8. An escalator in a mall must lift customers to a height of 22 ft. If
angle between the escalator stairs and the ground floor will be 30°, what will be the
length of the escalator?

Answer:

Yes.

Step-by-step explanation:

Volume of box:

32 × 20 × 8 = 5,120 cubic centimeters

Volume of each brick:

4^3 = 64 cubic centimeters

5,120 ÷ 64 = 80 bricks

So Sam can fit all 75 bricks into the box.

Answer: The two triangles created by the bank shot are similar.

Step-by-step explanation: The measures of the triangles are as follows:

Triangle 1:

Angle A = 53.14 degrees, Angle B = 36.86 degrees, Angle C = 90 degrees

Triangle 2:

Angle A = 53.14 degrees, Angle B = 36.86 degrees, Angle C = 90 degrees

Yes, the two triangles are similar.

An engineer is hired to design a bridge to carry traffic across the river.  The length of the bridge is 324.35 meters.

To find the distance from point A to point B, we can use the Law of Sines. This states that the ratio of the length of a side of a triangle to the sine of the opposite angle is equal for all sides and angles of the triangle. In this case, we have:

AC/ sin(B) = AB/ sin(C)

We can plug in the given values and solve for AB:

250 m/ sin(49°52') = AB/ sin(90°)

Simplifying and rearranging, we get:

AB = (250 m * sin(90°))/ sin(49°52')

Using a calculator, we find that sin(90°) = 1 and sin(49°52') ≈ 0.7705. Plugging these values back into the equation, we get:

AB = (250 m * 1)/ 0.7705

AB ≈ 324.35 m

Therefore, the distance from point A to point B, and the length of the bridge, should be approximately 324.35 meters.

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The solution to the equation [tex]82-u=266[/tex] is [tex]u=-184[/tex].

To solve for u in the equation [tex]82-u=266[/tex], we can use the additive property of equality. The additive property of equality states that if you add the same value to both sides of an equation, the equation will still be true.

Step 1: We can start by isolating the variable u on one side of the equation. To do this, we can add u to both sides of the equation:

[tex]82-u+u=266+u[/tex]

Step 2: Simplify the equation by canceling out the u terms on the left side of the equation:

[tex]82=266+u[/tex]

Step 3: Next, we can use the additive property of equality again to isolate the variable u on one side of the equation. To do this, we can subtract 266 from both sides of the equation:

[tex]82-266=266+u-266[/tex]

Step 4: Simplify the equation by canceling out the 266 terms on the right side of the equation:

[tex]-184=u[/tex]

Step 5: The final step is to write the solution in the form of u=____. We can do this by simply switching the sides of the equation:

[tex]u=-184[/tex]

Therefore, the solution to the equation [tex]82-u=266[/tex] is [tex]u=-184[/tex].

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The leading term is -6r10; its coefficient is -6. The leading coefficient is -6. The constant term is -5.

Leading term is the term with the highest degree within an expression. It is the most important term and is used to determine the overall behaviour of a function.

The terms, degrees, and coefficients of the given polynomial are as follows:

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It's important to evaluate the fit of the equation to the data before making any predictions or decisions based on it.

To determine the linear equation that best represents the trend line for a given scatter plot, we need to find the line of best fit. The line of best fit is a straight line that represents the general trend of the data and can be used to make predictions or estimates based on the data.

One way to find the line of best fit is by using the method of least squares. This involves finding the line that minimizes the sum of the squared differences between each data point and the line itself.

Once we have the line of best fit, we can express it as a linear equation of the form y = mx + b, where m is the slope of the line and b is the y-intercept.

To determine the linear equation that best represents the trend line for a given scatter plot, we would need to perform the following steps:

Plot the scatter plot of the given data points.

Visually inspect the scatter plot to see if there appears to be a linear relationship between the variables.

Calculate the line of best fit using the method of least squares.

Express the line of best fit as a linear equation of the form y = mx + b.

Use the equation to make predictions or estimates based on the data.

It's important to note that the linear equation that best represents the trend line for a scatter plot may not always be a good predictor of the data, especially if the data is not linear or if there are outliers present.

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Answer:

-17p+100

______

4

Step-by-step explanation: combine multiplied terms into a single fraction. distribute. combine multiplied terms into a single fraction. find a common denominator. combine fractions with a common denominator. multiply the numbers.Rearrange terms.Combine multiplied terms into a single fraction.Cancel terms that are in both the numerator and denominator.Find common denominator.Combine fractions with common denominator.Distribute.Add the numbers.Combine like terms

Answer:

see explanation

Step-by-step explanation:

using the property of exponents

• [tex]a^{m}[/tex] × [tex]a^{n}[/tex] = [tex]a^{(m+n)}[/tex]

given

3x²[tex]y^{5}[/tex] × 4x³[tex]y^{7}[/tex] ( separate like parts in the product )

= 3 × 4 × x² × x³ × [tex]y^{5}[/tex] × [tex]y^{7}[/tex]

= 12 × [tex]x^{(2+3)}[/tex] × [tex]y^{(5+7)}[/tex]

= 12[tex]x^{5}[/tex][tex]y^{12}[/tex]

The center height of the tent is 1.57 meters.

Triangle is a polygon with three sides and three angles. It is one of the basic shapes in geometry. Triangles come in a variety of forms, including equilateral, isosceles and scalene. The sum of the three interior angles of a triangle is always 180°, making it one of the few geometric shapes whose angles add up to a fixed number. Triangles are the strongest shape, making them ideal for construction and engineering projects.

Using the formula for the volume of a triangular prism, V = B x H x L, we can determine the center height, h, of the tent:

V = B x H x L
12.6 = 2.8 x H x 4.5
H = 12.6 ÷ (2.8 x 4.5)
H = 1.57 meters

Therefore, the center height of the tent is 1.57 meters.

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1). The statement " If in the year 2000 the price index is 120 and the value of the price index in 2001 is 125, it implies that there was a 5% increase in the price level in 2001." is true. Percentage change = (New price index - Old price index) / Old price index x 100, Plugging in the values from the question:Percentage change = (125 - 120) / 120 x 100 = 4.17%. Therefore, there was a 4.17% increase in the price level in 2001. 2). The statement " The weighted aggregate price index assigns a lower weight to the items that are sold in higher quantities." is  False. This is false because these items have a greater impact on the overall price level

The price index measures the change in prices of a basket of goods and services from one period to another. In this case, the price index in 2000 is 120 and the price index in 2001 is 125. To calculate the percentage change in the price level, you can use the formula:

The weighted aggregate price index assigns a higher weight to the items that are sold in higher quantities. This is false because these items have a greater impact on the overall price level. For example, if the price of a popular item, such as gasoline, increases, it will have a greater impact on the overall price level than if the price of a less popular item, such as a luxury car, increases.

Therefore, the weighted aggregate price index assigns a higher weight to the items that are sold in higher quantities to accurately reflect their impact on the overall price level.

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The correct match of each root word with its meaning are :

(i) Anthropology⇔(d) man

(ii) Psychology⇔(c) mind    

(iii) Economy⇔(e) law  

(iv) Democracy⇔(b) people

(v) Judicious⇔(a) judge

The term (i) Anthropology is related to (d) man because,

The term "Anthropology" is called the study of human-societies and cultures and their development.

The term (ii) Psychology is related to (c) mind ,

The term "Psychology" is defined as the scientific-study of behavior and mental processes of mind;

The term (iii) Economy is related to (e) law,

The Economy can be termed as the social science that deals with the production, distribution, and consumption of goods and services and their management.

The economy and practices of commerce are governed by certain laws or principles. So,  the best option to match economy is law.

The term (iv) Democracy is related to (b) people ,

Democracy is defined as system of government by the whole population or all the eligible members of a state, typically through elected representatives.

The term (v) Judicious is related to (a) judge,

The word "judge" is a derived from the word "judicious", which means, showing and using sound judgement.

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The given question is incomplete, the complete question is

Match the below root of each word to its meaning.

(i) Anthropology       (a) judge

(ii) Psychology          (b) people

(iii) Economy             (c) mind

(iv) Democracy         (d) man

(v) Judicious              (e) law

Therefore, the retirement account must contain $2,758,686.58 when you retire in order to withdraw $4000 at the end of each quarter for 30 years.

To find the amount that the retirement account must contain when you retire, we can use the formula for the future value of an annuity due:

FV = PMT * [(1 + r/n)^(n*t) - 1] / (r/n) * (1 + r/n)

Where FV is the future value, PMT is the payment amount, r is the interest rate, n is the number of compounding periods per year, and t is the number of years.

In this case, PMT = $4000, r = 0.07, n = 4 (since the account is compounded quarterly), and t = 30.

Plugging these values into the formula, we get:

FV = 4000 * [(1 + 0.07/4)^(4*30) - 1] / (0.07/4) * (1 + 0.07/4)

FV = 4000 * [(1.0175)^120 - 1] / (0.0175) * (1.0175)

FV = 4000 * 11.9478 / 0.0175 * 1.0175

FV = $2,758,686.58

Therefore, the retirement account must contain $2,758,686.58 when you retire in order to withdraw $4000 at the end of each quarter for 30 years.

Round your final answer to the nearest cent, the retirement account must contain $2,758,686.58.

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The long division process is explained below.

Division is one of the operation in mathematics where number is divided  into equal parts as that of a definite number.

While doing long division method, you have to follow certain steps.

Consider an example 259 ÷ 9.

259 is the dividend, 9 is the divisor.

First consider the first digit of the dividend, which is 2. But 2 is not greater than or equal to 9.

So take the next digit also and so consider the first two digits.

The first two digits of the dividend is 25.

25 is not a multiple of 9.

The number which is a multiple of 9 nearer to but less than 25 is 18.

18 = 2 × 9.

Write 2 in the quotient and subtract 25 - 18 = 7

Now 7 is less than 9. So bring down the next (third) digit of the dividend, which is 9.

So the number we get is 79.

Again 79 is not a multiple of 9. The nearest lesser multiple of 9 is 72.

72 = 9 × 8

So write 8 in the quotient.

Remainder is 79 - 72 = 7

So we get the quotient as 28 and the remainder is 7.

Hence the simplification of the long division is explained.

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The only value of y that is a solution to the equation 40=5-7y is y=-5.

To identify solutions to a linear equation in one variable, we can plug in the given values of y and see if the equation is true.

For the first value of y, let's plug in y=1:
40=5-7(1)
40=5-7
40=-2

This equation is not true, so y=1 is not a solution to the equation.

Now let's try y=2:
40=5-7(2)
40=5-14
40=-9

This equation is also not true, so y=2 is not a solution to the equation.

Finally, let's try y=-5:
40=5-7(-5)
40=5+35
40=40

This equation is true, so y=-5 is a solution to the equation.

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The total number of people that die of the disease after the herd immunity threshold is reached can be determined by looking at the value of the R(t) curve after it reaches the herd immunity threshold.

i) The total population of the Portland-metro area, N, can be determined by looking up the population of the city, county, and other areas that make up the metro area.

ii) To determine the values of a and b, we need to look at the basic reproduction number, R0. For an SIR model, the constant a is equal to the basic reproduction number (R0=4.5), and the constant b is equal to (a/N).

iii) To determine the initial values S(0), I(0) and R(0), we can use the equation S(0)=N-5-0.15N, I(0)=5, and R(0)=0.15N.

iv) To solve the SIR model numerically, we need to create a differential equation for each variable (S, I, and R) and use numerical integration to solve the system. Then, a graph can be created to show the values of S, I, and R over time.

v) From the graph, we can see that the total number of people infected is equal to the peak of the I(t) curve.

vi) The total number of people that die from the disease is equal to the peak of the R(t) curve.

vii) The peak of the outbreak is at the time when the I(t) curve has its highest value.

viii) The outbreak is over when the I(t) curve reaches 0.

ix) The herd immunity threshold is reached when the R(t) curve reaches a value equal to the basic reproduction number (R0).

x) The total number of people that die of the disease after the herd immunity threshold is reached can be determined by looking at the value of the R(t) curve after it reaches the herd immunity threshold.

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The possible rational roots are:

±1/1, ±3/1, ±5/1, ±15/1, ±1/1, ±1/2, ±3/2, ±5/2, ±15/2

A function is a mathematical rule that assigns a unique output value for each input value. It is a set of ordered pairs where the first element is the input and the second element is the output.

To list all the possible rational roots of x⁴ - 2x³ -6x² + 22x - 15 = 0, we need to find all the factors of the constant term -15 (in this case, they are 1, -1, 3, -3, 5, -5, 15, and -15) and all the factors of the leading coefficient 1 (in this case, they are 1 and -1). Then, we form all possible fractions of the form p/q, where p is a factor of the constant term and q is a factor of the leading coefficient. Therefore, the possible rational roots are:

±1/1, ±3/1, ±5/1, ±15/1, ±1/1, ±1/2, ±3/2, ±5/2, ±15/2

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We can plot the two points (-2, 3) and (0, 4) and draw a straight line passing through both points. The resulting line has a slope of 1/2 and y-intercept of 4.

Graphs are used to help people understand and interpret information in a way that is easy to see and analyze. There are many different types of graphs, each with its own characteristics and applications.

Some common types of graphs include:

Line graph: A line graph displays data as a series of points connected by lines, typically used to show trends or changes over time.

Bar graph: A bar graph displays data as bars of different heights, typically used to compare values or quantities.

Pie chart: A pie chart displays data as a circle divided into slices, typically used to show proportions or percentages.

To find the y-coordinate for each x-coordinate, we can substitute each value of x into the equation y = (1/2)x + 4 and simplify:

When x = -2:

y = (1/2)(-2) + 4

y = -1 + 4

y = 3

So, the point (-2, 3) is on the line.

When x = 0:

y = (1/2)(0) + 4

y = 0 + 4

y = 4

So, the point (0, 4) is on the line.

We can complete the table as follows:

x y = (1/2)x + 4 y

-2 y = (1/2)(-2) + 4 3

0 y = (1/2)(0) + 4 4

To graph the line, we can plot the two points (-2, 3) and (0, 4) and draw a straight line passing through both points. The resulting line has a slope of 1/2 and y-intercept of 4.

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The data point 1.8 falls outside the range of 1.798, so it can be considered an outlier.

An outlier is a data point that is significantly different from other data points in a data set. Outliers can occur due to errors in data collection or measurement, or they can be legitimate data points that are simply far outside the range of the other data. In statistical analysis, it is important to identify outliers and decide whether to remove them from the data set or keep them and analyse them separately.

There are several methods for identifying outliers, including graphical methods and statistical methods such as the use of z-scores or the interquartile range.

To identify outliers in this data, we can start by calculating some basic statistical measures such as the mean and standard deviation.

The mean of the given data is:

(1.11 + 1.13 + 1.40 + 1.32 + 1.14 + 1.28 + 1.13 + 1.8 + 1.10 + 1.20) / 10 = 1.304

The standard deviation of this data is:

sqrt(((1.11 - 1.304)²  + (1.13 - 1.304)² + (1.40 - 1.304)² + (1.32 - 1.304)² + (1.14 - 1.304)² + (1.28 - 1.304)² + (1.13 - 1.304)² + (1.8 - 1.304)² + (1.10 - 1.304)² + (1.20 - 1.304)^2) / 9) = 0.247

One common rule of thumb for identifying outliers is to consider any data point that falls more than 2 or 3 standard deviations from the mean to be an outlier. Using this rule, we can identify any values that fall outside the range:

1.304 - 2 * 0.247 = 0.81

1.304 + 2 * 0.247 = 1.798

1.304 - 3 * 0.247 = 0.563

1.304 + 3 * 0.247 = 2.045

Based on this rule, we can see that the data point 1.8 falls outside the range of 1.798, so it can be considered an outlier.

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The amount of material, in square inches, needed to create the kite is A = [1/2(6)(8)].2. Option G is the correct answer.

Either of a triangle's two sides that are equal in length is said to be isosceles. This characteristic equates to the triangle's two angles being equal. Two of the sides and two of the angles of an isosceles triangle are equal. An isosceles triangle has three sides that are all the same length, have the same angles, and meet at symmetrical corners. Two right-angle triangles are produced if a perpendicular line is traced from the junction of two equal sides to the base of the unequal side.

The area of the triangle is given as:

A = 1/2(b)(h)

Here, the base = 6 and height = 8 in.

Thus, the area of the triangle is:

A = 1/2(6)(8)

The figure consists of 2 similar triangles. So, the area of the second triangle is added to get the final area.

A = [1/2(6)(8)].2

Hence, the amount of material, in square inches, needed to create the kite is A = [1/2(6)(8)].2. Option G is the correct answer.

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The answer is x(2-5x).

In factorization, you just need to identify the common factors and accordingly solve as per your requirement!

To factor the expression 2x-5x^(2) completely, we need to find the greatest common factor (GCF) of the two terms and factor it out. The GCF of 2x and 5x^(2) is x. So we can factor it out of the expression:

2x-5x^(2) = x(2-5x)

Now, the expression is factored in completely. The final answer is:

x(2-5x)

Therefore, factoring the expression 2x-5x^(2) gives the answer x(2-5x).

I hope this helps! Let me know if you have any further questions.

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Answer:

I think the question is incomplete

Answer:

Step-by-step explanation:

Dang, they made this a little harder. Now we need to actually calculate a slope. Good thing is, it's relatively easy. Slope is basically the rate of change, or the rise of the function over the run, which is shown as:

Δy/Δx

We can use two points to find the slope. I will use (2,795) and (4,1525)

(y1 - y2) / (x2 - x1)

(1525 - 795) / (4 - 2)

730 / 2

365

This is our slope, 365x.

Now we need the y-intercept, which is where the line hits the y-axis. It seems to be at 100, so the new equation is:

y = 365x + 100

If we want to know how many followers Lauren will have in 2018, we just use 7 for x years after 2011, since 2018 is 7 after 2011.

y = 365(7) + 100

y = 2555 + 100

y = 2655

Lauren has 2655 followers in 2018.

Station 6-

The x-intercept tells us when the depth below the sea level is 0 feet.

The y-intercept tells us the starting depth when the time is 0.

The meaning of the slope being -10x is that the depth below the sea level decreases 10 feet per minute. Hope this helps, and sorry for seeing this late!

hi

im pretty sure that this is the answer

hope this helps

good luck;)

There would be 40,320 ways can 8 people be arranged on 8 chairs in a row. There are 5,040 ways can 8 people be seated around a circular table. There are  128 committees can be selected from the people if ps has to be the chair of the committee

(a) The number of ways that 8 people can be arranged on 8 chairs in a row is 8! = 8 * 7 * 6 * 5 * 4 * 3 * 2 * 1 = 40,320. This is because there are 8 choices for the first chair, 7 choices for the second chair, and so on until there is only one choice for the last chair.

(b) The number of ways that 8 people can be seated around a circular table is (8-1)! = 7! = 7 * 6 * 5 * 4 * 3 * 2 * 1 = 5,040. This is because we can fix one person in one seat and then there are 7 choices for the next seat, 6 choices for the next seat, and so on until there is only one choice for the last seat.

(c) The number of committees that can be selected from the 8 people if Ps has to be the chair of the committee is 2^(8-1) = 2⁷ = 128. This is because there are 7 people left to choose from and each person can either be on the committee or not on the committee, which gives us 2 choices for each person.

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Answer 13

Step-by-step explanation:Place all numbers in order from youngest to oldest. and the one in the middle is the median

Answer:13

Step-by-step explanation:

The mean and the standard deviation of the binomial variable are given as follows:

The binomial distribution formula gives the probability of obtaining a specific number of successes in a fixed number of independent trials, where each trial has only two possible outcomes (success or failure) and the probability of success is constant throughout the trials.

The mass probability formula(PMF) is given by the equation presented as follows:

[tex]P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}[/tex]

[tex]C_{n,x} = \frac{n!}{x!(n-x)!}[/tex]

The parameters, along with their meaning, are listed as follows:

The parameter values for n and p in this problem are given as follows:

n = 3, p = 0.6.

The mean of the binomial distribution is given by the following equation:

E(X) = np.

Hence:

E(X) = 3 x 0.6

E(X) = 1.8.

The standard deviation of the binomial distribution is given by the following equation:

[tex]\sqrt{V(X)} = \sqrt{np(1 - p)}[/tex]

Hence:

[tex]\sqrt{V(X)} = \sqrt{3 \times 0.6 \times 0.4}[/tex]

[tex]\sqrt{V(X)} = 0.8485[/tex]

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The rate of change of with respect to for this function is 1.75.

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

P = (-2, -7.5)

Q = (4, 3)

Using the two given points, we can find the slope of the line passing through them using the slope formula:

slope = (y2 - y1) / (x2 - x1)

where (x1, y1) = (-2, -7.5) and (x2, y2) = (4, 3)

slope = (3 - (-7.5)) / (4 - (-2))

= 10.5 / 6

= 1.75

Hence, the rate of change (i.e., the slope) of the line passing through points P and Q is 1.75.

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To solve this problem, we first need to find a common denominator for the fractions in the parentheses.

The common denominator for 12 and 8 is 24, so we can rewrite the fractions as (14/24) and (9/24). Then, we can add these fractions together to get (14/24) + (9/24) = (23/24). Next, we can subtract this fraction from (3/8) by finding a common denominator for 8 and 24, which is 24. We can rewrite (3/8) as (9/24) and then subtract (23/24) from it to get (9/24) - (23/24) = (-14/24). Finally, we can simplify this fraction to get (-7/12).

So, the final answer is:
(3/8) - ((7/12) + (3/8)) = (3/8) - ((14/24) + (9/24)) = (9/24) - (23/24) = (-14/24) = (-7/12)

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The vector s₁ in the set can be expressed as a linear combination of the vectors s₂ and s₃:

s₁ = (-4/3)s₂ + (1/3)s₃

The set S = {(5,4),(−1,1),(2,0)} is linearly dependent if there exists a nontrivial linear combination of the vectors in the set whose sum is the zero vector. In other words, if there exists scalars a, b, and c such that:

a(5,4) + b(−1,1) + c(2,0) = (0,0)

Expanding the above equation gives us:

(5a - b + 2c, 4a + b) = (0,0)

This implies that:

5a - b + 2c = 0

4a + b = 0

Solving the above system of equations gives us:

a = 1/3, b = -4/3, c = 1/3

Therefore, the nontrivial linear combination of the vectors in the set whose sum is the zero vector is:

(1/3)(5,4) + (-4/3)(−1,1) + (1/3)(2,0) = (0,0)

To express the vector s₁ in the set as a linear combination of the vectors s₂ and s₃, we can use the above solution and write:

s₁ = (-4/3)s₂ + (1/3)s₃

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