An electric company foreman is recording the width of various types of electrical wire available. Which of the following displays could be used to represent the data, and why?

Bar chart; because wire width is categorical
Bar chart; because wire width is numerical
Box plot; because wire width is categorical
Box plot; because wire width is numerical

Answer:

120

Step-by-step explanation:

Don't know if this is a joke, but have a great day regardless!

Answer: 42 is a 19.231% decrease of 52.

gg against the jags yesterday

Using the standard deviation value of these interarrival times, the coefficient of variation is 0.012.

The standard deviation is a statistic that expresses how much variance or dispersion there is in a group of numbers. While a high standard deviation suggests that the values are dispersed throughout a wider range, a low standard deviation suggests that the values tend to be close to the established mean.

The standard deviation to mean ratio, or coefficient of variation (CV), illustrates the degree of variability in proportion to the population mean. The dispersion increases with increasing CV.

Formula is given by:

[tex]CV = \frac {\sigma}{\mu}[/tex]

[tex]\sigma = 0.02[/tex]

Mean for the time of 0.02 sec is = 79 * 0.02

=1.58

CV= 0.02/1.58

=0.012

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Here the missing component in this study is control group.

A control group is a group of participants used to compare different groups in a test or experiment. Consists of participants who did not receive an experimental treatment. Some experiments use multiple control groups to collect more information and improve the accuracy of the results. For example, many medical studies include positive, negative, and placebo control groups to better understand the effectiveness of a treatment or drug.

Given the circumstances, the energy drink company claims that its products boost memory in students. To back up its claims, the company publishes an ad claiming that eight out of 10 people (randomly selected across the country) who tried the product reported improved memory.

But they didn't compose a control group to compare the results for test.

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The complete question is as follows:

An energy drink company claims that its product increases students' memory levels. To support its claims, the company issues advertisements claiming that 8 out of 10 people (chosen randomly from across the country) who tried their product reported improved memory. The missing component in this study is a

A) control group

B) sample group

C) population

D) test group

Answer:

A. Control Group

Plato

The value of the notation Δy from the points (-3,-5) and (0,10) is 15

The complete question is added at the end of this solution

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

Points = (-3,-5) and (0,10)

Rewrite the above points properly

So, we have the following ordered pairs

(x, y) = (-3,-5) and (0,10)

The notation Δy represents the change in the y values of the given points

This notation can be extended to calculate the slope of the points

The slope of the line is then calculated using the following slope equation

Slope = (y₂ - y₁)/(x₂ - x₁)

Where

(x, y) = (-3,-5) and (0,10)

Substitute the known values in the above equation

So, we have the following equation

Slope = (10 + 5)/(0 + 3)

Evaluate the sum

Slope = 15/3

The numerator represents Δy

i.e. Δy= 15

Evaluate the quotients

Slope = 5

Hence, the slope of the line is 5 and the value of the notation Δy is 15

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Complete question

Using the given points, determine Δy

Type a numerical answer in the space provided.

(-3,-5) and (0,10)

Answer:

x = 1

Step-by-step explanation:

We are given an equation that will ultimately lead to a solution for the variable x.

To begin, we will first subtract 3 from both sides to move the constants to each side:

[tex]5=3+2x\\\\5-3=3-3+2x\\\\2=2x[/tex]

Then, divide both sides of the equation by 2 to remove the leading coefficient and isolate the variable:

[tex]2=2x\\\\\displaystyle \frac{2}{2}=\frac{2x}{2}\\\\x=1[/tex]

Therefore, x = 1.

Answer: x = 1

Step-by-step explanation: The equation is true without changing the value of x so x can only equal 1 so that the value of the numbers go unchanged. :)

The current population density  is 125 people / square kilometers.

Given :

plumeria island is an island in the indian ocean. the island is 4,000 square kilometers in size. currently, 500,000 people live there. last year, 150,000 children were born and 50,000 people immigrated. 100,000 people died and 10,000 emigrated. it is believed that the island could support up to 350 people per square kilometer.

Total people =  500000

Area = 4000 square kilometers

we know that ,

Population density = total people / area

= 500000 / 4000

= 500 / 4

= 125

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Answer:

To find the value of log1000, you can use the logarithmic property that states that log(a^b) = b * log(a). In this case, we can rewrite 1000 as 10^3, so log1000 = log(10^3) = 3 * log(10) = 3.

Answer:

No, because the bike order does not meet the restrictions of 4c + 6a ≤ 120 and 4c + 4a ≤ 100.

Step-by-step explanation:

According to the described situation, the system of inequalities that  best explains whether the company can build 20 child bikes and 6 adult bikes in the week is given by:

What is the system of inequalities?

Considering the variables c and a, for the number of child and adult bikes, respectively, we have that, considering the building time:

testing time When c = 20, a = 6:

Hence, the correct option is:

No, because the bike order does not meet the restrictions of 4c + 6a ≤ 120 and 4c + 4a ≤ 100.

Answer:

-3.7%, 0.3%,7%,17%,70%

Step-by-step explanation:

The required amount of her commission is given as $3937.5.

Given that,
A real estate agent sold a house for $315,000 last week. The commission is 1.25% of the selling price of the home,

The process in mathematics to operate and interpret the function to make the function or expression simple or more understandable is called simplifying and the process is called simplification.

Here,
Commission = 1.25% of $315000
Commission = 1.25× 315000/100
Commission = $3,937.5

Thus, the required amount of her commission is given as $3937.5.

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The number of tickets they purchased is 4.

The expression that would b used to represent the total cost at the carnival is a linear expression. A linear expression is an expression that has a single variable that is raised to the power of one.

The form of the linear expressions that can be used to represent the total cost at the carnival is:

Total cost = admission fee + (price per ride x number of rides)

Total cost in option 1 = $5 + 0.30r

Total cost in option 2 = $3 + $0.80r

Where r = number of rides

When they pay the same amount of money, the linear functions would be equal:

$5 + 0.30r = $3 + $0.80r

$5 - $3 = $0.80r - 0.30r

$2 = $0.50r

r = 2 / 0.5

r = 4

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The retail price of the driver of the clubs after will be $400.

The amount of any product is given as though it was a proportion of a hundred. The ratio can be expressed as a quarter of 100. The phrase % translates for one hundred percent. It is symbolized by the character '%'.

The percentage is given as,

Percentage (P) = [Final value - Initial value] / Initial value x 100

A golf store buys a driver at a discount cost of $200. Mr. Nganga discovered that the driver was increased by 100 percent.

The retail price of the clubs will be given as,

⇒ $200 x (1 + 100%)

⇒ $200 x (1 + 1)

⇒ $200 x 2

⇒ $400

The retail price of the driver of the clubs after will be $400.

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The equation for a line that passes through points (2,1) and (0,7) is y-7 = -3x or y= -3x+7

To find the equation of a line passing through two points you must first find the slope of the line.

The slope can be found by using the formula: [tex]m=\frac{y2-y1}{x2-x1}[/tex]

Where m is the slope and (x1,y1) and (x2,y2) are the two points. Substituting the two points given in the problem allows us to calculate the slope as:

[tex]m=\frac{7-1}{0-2} \\m= \frac{6}{-2} \\m= -3[/tex]

Next, we have to use the point-slope formula to find the equation for the line passing through these two points.

The point-slope formula states: (y-y1)=m(x-x1)

Where m is the slope and x1, and y1 are points from which the line passes.

Substituting the value of m and x1 and y1 in the given equation,

y-7=-3(x-0)

y-7= -3x-3*0

y-7+-3x

Solving for the slope-intercept form gives:

y-7+7= -3x+7

y-0 + -3x+7

y= -3x+7

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Hello,

I hope you and your family are doing well!

To find the length of BE, we can use the Pythagorean theorem to find the length of AC, and then use the fact that DE is parallel to AC to find the length of BE.

First, we use the Pythagorean theorem to find AC:

AC^2 = AD^2 + DC^2

Substituting the known values, we get:

AC^2 = 18^2 + 12^2

AC^2 = 324

AC = sqrt(324) = 18

Since DE is parallel to AC, we can set up a proportion to find the length of BE:

BE/EC = AC/DC

Substituting the known values, we get:

BE/12 = 18/12

BE = (18/12) * 12

BE = 18/1

BE = 18

Therefore, the length of BE is 18.

----

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Happy Holidays!

The expression that shows the number 8 in one's place will be 72.35 + 45.81 and 9.56 + 9.41. Then the correct options are B and C.

Algebra is the study of abstract symbols, while logic is the manipulation of all those ideas.

The expression that shows the number 8 in one's place.

Let's check all the options, then we have

A) 34.56 + 24.89 = 59.45

In the number 59.45, the one's place is 9. So, it is incorrect.

B) 72.35 + 45.81 = 118.16

In the number 118.16, the one's place is 8. So, it is correct.

C) 9.56 + 9.41 = 18.97

In the number 18.97, the one's place is 8. So, it is correct.

D) 12.34 + 15.42 = 27.76

In the number 27.76, the one's place is 7. So, it is incorrect.

The expression that shows the number 8 in one's place will be 72.35 + 45.81 and 9.56 + 9.41. Then the correct options are B and C.

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The given equation 11= - 4x^2-x^3 is not quadratic. It is a cubic.

The definition of a quadratic as a second-degree polynomial equation demands that at least one squared term must be included. It also goes by the name quadratic equations. The quadratic equation has the general form ax^2 + bx + c = 0. where a, b, and c are numerical coefficients and x is an unknown variable.

Quadratic expressions are those involving powers of x up to the second power, not the fourth power, hence the prefix quad signifies "four" rather than "two."

As highest power with the variable is 3 so it is a cubic expression not a quadratic.

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It will take 62.91 years for Kevin to make the amount  $2500 to  $7500 .

In the question ,

it is given that ,

the amount that Kevin deposited (P) in bank = $2500

the interest rate (r) = 1.75% ,

the compound interest is quarterly ,

So , n is = 4 .

let the time taken to earn $7500 be = x years ;

Substituting the values in the Amount formula for the Compound Interest ,

Amount = P(1 + r/n)ⁿˣ

7500 = 2500(1 + 0.0175/4[tex])^{4x}[/tex]

Simplifying further ,

we get ,

3 = (1.004375[tex])^{4x}[/tex]

After applying log both the sides ,

we get ,

log(3) = 4x*log(1.004375)

x = log(3)/(4*log(1.004375))

Simplifying further ,

we have ,

x = 62.91 years .

Therefore , the time taken is = 62.91 years

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Answer: y=-15/6x+6

Step-by-step explanation:

Find slope using slope equations y2-y1/x2-x1

16-(-14)/-4-8

30/-12

slope equals to -15/6

y=-15/6x+b

-14=-15/6(8)+b

b=6

y=-15/6x+6

dimensions of the poster with margin are L  =  12 in and h  = 24 in

The shape/polygon of a rectangle is two dimensional, having four sides, four vertices, and four right angles. The rectangle's two opposing sides are equal and parallel to one another. The space a rectangle occupies is known as its area. The area of a rectangle can also be defined as the region inside its border.

We utilise the unit squares to calculate a rectangle's area. Rectangle ABCD should be divided into unit squares. The total number of unit squares that make up a rectangle ABCD is its area.

Rectangle area equals length times width.

Let call length of printed area of the poster be " x "  and  height of printed area of the poster be " y ".

Area of the poster = length and height

200 = x*y  

y = 200/x

We also know that dimensions of the poster with margin is:

L  =  x + 2   in  and     H  =  y + 4 in

Therefore area of the poster is:

A(p)  = ( x + 2 ) * ( y + 4 )

And area as function of x is:

A(x)  =   ( x + 2 ) * ( 200/x + 4 )

A(x)  =  200 + 4*x + 400 /x  + 8

Taking derivatives on both sides of the equation we have:

A´(x)  =  4 - 400/x²

By taking A´(x)  = 0

4 - 400/x² = 0 ⇒ 4*x² - 400 = 0

x² = 400 / 4

x² = 100

x = 10 in

and y = 200/x ⇒ y = 20

The second derivative A´´(x) = 400/x4 which is > 0

there is a minimum for the function at the point x = 10

As x and y are dimensions of the printing area of the poster, dimensions of the poster with margin are

L  = x  +  2   =   10  + 2  =  12 in   and

h = y  +  4   =   20  + 4  =  24  in

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Answer: False

Step-by-step explanation:

The distance travelled from Buffalo to Cleveland if the total cost of the move is $724.85 is  479.97

The base cost of the rental is said to be 49.95 dollars + 1.19 per mile

The cost of the gas is $3.89. The mileage of the truck is 18 miles

There would be an extra cost of

$3.89/18 per mile.

= 0.216111

In x miles we would have the equation that is written as:

C(x) = 49.95 + (1.19 + 0.21611)x

C(X) = $724.85 this is the total cost. Hence we would have

$724.85 =  49.95 + 1.19x + 0.21611x

$724.85 -   49.95 = 1.40611x

674.9 = 1.40611x

divide through by 1.40611

674.9 / 1.40611 = x

x = 479.97

The distance traveled is  479.97

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The predicted strength of a weld with diameter of 51 is -503.16.

Given that diameter of weld is 51.

And we have to find predicted strength of a weld.

We know that the equation of predicted strength is,

strength = -941.6 + (8.598 × D)

where D id diameter = 51

⇒ strength = - 941.6 + (8.598 × 51)

   strength = -941.6 + 438.4

   strength = -503.2

Therefore predicted strength of a weld is -503.2 i.e option (b) -503.16.

A prediction equation predicts a value of the response variable for given values of the factors. The Delphi Survey technique is a popular method used in prediction. There are two types of prediction methods: qualitative and quantitative.

The Least square Regression Line is the line that makes the vertical distance from the data points to the regression line as small as possible. It is called a "least squares" because the best line of fit is one that minimizes the variance.

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To solve this problem, we can use the standard normal distribution and the Z-score formula to find the probability that a pregnancy will last at least 300 days.

The Z-score is a measure of how many standard deviations a value is from the mean. We can use the Z-score to standardize a value, which means we can express it in terms of how many standard deviations it is from the mean of the distribution.

The Z-score formula is:

Z = (x - μ) / σ

Where x is the value we are standardizing, μ is the mean of the distribution, and σ is the standard deviation of the distribution.

To find the probability that a pregnancy will last at least 300 days, we can use the Z-score formula to standardize 300 days:

Z = (300 - 268) / 15 = 4

This means that 300 days is 4 standard deviations above the mean of 268 days.

To find the probability that a pregnancy will last at least 300 days, we can use a Z-table or a calculator to find the area under the standard normal curve that is greater than or equal to 4 standard deviations.

Using a calculator or a Z-table, we find that the probability that a pregnancy will last at least 300 days is approximately 0.0165, which corresponds to answer choice D: 0.0165.

Inequality #1: x + y ≤ 28

Inequality #2: 0.05x + 0.1y ≥ 2

Mav could have 5 nickles and 20 dimes.

    It's given that Mav has less than or equal to 28 coins, so we can write the following inequality:

       x + y ≤ 28

    We know that a nickel is work 0.05 and a dime is worth 0.1. Using the given information, the following inequality is true since the coins must be greater than or equal to $2 combined:

       0.05x + 0.1y ≥ 2

       Now, we will graph them. Both graphed lines will use solid lines since both include equal to. We will shade below #1 and above #2. I used Desmos Graphing Calculator, you can find it online for free. Once we type in our equations, we get the needed graph.

       The overlapping portion contains our possible solutions. There are many, but one possible solution is (5, 20), with 5 nickels and 20 dimes.

(-9, 9) domain of the vector function. A vector valued function's domain is a subset of all real numbers at which the function is well-defined.

Consider the function y = f(x) to have an independent variable x and a dependent variable y. If a function f provides a way to successfully produce a single value y using a value for x, that chosen x-value is said to belong to f's domain.

A vector-valued function is a rule that gives each member of a subset of R1 a vector. A function's domain is the set of all possible inputs to the function. The domain of f(x)=x2 is all real numbers, for example, and the domain of g(x)=1/x is all real numbers except x=0.

r(t) = t − 1 t 1 i sin(t) j ln(81 − t2) k

Lets find the domain of  first which is given by,

t - 2 / t + 2

This function is defined at all values except, t equals to -2 as the function is not defined at,

t -= -2

Lets find the domain of  first which is given by,

sin(t),

Two trigonometry function sine and cosine defined for all real number

This function is defined at all real numbers. Hence the domain of component  j is.

Set the above argument greater than zero to find where the expression is defined.Thus,

(9 + t ) (9 - t) > 0

Therefore,

The domain of it should be (-9, 9)

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Answer:

See below

Step-by-step explanation:

This is the slope formula.  Do they give you two points?  If they give you two points like (2,3 ) and (5,7)  You subtract the y's over the subtraction of the x's

An ordered pair is in the form (x,y)  

So in the example that I give the y's are 7 and 3 and the x's are 5 and 2

[tex]\frac{7-3}{5-2}[/tex] = [tex]\frac{4}{3}[/tex]

I am thinking that they gave you two points and they want you to find the slope.

Answer:

Step-by-step explanation:

Ok so this is how to find slope of a line that passes through 2 points.

(x1,y1) and (x2,y2)

and to find the slope of the line (m) you have to do (y2-y1)/(x2-x1)

you just have to plug in the points

Answer:

Liter

Step-by-step explanation:

Milliliters are used for much smaller amounts of liquid.

Answer:

16 cookies

Step-by-step explanation:

24 cookies/1.5 cups= 16 cookies per 1 cup