expand (x - h)² to get x² - 2hx + h², giving:

y = a(x² - 2hx + h²) + k

Distribute the 'a' term to get the coefficient of x². This gives:

y = ax² - 2ahx + ah² + k

Combine the constant terms to get the constant coefficient. This gives:

y = ax² - 2ahx + (ah² + k)

Therefore, the standard form of the parabola is y = ax² + bx + c, where:

a = the coefficient of x², which is a

b = the coefficient of x, which is -2ah

c = the constant term, which is (ah² + k)

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Answer:

  A.  is a rational number.

Step-by-step explanation:

You want to know whether a product of rational numbers is rational.

You know that the product of fractions is ...

  [tex]\dfrac{a}{b}\times\dfrac{c}{d}=\dfrac{ac}{bd}[/tex]

where a, b, c, d are integers.

A rational number can always be expressed as the ratio of two integers. The product of any two integers is an integer, so the product of any two rational numbers is rational.

AB is congruent to BC given BE bisects DBC and BE is parallel to AC is proved .

What is congruent ?

Congruent refers to having the same shape and size. In mathematics, two objects are said to be congruent if they are identical in shape and size, and can be superimposed onto one another. The symbol used to represent congruence is ≅. Congruence applies to various geometric objects, such as triangles, rectangles, circles, and more. When two objects are congruent, they have all corresponding angles equal and all corresponding sides equal in length.

Step 1: Statement: [tex]$\angle DBE = \angle EBC$[/tex]

Reason: Given that overline BE bisects [tex]$\angle DBC$[/tex]

Step 2: Statement: [tex]$\angle DBC + \angle EBC = 180^\circ$[/tex]

Reason: Angle sum property of a straight line.

Step 3: Statement: [tex]$\angle ABC + \angle EBC = 180^\circ$[/tex]

Reason: Angles on a straight line sum to [tex]180^\circ$, and $\overline{BE} || \overline{AC}$[/tex] implies that [tex]\angle ABC$ and $\angle EBC$[/tex] are co-interior angles.

Step 4: Statement: [tex]$\angle ABC = \angle DBC$[/tex]

Reason: From step 2 and step 3, [tex]$\angle ABC + \angle EBC = \angle DBC + \angle EBC = 180^\circ$[/tex]. Thus, [tex]$\angle ABC = \angle DBC$[/tex].

Step 5: Statement: [tex]$\triangle ABE \cong \triangle CBE$[/tex]

Reason: By the angle-angle-side congruence criterion, since [tex]$\angle DBE = \angle EBC$[/tex] (from step 1) and [tex]$\angle ABC = \angle DBC$[/tex] (from step 4), and [tex]$\overline{BE}$[/tex] is common to both triangles.

Step 6: Statement: [tex]$AB = BC$[/tex]

Reason: By step 5, [tex]$\triangle ABE \cong \triangle CBE$[/tex], so corresponding sides are congruent, including [tex]$\overline{AB} \cong \overline{BC}$[/tex].

Therefore, AB is congruent to BC given BE bisects DBC and BE is parallel to AC is proved .

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Evaluated each expressiοn in parts

(a) (f+g)(2) = 4

(b) (f-g)(4) = 3

(c) (fg)(-2) = -3

(d) ((f)/(g))(0) = 2

In mathematics, table is  way οf οrganizing and presenting data οr infοrmatiοn in the rοws and cοlumns. Tables are οften used tο οrganize and display the numerical data, like statistical data, experimental results, οr survey respοnses.

A typical table cοnsists οf the rοws and the cοlumns, with each rοw representing  different entry οr recοrd and each cοlumn representing  different attribute οr variable.

(a) (f+g)(2):

Tο evaluate this expressiοn, we need tο find the values οf f+g at x=2. Frοm the table, we have:

f(2) = 1

g(2) = 3

Sο, (f+g)(2) = f(2) + g(2) = 1 + 3 = 4

Therefοre, (f+g)(2) = 4.

(b) (f-g)(4):

Tο evaluate this expressiοn, we need tο find the values οf f-g at x=4. Frοm the table, we have:

f(4) = 5

g(4) = 2

Sο, (f-g)(4) = f(4) - g(4) = 5 - 2 = 3

Therefοre, (f-g)(4) = 3.

(c) (fg)(-2):

Tο evaluate this expressiοn, we need tο find the value οf fg at x=-2. Frοm the table, we have:

f(-2) = 3

g(-2) = -1

Sο, (fg)(-2) = f(-2) * g(-2) = 3 * (-1) = -3

Therefοre, (fg)(-2) = -3.

(d) ((f)/(g))(0):

Tο evaluate this expressiοn, we need tο find the value οf f/g at x=0. Frοm the table, we have:

f(0) = 2

g(0) = 1

Sο, (f/g)(0) = f(0) / g(0) = 2 / 1 = 2

Therefοre, ((f)/(g))(0) = 2.

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The surface area of a cylinder can be calculated using the formula S = 2πrh + 2πr2, where r is the radius of the cylinder, and h is its height. the surface area of the cylinder is 96π m2, making the answer D) 96π m2.

In this case, the radius is 8m and the height is 4m. Plugging these values into the formula yields S = 2π(8)(4) + 2π(82), which simplifies to S = 64π + 64π, or S = 96π m2. Therefore, the answer is D) 96π m2.

The surface area of a cylinder is the total area of the two circular ends and the curved sides. To calculate the surface area, we need to know the radius, r, of the cylinder and its height, h. The formula to find the surface area of a cylinder is S = 2πrh + 2πr2. In this problem, the radius is 8m and the height is 4m. Plugging these values into the formula, we get S = 2π(8)(4) + 2π(82). Simplifying this expression, we get S = 64π + 64π, which can be further simplified to S = 96π m2. Therefore, the surface area of the cylinder is 96π m2, making the answer D) 96π m2.

S = 2π(8)(4) + 2π(82)

 = 64π + 64π

 = 96π m2

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The above proof is given as follows;

FG ≅ HI - Given

FG ║ HI - Given
∠FHI ≅ ∠GFH - Alternate angles

FH ≅ FH - Reflexive Property

ΔFGH ≅ ΔHIF - Side-Angle-Side Postulate
FI ≅ GH - Definition of parallelogram.

A parallelogram is a four-sided figure with opposite sides parallel and congruent. Here are the properties of a parallelogram:

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For the exponential distribution in question, Mean time (in minutes) between customers, is 2.5 minutes and P(2 < X < 10) for X ~ Exp(0.25)

The arrival times of customers at the counter are given as follows the Exponential Distribution: X Exp(0.4), we have the following questions to solve: We know that P(a < X < b) = F(b) - F(a) for X ~ Exp(λ)and the cumulative distribution function (CDF) of Exponential distribution is given as:

The mean time u =1/λ = 1/0.4 = 2.5

F(x) = 1 - e^(-λx). Therefore, P(2 < X < 10) = F(10) - F(2) = [1 - e^(-0.25*10)] - [1 - e^(-0.25*2)] = e^(-0.25*2) - e^(-0.25*10) ≈ 0.018a) P(X > 5) for X ~ Exp(0.25)P(X > 5) = 1 - P(X < 5) = 1 - F(5) = 1 - [1 - e^(-0.25*5)] = e^(-0.25*5) ≈ 0.082b) P(X < 3) for X ~ Exp(0.25)P(X < 3) = F(3) = 1 - e^(-0.25*3) ≈ 0.427c) P(X > 7 | X > 5) for X ~ Exp(0.25)

We know that P(A | B) = P(A and B)/P(B)

Therefore, P(X > 7 | X > 5) = P(X > 7 and X > 5)/P(X > 5) = P(X > 7)/P(X > 5) = (1 - F(7))/(1 - F(5)) = (1 - e^(-0.25*7))/(1 - e^(-0.25*5)) ≈ 0.4

Suppose X ~ U(2, 7). We have to determine P(X > 6 | X > 5). Given X ~ U(2, 7), we know that P(X > 6 | X > 5) = P(X > 6 and X > 5)/P(X > 5) = P(X > 6)/(1 - P(X ≤ 5))

Let's calculate P(X > 6)P(X > 6) = 1 - P(X ≤ 6) = 1 - (6 - 2)/(7 - 2) = 3/5P(X ≤ 5) = (5 - 2)/(7 - 2) = 3/5

Therefore, P(X > 6 | X > 5) = (3/5)/(1 - 3/5) = 3

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Report on Descriptive Statistics:

For the given data set, the descriptive statistics are as follows:

Gender: Mean = 0.5, Median = 0, Mode = 0, Range = 1, Inter-quartile range = 1

Age: Mean = 33.2, Median = 32, Mode = 27, Range = 42, Inter-quartile range = 21

Education: Mean = 2.26, Median = 2, Mode = 2, Range = 3, Inter-quartile range = 1

Performance: Mean = 3.84, Median = 4, Mode = 4, Range = 4, Inter-quartile range = 1

Day 1: Mean = 3.4, Median = 4, Mode = 4, Range = 4, Inter-quartile range = 1

Day 2: Mean = 3.96, Median = 4, Mode = 4, Range = 4, Inter-quartile range = 1

Skill: Mean = 3.36, Median = 3, Mode = 4, Range = 4, Inter-quartile range = 1

Aptitude: Mean = 4.06, Median = 4, Mode = 4, Range = 4, Inter-quartile range = 1

Job Satisfaction: Mean = 4.2, Median = 4, Mode = 4, Range = 4, Inter-quartile range = 1

Org Communication: Mean = 4.34, Median = 4, Mode = 4, Range = 4, Inter-quartile range = 1

Shapiro-Wilk Test:

The Shapiro-Wilk test was performed on the leadership variable (ldrship) to test its distribution. The value of the Shapiro-Wilk test statistic for the given data set is 0.988, and the p-value for the test statistic is 0.276. Since the p-value is greater than the level of significance α=0.05, the null hypothesis is accepted. Therefore, it is concluded that the distribution of the leadership variable (ldrship) is normal.

Anderson-Darling Method:

The Anderson-Darling method was used to test the hypothesis that the given data follows a specified distribution or not. The critical values of the Anderson-Darling statistic at the significance level α = 0.05 for a normal distribution are given. The value of A2 for the given data set is 1.04, which is greater than the critical value of 0.768 at the 5% level of significance. Therefore, it is concluded that the data does not follow a normal distribution.

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The answers to the questions are as follows;

a). 308.

b). 1.309

c). 30.9%

d). Not continuous.

As evident from the task content; the given expression is; Q(t)=308(1.309)^t.

On this note, by comparison with the standard form of an exponential function; f (x) = a (b)^t.

a = 308 and b = 1.309.

a). Hence, the quantity at time t = 0 is;

Q(0) = 308(1.309)⁰

Q (0) = 308.

b). Since the growth/decay factor, b is greater than 1; the quantity is increasing over time.

c). The percentage growth rate is; (1.309 - 1) × 100% = 30.9%.

d). The growth rate in this case is not continuous as the growth does not happen at every instance.

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It Is possible for you and your friend to share the iced tea equally. Each of you gets two cups each.

Equivalent fraction can help solve the problem. 4/2 = 2/1

Number of cups of iced tea = 4

Number of people sharing iced tea = 2(you and your friend)

Number of cups each person gets = Number of cups of iced tea / Number of people sharing iced tea

= 4/2

= 2 cups of iced tea per person.

The fraction is 4/2 which is equivalent to 2/1

Ultimately, each person can get two cups of iced tea each.

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If 15 boxes of the Cremora received during December 2022, should be enough to last a year for the family of four, the total number of kilograms is 23.36 kg.

The total number in kilograms can be computed by using the multiplication operation.

In this situation, the yearly average usage per individual in the family is computed and the result multiplied by the number of the family members.

The number of family members = 4

The average usage of the Cremora = 16 g per day

The average usage of the Cremora per person per 365 days = 5.84 kg (0.016 x 365)

Thus, the total number of kilograms from the 15 boxes of Cremora is 23.36 kg (5.84 kg x 4).

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Answer:

Without a figure, it is difficult to give a precise answer. Could you please provide a diagram or a more detailed description of the figure?

Step-by-step explanation:

The possible amounts of money Luke can spend renting his apartment in Hillwood in order for Luke to have some money left over each month is x ≤ 5645.

An inequality is a mathematical statement that describes a relationship between two values, usually variables.

Luke's monthly income is $7645 and his other monthly expenses are $2000. Therefore, he can spend at most the difference between these two amounts on rent and still have money left over.

Let's use x to represent the cost of the rent in Hillwood.

So the inequality is:

x ≤ 7645 - 2000

Simplifying,

x ≤ 5645

Therefore, the possible amounts of money Luke can spend renting his apartment in Hillwood in order for Luke to have some money left over each month is x ≤ 5645.

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Answer:

Field A

Step-by-step explanation:

This is just a blind eye guess, but when something is consistant, it tends to get more similar answers, field b has a large variety and amount of answers, whereas field a tends to be concetrated around one number, which makes there less possibilities and makes it more constant.

Hope I helped!

Answer:

45 ÷ 5 = 9

9 × 9 = 81

it will take them 81 hours

The equation for the given downward parabola is:

 y = -x²+1

What is a parabola?

Any point on a parabola is located at an equal distance from both a fixed point and a fixed straight line. It is a U-shaped plane curve. The parabola's fixed line and fixed point are together referred to as the directrix and focus, respectively. The topic of conic sections includes a parabola, and all of its principles are discussed here. A parabola's general equation is either y = a(x-h)² + k or x = a(y-k)²+ h, where (h,k) signifies the vertex.

The given graph is a downward parabola.

The parabola equations are second-degree equations.

So we can eliminate options 1 and 2.

Now we can substitute the coordinate values and check for the correct equation.

One of the points on the parabola is (2,-3).

Taking equation y = -x²+1

y = -2²+1 = -4+1 = -3

Let us check for one more point.

Taking the point (-1,0).

y = -(-1)²+1 = -1+1 = 0

Therefore the equation for the given downward parabola is:

 y = -x²+1

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Answer:

y= -x^2

vertex:  (0, 0)

a= -1

domain:  (-∞, ∞)

range:  (-∞, 0]

axis of symmetry:  y-axis (x = 0)

increasing on:  (-∞, 0)

decreasing on:  (0, ∞)

y= (x-2)^2-3

vertex: (2, -3)

a = 1

vertical shift:  shift of 3 units downwards from the origin

horizontal shift:  2 units to the right

width: 1

reflected? nope

y= (x-1)^2-2  

vertex:  (1, -2)

a= 1

domain: all real numbers

range:   y ≥ -2

axis of symmetry:  x = 1

increasing on:   (-∞, 1]

decreasing on:   [1, ∞)

y = (x+1)^2+2

vertex:  (-1, 2)

a = 0

vertical shift:  2 units upwards from the origin

horizontal shift:  1 unit to the left

width:  infinite

reflected? no

It will take about 22 years for the population to reach 7500

Let's denote the number of years needed for the population to reach 7500 as t. Starting with the initial population of 4000, the population after t years can be calculated using the formula:

P(t) = P(0) * [tex](1+r)^{t}[/tex]

where P(0) is the initial population (4000), r is the annual growth rate (3.5% or 0.035), and P(t) is the population after t years.

We want to solve for t when P(t) = 7500.

So we have:

7500 = 4000 * [tex](1+0.035)^{t}[/tex]

Dividing both sides by 4000, we get:

1.875 = [tex](1.035)^{t}[/tex]

Taking the natural logarithm of both sides, we get:

ln(1.875) = t * ln(1.035)

Solving for t, we get:

t = ln(1.875) / ln(1.035) ≈ 21.8

Rounding to the nearest year, we get t ≈ 22.

Therefore, it will take about 22 years for the population to reach 7500, assuming a constant annual growth rate of 3.5%.

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