square root of negative 49

The equation which he used to perform the analysis is

Price = + Age + ε .

An analyst utilizes data from 20 recent transactions to estimate fee = 0 + 1 Age + in order to study the relationship between a used car's promoting charge and age.

In the table that follows, a fraction of the regression effects are displayed.

Coefficients Standard

Error        test stat    p-value

Detect 21,228.95, 738.41, 28,750, and 1.70E-16

Age −1,206.23 129.97 2.78E-08

Describe the opposing theories so that you can decide if the selling price of a used car and its age are linearly related or not.

H0: β1 ≥ 0; HA: β1 < 0

H0: β1 = 0; HA: β1 ≠ 0

H0: β1 ≤ 0; HA: β1 > 0

selling cost

Every day, we benefit from special circumstances when we want to compute or assess things. scenarios, particularly those involving the sale or purchase of goods.

The selling price is used to market the item at a specific price and can be computed by using the formula for the promotion fee. The selling charge is the sum the customer spends to purchase the item.

The price a customer pays to purchase a good or service is the actual promoting rate.

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When 15 squares are knit in three hours, 265 squares are knit in 53 hours.

A part, share, or quantity is a percentage when it is compared to the total. It can be any number between 0 and 1, 0, or 1. A number or percentage can be used to represent it. The percentage of Canadians who reside in a certain province is one illustration from official statistics. A unique kind of ratio called a percentage has the numerator and denominator combined. An illustration is the ratio of deaths to men, which is calculated by dividing deaths to men by deaths to men and women (i.e. the total population).

Here,

Let x be hours does it take Teresa to knit 265 squares,

3/15=x/265

3*265/15=x

x=53 hours

It takes 53 hours to knit 265 squares when it takes 3 hours to knit 15 squares.

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Answer:

4

Step-by-step explanation:

Because

The value of n is 1.6 if 4.8=3n by using simplest method.

A mathematical equation links the two phrases on either side of the sign. It typically simply has an equal sign and one variable. similar to 2x - 4 = 2. Simple equations are used to demonstrate the relationship between two terms when they are positioned on each side of an equal sign. Simple equations are all used to follow the four mathematical operations of addition, subtraction, multiplication, and division.

By employing the shorthand symbol for "equal to" (=), it ensures that both expressions of the equation are equal. Equations utilize arithmetic operations like addition, subtraction, division, and multiplication to balance the expressions on both sides.

4.8=3n

Dividing on both sides with 3, we get

3n/3=4.8/3

n=1.6

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The general solution for  mx" + Bx' = mg for r(t) is x(t) = 25e^(-x/5) + 5x -125

According to the question,

The given equation =  mx" + Bx' = mg

Also , mg = 160, B = 1, and g = 32

=> m = 160/g

=> m = 160/32 = 5

Substituting the values in equation ,

5x" + x' = 160 , x(0) = -100, x' (0) = 0

The characteristic equation of the homogeneous differential equation is

5x" + x' = 0

=>  5r² + r = 0

=> r = 0 , -1/5

The complementary solution is x = c₁e⁰ + c₂e⁻⁰°²

Solution for complementary is yc = ax + b

Substitute yc = ax + b in  5x" + x' = 160 to get

5(0) + a = 160

=> a = 160

So the general solution is

x(t) = 25e^(-x/5) + 5x -125

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The value of f(-2) is -8 and the value of [tex]f(v+1)=\frac{3v+1}{|v+2|}[/tex] for the given function [tex]f(v)=\frac{3v-2}{|v+1|}[/tex].

Given function is

[tex]f(v)=\frac{3v-2}{|v+1|}[/tex]

To evaluate f(-2), we need to substitute v = -2 in the given function.

So, on substituting v = -2, we get

f(-2) = (3(-2) - 2)/|-2+1|

      = (-6 - 2)/|-1|

      = -8/1

Since we know that |-a| = a; we can write |-1| = 1.

Thus, f(-2) = -8

To evaluate f(v+1), we need to substitute v = v+1 in the given function.

So, on substituting v = v+1, we get

f(v+1) = (3(v+1) - 2)/|v+1+1|

        = (3v+3-2)/|v+2|

        = (3v+1)/|v+2|

Thus, f(v+1) = (3v+1)/|v+2|.

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The expensive a car that you can afford is $42666.42.

What is interest rates?

The amount a lender charges a borrower is called an interest rate, and it is expressed as a percentage of the principal, or the loaned amount. Typically, a loan's interest rate is expressed as an annual percentage rate, or APR (APR).

Given that you can deposit $325 each month. The interest rates is 4.25%.

Future Value of an Ordinary Annuity

[tex]S = R[\frac{(1+i)^n-1}{i}][/tex]

where

S is the future value;

R is the periodic payment;

i is the interest rate per period;

n is the number of periods.

The value of R is $325, i = 0.0425/12 = 0.00354

n = (12 × 9) =108

The future value is

[tex]S = 325[\frac{(1+0.00354)^{108}-1}{0.00354}][/tex]

S = 42666.42

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The finite population correction factor is not used when you sample without replacement from less than 5% of a finite population.

When you sample without replacement from more than 5% of a finite population, the Finite Population Correction Factor (FPC) is applied.

The Central Limit Theorem does not apply in this situation, and the estimated standard error (such as the mean or proportion) will be excessive. Basic differences between sampling with replacement and sample without replacement are captured by the FPC.

It is employed to modify a variance estimate for an estimated mean or total in order to limit the scope of the variance to that fraction of the population that is not included in the sample.

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Benjamin's walk described as a composition of two translations is (8, 0) and (2, 3) respectively.

The translation walks from his house directly to school is (10, 3)

A translation is a type of transformation that moves every point in a figure by a fixed distance in a certain direction. This can be thought of as sliding the figure along a straight line.

Looking at the image:

The coordinate of  Benjamin's house is (5,4) and he walks to Timothy's house (13, 4) and then to school (15, 7)

The displacement vector from Benjamin's house to Timothy's house is (13, 4) - (5, 4) = (8, 0), which represents an 8 unit move to the right.

The displacement vector from Timothy's house to school is (15, 7) - (13, 4) = (2, 3), which represents a 2 unit move to the right and a 3 unit move up.

Thus, Benjamin's walk can be described as a composition of two translations can be represented using displacement vectors as (8, 0) and (2, 3) respectively.

If Benjamin walks from his house directly to school:

The displacement vector from Benjamin's house directly to Timothy's house is (15, 7) - (5, 4) = (10, 3), which represents 10 units move to the right and 3 units up.

Thus, the translation describes his walk is (10, 3)

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The maximum volume of the box is 40√(10/27) cu in.

Here we see that volume is to be maximized

The surface area of the box is 40 sq in

Since the top lid is open, the surface area will be

lb + 2lh + 2bh = 40

Now, the length is equal to the breadth.

Let them be x in

Hence,

x² + 2xh + 2xh = 40

or, 4xh = 40 - x²

or, h = 10/x - x/4

Let f(x) = volume of the box

= lbh

Hence,

f(x) = x²(10/x - x/4)

= 10x - x³/4

differentiating with respect to x and equating it to 0 gives us

f'(x) = 10 - 3x²/4 = 0

or, 3x²/4 = 10

or, x² = 40/3

Hence x will be equal to 2√(10/3)

Now to check whether this value of x will give us the max volume, we will find

f"(2√(10/3))

f"(x) = -3x/2

hence,

f"(2√(10/3)) = -3√(10/3)

Since the above value is negative, volume is maximum for x = 2√(10/3)

Hence volume

= 10 X 2√(10/3)  -  [2√(10/3)]³/4

= 2√(10/3) [10 - 10/3]

= 2√(10/3) X 20/3

= 40√(10/27) cu in

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Complete Question

(Image Attached)

So option B. F(x)= 2x3/2- 3/2x² is the correct option of the given statement.

Using just the operations of addition, subtraction, multiplication, and non-negative integer exponentiation of variables, a polynomial is an expression in mathematics made up of variables (also known as indeterminates) and coefficients.

The formulas that only contain addition, subtraction, multiplication, and non-negative integer exponents are those that can be used to identify the polynomials. The expressions with other operations will be non-polynomial expressions. Justify the expressions' lack of polynomial status.

A polynomial function is a function in an equation, such as the quadratic equation, cubic equation, etc., that only uses non-negative integer powers or only positive integer exponents of a variable. A polynomial with an exponent of 1 is, for instance, 2x+5.

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No, we do not have enough information to find out the percentage of Americans who either do not follow football or do not follow basketball. We would need to know the percentage of Americans who do follow both sports.

When the denominator is 100, percentages are really just fractions. We place the percent symbol (%) beside a number to indicate that it is a percentage. For instance, if you answered 75 out of 100 questions correctly on a test, you would have received a 75%.

The percent sign (%), which denotes a division by 100, is used. Therefore, 25% translates to 25/100, or 1/4. Dividing by 100 will change a percentage to a decimal. Therefore, 25% is equal to 25/100, or 0.25. A decimal can be multiplied by 100 to become a percentage (just move the decimal point 2 places to the right)

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The absolute value of the expression |-25.6| + |-11.4| gives a resultant modulus of 37

The absolute value (or modulus) | x | of a real number x is the non-negative value of x without regard to its sign. For example, the absolute value of 5 is 5, and the absolute value of −5 is also 5. The absolute value of a number may be thought of as its distance from zero along real number line.

Whenever a value is in an absolute value, the result must always be positive no matter what it is. I.e the modulus of any number is always positive.

In the given expression;

|-25.6| + |-11.4| = 37

The modulus of the expression is 37

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The chi-square test is 5.02 higher than critical value 3.841 so the two states does not differ with regards of shopping habits, and p value is 0.025.

O = observed value

E = expected value

n = size of sample = 2

df = degree of freedom = n - 1 = 2 - 1

α = significance level = 5% = 0.05

Chi-square is a one of many test statistic, chi-square is a test to see the different from observed value and expected value.

Chi-square formula is,

[tex]\chi^2[/tex] = [tex]\sum\frac{(O_i - E_i)^2}{E_i}[/tex]

Since, in question only give us the observed value, we need to calculate the expected value first.

Expected value conscientious state A can be calculate by this formula

E(ca) = total of state A value × total of conscientious value ÷ grand total

Repeat this process to all observed value.

We use excel to simplified and for precise calculation. Then, we put the obtained value from excel formula to Chi-square formula,

[tex]\chi^2[/tex] = 0.69 + 1.69 + 0.76 + 1.88

= 5.02

a) Critical value for df = 1 and α = 0.05 from chi-square table is 3.841

Since, the result is 5.02 higher than 3.841, it can be concluded that the two states does not differ with regards of shopping habits.

Assumptions for we use is the study group is independent and the each expected value is higher than 5.

b) We use chi-square p-value calculator with P([tex]\chi^2[/tex] > 5.02) and df = 1, α = 0.05. So, we get 0.025.

Thus, two states doesn't differ with regards of shopping habits since chi-square result is higher than critical value, and p value is 0.025.

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The original number that could have been rounded to the nearest hundredth thousand to 700,000 is given as follows:

Any number between 650,000 and 749,999.

The hundredth thousand numbers are given as follows:

Then the numbers are rounded as follows:

Then the interval is given as follows:

Numbers between 650,000 and 749,999.

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The equation of the perpendicular line is y = -5x + 18

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

y = 1/5x + 3

Also, from the question;

We have the following points

Point = (4, -2) i.e.  (x, y) = (4, -2)

The equation of a line can be represented as

y = mx + c

Where

Slope = m

By comparing the equations, we have the following

m = 1/5

This means that the slope is 1/5

The slopes of perpendicular lines are opposite reciprocals

This means that the slope of the other line is -5

The equation of the line is then calculated as

y = m(x - x₁) +y₁

Where

m = -5

(x₁, y₁) =  (4, -2)

So, we have

y = -5(x - 4) - 2

Evaluate

y = -5x + 18

Hence, the line has an equation of y = -5x + 18

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In the transformation of triangle abc, the pre-image of b' is b.

It's a triangle denoted as abc. abc is changed so that the resulting image is a'b'c''. It should be noted that there are many other forms of transformations, including dilation, vertical shift, horizontal shift, rotation about a point, reflection on a line, etc.

Corresponding vertices will be matched in all transformations. In other words, a will change to a'', b to b', and c to c''. Preimage of b' would just be b itself due to the transformation's ability to maintain image similarity and convert vertices appropriately.

Note that the correct question is:

In the transformation ABC A'B'C', the preimage of B' is ____.

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It is a convergent series as both component series are geometric with ratios less than 1, so they both converge. The sum is 7/15.

If the sequence is converging (or converges), the series is convergent. The total of its partial sums tends to a limit; that is, while adding one after the other in the sequence specified by the indices, partial sums move closer and closer to a particular number. A divergent series is an infinite series that is not convergent, which means that the infinite sequence of the series' partial sums has no finite limit. If a series converges, the series' individual terms must approach zero.

Here,

sum(3/4ⁿ)₁₋ₓ  -  sum(1/2⁴ⁿ⁺¹)₁₋ₓ

sum(3/4ⁿ)₁₋ₓ=1

sum(1/2⁴ⁿ⁺¹)₁₋ₓ=8/15

=1-8/15

=7/15

It is a convergent series since both component series are geometric and have ratios smaller than one. The total is 7/15.

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The dimension of the triangle with the shortest hypotenuse is 2.98.

Here we have to find the dimensions of the triangle.

Given data:

the point given as (8/9, 3) and both passes through x and y-axis.

Let the slope of the line be m.

The line passing through (8/9,

Slope(m) =  (y-3)/{x-(8/9)

y-3=m{x-(8/9)

y-mx=3–8m/9.

As this along with the coordinate axes make the right angled ∆, for the shortest hypotenuse

The x and y the intercepts for the line. So,

y/(3–8m/9)+x/{(3-8m/9)/(-m)}=1.

Where y intercept=(3–8m/9),

x intercept={(8m/9–3)/m.

So the length of hypotenuse;

Hypotenuse(h) = √[{(8m/9–3)/m}²+(3–8m/9)²]|

                         =|(8m/9–3)√(1+m²)/m

So the length of the hypotenuse is to be minimum for m, the hypotenuse is (19/9)×√2=2.98.

Therefore we get the hypotenuse as 2.98.

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Answer:

To multiply decimals, first multiply as if there is no decimal. Next, count the number of digits after the decimal in each factor. Finally, put the same number of digits behind the decimal in the product.

Step-by-step explanation:

A GENERAL NOTE: CHARACTERISTICS OF THE GRAPH OF THE PARENT FUNCTION  [tex]f(x) = b^{x}[/tex]

-It’s a one-to-one function

-The graph passes through y-intercept of the point (0,1)

-x-intercept: none

-The domain is all real numbers: (−∞,∞)

-The range is y > 0 or (0,∞)

-The graph is increasing

-The graph is asymptotic to the x-axis as x approaches negative infinity

-Horizontal asymptote: y=0

-The graph increases without bound as x approaches positive infinity

-Increasing if b > 1

-Decreasing if b < 1

-The graph is continuous

-The graph is smooth

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a) The approximate mean shipping time: X{bar} = 1.64

b) The approximate variance and standard deviation:

S² = 27.03, σ = 5.2

In this question, we have been given the frequency distribution of shipping times (number of hours between the time an order is placed and the time the order is shipped) for a random sample of 40 orders.

We need to find the approximate mean shipping time, variance and standard deviation.

Number of Hours        fi                midpoint

      4 < 10                  8                    7

     10 < 16                15                  13

     16 < 22                10                  19

     22 < 28                  7                   25

       SUM:                  40

a) the approximate mean shipping time:

X{bar} = (7.8 + 13.15 + 19.10 + 25.7)/40

X{bar} = 65.75/40

X{bar} = 1.64

b) the approximate variance:

S² = [(7.8 - 1.64)² + (13.15 - 1.64)²+(19.10 - 1.64)²+(25.7 - 1.64)²] / 39

S² = 1054.16/39

S² = 27.03

And the standard deviation:

σ = √S²

σ = √27.03

σ = 5.2

Therefore, for given frequency distribution,

a) mean = 1.64

b) variance = 27.03 and standard deviation = 5.2

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Answer:

Step-by-step explanation:

The given statement to reduce a rational number to its lowest terms, you first compute the greatest common divisor (gcd) of the numerator and the denominator, using Euclid's algorithm is correct.

What is Euclid's algorithm?

The Euclidean algorithm, also known as Euclid's algorithm, is an effective way to determine the greatest common divisor of two integers, or the biggest number that divides them both evenly without leaving a remainder. It is named after the Greek mathematician Euclid, who first discussed it in his Elements and gave it that name.

A common fraction can be reduced to its simplest terms using the Euclidean algorithm. For instance, the algorithm will demonstrate that the GCD of 765 and 714 is 51, and that 765/714 = 15/14 as a result. Additionally, it has several applications in more complex mathematics.

Hence, the given statement to reduce a rational number to its lowest terms, you first compute the greatest common divisor (gcd) of the numerator and the denominator, using Euclid's algorithm is correct.

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The worth of the CD at the end of the 5-year term would be = $3605.25

Annual interest is the amount of money that is being added to an primary capital of an investment or a property which increases with time.

The rate of annual interest = 5.3%

The time for the term = 5 years

The principal amount invested in the CD = $2,850

The simple interest = P×T×R/100

=2850×5×5.3/100

= 75525/100

= $755.25

Therefore, the worth of the CD at the end of the 5-year term would be =$2,850 + $755.25

= $3605.25

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Let f be a scalar field and F a vector field.

a) False-  can not take the curl of a scalar field.

b)True- it is a  vector fields.

c)True- it is a  scalar fields.

d)True- it is a vector fields.

e)False-  can not take grad of a vector field.

f)True- vector fields.

g)True- - scalar fields.

h)False-  can not take div of a scalar field.

i)True- - scalar fields.

j)False-  can not take div of a scalar field.

k)False-  can not cross product a vector with a scalar.

l)True- vector fields.

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Pedro earns $5.1 per hour more than Oliver

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

The hourly rate of Pedro is calculated using

Hourly rate = Amount earned/Number of hours

Substitute the known values in the above equation, so, we have the following representation

Hourly rate = 521.40/22

Evaluate

Hourly rate = 23.7

Using the points on Oliver's graph

The hourly rate of Oliver is calculated using

Hourly rate = Amount earned/Number of hours

Substitute the known values in the above equation, so, we have the following representation

Hourly rate = 186/10

Evaluate

Hourly rate = 18.6

The difference between these rates is

Difference = 23.7 - 18.6

Evaluate the difference

Difference = 5.1

Hence, the difference is $5.1

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The equation of a tangent line to the circle is, [tex]x^{2} +y^{2}[/tex] = 34

Given that,

The equation of a tangent line to the circle with center = (3,6)

The line contains point = (-2,3)

For a circle or curve, the tangent is a line or line segment that touches the circle at one point only. For a circle, the tangent will be perpendicular to a radius drawn to the tangent point.

A tangent to a circle at point P with coordinates is a straight line that touches the circle at P. The tangent is perpendicular to the radius which joins the centre of the circle to the point P. As the tangent is a straight line, the equation of the tangent will be of the form y = m x + c

The equation of circle of radius r and center (h , k) is given by

[tex](x-h)^{2}[/tex] + [tex](y-k)^{2}[/tex] = [tex]r^{2}[/tex]         (Equation-1)

And it is given that the center is (3,6) and it passes through (-2,3).

So values of h and k are (3,6) each and values of x and y are 2 and respectively .

Substituting these values in the equation, we will get

(h , k) = (3,6)

We can substitute h , k values in equation-1,

[tex](x-h)^{2}[/tex] + [tex](y-k)^{2}[/tex] = [tex]r^{2}[/tex]  

[tex](x-3)^{2}[/tex] + [tex](y-6)^{2}[/tex] = [tex]r^{2}[/tex]

Then we can substitute x , y values,

So,

We can write,

( x , y ) = (-2 , 3)

[tex](-2-3)^{2}[/tex] + [tex](3-6)^{2}[/tex] = [tex]r^{2}[/tex]

[tex](-5)^{2}[/tex] + [tex](-3)^{2}[/tex] = [tex]r^{2}[/tex]

25 + 9 = [tex]r^{2}[/tex]

34 = [tex]r^{2}[/tex]

Substituting the values of h, k and r, we will get

[tex]x^{2} +y^{2}[/tex] = 34

Therefore,

The equation of a tangent line to the circle is, [tex]x^{2} +y^{2}[/tex] = 34

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Answer:

Find the sum of 4.06 x 1019 and 5.034 x 1017, it equals to 9256.718

4.11034 x 1019 = 4188.43646

9.094 × 1019 = 9266.786

4.11034 x 1036 = 4258.31224

9.094 × 1036 = 9421.384

Step-by-step explanation:

4137.14 + 5119.578 = 9256.718