I have no clue on how to do this

Answer:

The change was 32.8 degrees.

Step-by-step explanation:

Quite a lot. Very unusual.

-12.5 to 20.3

You need to add 12.5 just to get to 0. Then you add 20.3 to get the high temperature, So the answer is 12.5 + 20.3 = 32.8. That in centigrade would be a huge move. In Fahrenheit not so much but still pretty big.

Answer:

8 units = L

Step-by-step explanation:

The area of a rectangle is the product of length and width.

A = L*W

If A = 56 units^2 and W = 7 units, then L = (56 units^2) / (7 units) = 8 units = L

9514 1404 393

Answer:

  range

Step-by-step explanation:

An ordered pair is ...

  (element of domain, element of range)

Then the set of all "element of range" is the range.

_____

Additional comment

To understand math, it is helpful to understand the vocabulary of math. It is difficult to obtain any meaning from a communication when one doesn't know the language.

Answer:

Option D

Step-by-step explanation:

Convert to slope-intercept form:

\(4x-2y=2\)

\(-2y=2-4x\)

\(y=-1+2x\)

\(y=2x-1\)

Find the x-intercept by plugging in y=0:

\(y=2x-1\)

\(0=2x-1\)

\(1=2x\)

\(\frac{1}{2}=x\)

\(x=\frac{1}{2}\)

Therefore, the x-intercept is \((\frac{1}{2},0)\)

Find the y-intercept by plugging in x=0:

\(y=2x-1\)

\(y=2(0)-1\)

\(y=0-1\)

\(y=-1\)

Therefore, the y-intercept is \((0,-1)\)

So, the correct answer is option D.

Answer:

D

Step-by-step explanation:

1. To find the x intercepts, set y equal to 0 and solve for x

4x - 2y = 2

4x -2(0) = 2

4x - 0 = 2

4x = 2

x = 1/2

2. To find the y intercepts, set x equal to 0 and solve for y

4x - 2y = 2

4(0) - 2y = 2

0 - 2y = 2

-2y = 2

y = -1

Answer:

Graph A

Step-by-step explanation:

a. $3,000

b. < than 22 months

c. $3,222.72

From the quote that says "So, just think -- you can walk away with this $3,000 TV set for a little over one hundred dollars a month', we can deduce from it that the company original price for the TV is $3,000. Hence, Frank will need to pay $3,000 for the TV if he had money saved to pay for it today.

Monthly payment for the TV credit = $134

The Original TV cost = $3000.

The number of months to make monthly payments will be more than:

= $3,000 / $134

= 22.3880597015

= 22 months.

If we assume a rental period of 24 months, Frank would pay a total of:

= 24 month x $134.28

= $3,222.72

So, this is more than the cash price of $3,000.

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The equation of the line passing parallel to y = 4x+1 through the point (-2,-1) is y = 4x + 7.

The equation of a line passing through one point (P) and parallel to another line (L) can be written as:

(y - y1) = (m * (x - x1)),

where (x1, y1) is the point P, and m is the slope of the line L.

To find a line parallel to y =4x-1, because parallel lines have the same slope, the slopes will need to match.  

The slope of the parallel line is 4 because we know that y= mx + b, which means the old line's slope is 4.

The equation to find a line passing through one point (-2,-1) are:

y-y1 = m(x-x1)

y+1 = 4(x+2)

y+1 = 4x+8

y = 4x + 8 - 1

y = 4x + 7

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The slopes will need to match because parallel lines always have the same slope if we want to locate a line that is parallel to y = 4x-1.

The slopes will need to match because parallel lines always have the same slope if we want to locate a line that is parallel to y = 4x-1.

The slope of the parallel line is 4 because we know that y= mx+b, which means the old line's slope is 4.

The point slope form of a line can be used if we are aware of both the line's slope and a particular point.

y-y1 = m(x-x1) (x-x1)

y-5 = 4(x—3) (x—3)

y-5=4

(x+3)

Disperse the 4

y-5 = 4x+12

5 more on either side

y-5+5 = 4x+12+5

y = 4x+17.

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no sta espano!!!!!!!!!!!

Answer:

15 19/60

Step-by-step explanation:

-7 2/3 + (- 5 1/2) + 8 3/4 =

23/3 +(- 11/10) +35/4 =

LCM of 3,4 and 10 = 60

460/60 + (- 66/60) + 525/60 =

460+525= 985 - 66 = 919

919/ 60 = 15 19/60

It could be 270, -90 in degrees

or if you're in radians it would be 3/2 pi or -1/2 pi

Answer:

a) 1 : 3 and 1 : 27. b) 1728 inches³

Step-by-step explanation:

a) if ratio of areas is 1:9, then the ratio of lengths is √1 : √9 = 1:3

ratio of volumes is 1³ : 3³ = 1 : 27

b) volume of smaller = 64.

ratio of volumes = 1 : 27

volume of larger sphere = 27 X 64 = 1728 (inches³)

Answer:

y= 1 1/2x-1/2

Step-by-step explanation:

Answer:

15 in²

Step-by-step explanation:

Area of triangle= ½ ×base ×perpendicular height

The base is 5 in, and the perpendicular height is 6 in.

Area of triangle

= ½(5)(6)

= ½(30)

= 15 in²

The required area of the parallelogram and pentagon is 91 unit² and 75 unit².

The surface area of any shape is the area of the shape that is faced or the Surface area is the amount of area covering the exterior of a 3D shape.

A parallelogram in is shown in figure 1 with the dimensions height = 7 and base = 13,
Area of the parallelogram  = 13 × 7 = 91 unit²

Now,
A pentagon is shown in figure 2,
Area of the pentagon = 5 [1/2 × height × side]
                                 = 5 [1/2 × 5 × 6]

                                 = 75 suqare units.

Thus, the required area of the parallelogram and pentagon is 91 unit² and 75 unit².

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The statement cross-tabulation with two variables is known as twice-tabulation is false because there is no such term as "twice-tabulation" in the context of statistical analysis.

Cross-tabulation, also known as contingency table analysis, involves the analysis of categorical variables by creating a table that shows the frequency or distribution of one variable based on the levels of another variable.

It allows for the examination of the relationship between two variables, highlighting any associations or patterns that may exist. Each cell in the cross-tabulation table represents the count or proportion of observations that fall into specific combinations of categories from the two variables.

The term "twice-tabulation" does not exist in statistical literature and is not commonly used to refer to cross-tabulation with two variables. The correct term to describe this statistical technique is simply cross-tabulation or contingency table analysis.

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The study is most likely attempting to establish is Criterion validity and the study featured a(n) scale of measurement is Ordinal scale.

10). The study is most likely attempting to establish is: By criterion validity.

Criterion validity measures how well one measure predicts the outcome for another measure.

Here, we are judging how well the scores on the employment test predict the performance of the person.

Nominal Scale: This scale is used to assign labels to variables that have no numerical values.

For eg : Gender (male and female) , colour (brown blue black white)

Ordinal scale: It matters how the values are arranged, but it makes no difference how much they differ.

For eg: 1: Food applications rated from 1 to 5, 5 being the best. If a app is rated as 2 and other is rated as 4 does not mean the later is twice as good as the first.

Interval scale: An interval scale is a numerical scale where the order and size of the difference between the numbers are known. Absolute zero does not indicate absence in an interval scale, it only means there is no value.

For eg: Temperature in degree Celsius. If T1=5o Celsius  and T2=15o Celsius this means is a temperature difference of 10o , but with T3=0o does not mean there is no temperature.

Ratio scale: The ratio scale is another numerical scale where the order and size of the difference between the values are known, and where absolute zero denotes the absence of values.

For eg: Salary of people

11). The study featured a(n)scale of measurement is: By ordinal scale

We will rank the chairs on a scale where order counts and the size of the difference is not particularly significant.

Hence, for 10th the option A is correct and for 11th the option B is correct.

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Answer:

x = 11/2

Step-by-step explanation:

X-intercept(s) can be found when y = 0

Rearrange the equation

-3y = -2x + 11

y = 2x/3 - 11/3

Let y = 0

0 = 2x/3 - 11/3

Rearrange so that x is on one side

2x/3 = 11/3

x = 11/2

Answer:

5.5

Step-by-step explanation:

The x-intercept of a function is the value of x when y is equal to 0.

Therefore, we can just plug in 0 for y and solve for x:

2x-3(0)=11

2x=11

x=5.5

The x-intercept is 5.5

Answer:   \(\left[\begin{array}{ccc}11&13&3\\1&9&17\\15&5&7\end{array}\right]\)

Step-by-step explanation:

A magic cube is something like:

\(\left[\begin{array}{ccc}1&2&3\\4&5&6\\7&8&9\end{array}\right]\)

Where the numbers that we must use are:

1, 3, 5, 7, 9, 11, 13, 15, 17

If we take the addition of those 9 numbers, we get 81.

Now, we divide it by 3 (the number of numbers in each row or column) and get:

81/3 = 27

so the sum in each row, column and diagonal must be 27.

1 + 9 + 17 = 27

13 + 11 + 3 = 27

5 + 7 + 15 = 27

9 + 13 + 5 = 27

You can keep playing with this, and then start forming our number cube, some of the hints tat we can use is that the median of the group is 9, so it must be in the middle of the cuve, and the extremes, 1 and 17, must be in the same column or row as 9.

so we start with:

\(\left[\begin{array}{ccc}x&x&x\\1&9&17\\x&x&x\end{array}\right]\)

and start to fill the empty spaces, now we can use that

1 + 11 + 15 = 27 and get:

\(\left[\begin{array}{ccc}11&x&x\\1&9&17\\15&x&x\end{array}\right]\)

now for the diagonals:

11 + 9 + 7 = 27

15 + 9 + 3 = 27

\(\left[\begin{array}{ccc}11&x&3\\1&9&17\\15&x&7\end{array}\right]\)

and for the last one:

11 + 3 + 13 = 27

15 + 7 + 5 = 27

\(\left[\begin{array}{ccc}11&13&3\\1&9&17\\15&5&7\end{array}\right]\)

Investment grade properties are considered to be lower-risk investments, which is why they are so popular among industry professionals seeking long-term, stable returns.

The classifications of properties that are commonly examined by the Real Estate Research Corporation (RERC) are referred to as investment grade properties. They are characterized as being large, relatively new, located in major metropolitan areas and fully or substantially leased. These properties are sought after by institutional investors and managers as they are relatively stable investments that generate reliable and consistent income streams.

Additionally, because they are located in major metropolitan areas, they typically benefit from high levels of economic activity and have strong tenant demand, which further contributes to their stability. Overall, investment grade properties are considered to be lower-risk investments, which is why they are so popular among industry professionals seeking long-term, stable returns.

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Answer:

36

Step-by-step explanation:

She gets 6 question right for every 8 question that means a ratio of 6/8 which is equal to 3/4

so we can say the ratio multiplied by the number of questions equals the correct answers

while x is the number of questions:

solve for x

3/4 * x = 27

x = 27 / (2/3) = 36

In a normal distribution of the exam scores, with a mean of 19.2 and a standard deviation of 5.1, the probability that a randomly chosen student from all those taking the test scores 23 or higher is 0.2266 or 22.66%.

Normal distribution refers to a continuous probability distribution where most of the data values lie in a symmetrical fashion mostly centered around the mean. In order to determine probability of an event, the results converted into standard score which refers to the number of standard deviations by which the value of a raw score is above or below the mean value of what is being observed or measured.

The probability that a randomly chosen student from all those taking the test scores 23 or higher is given by P (x ≥ 23)

Standardizing the 23 to determine z:

z = (x - µ)/ σ = (23 – 19.2)/5.1 = 0.745

From the normal probability table, the probability is:

P (x ≥ 23) = P (z P (z ≥ 0.745) = 0.2266

Hence, the probability that a randomly chosen student from all those taking the test scores 23 or higher is 0.2266 or 22.66%.

Note: The question is incomplete. The complete question is: The scores of students on the ACT college entrance exam in 2001 had a mean of 19.2 and a standard deviation of 5.1. The distribution of scores is only roughly normal. What is the approximate probability that a randomly chosen student from all those taking the test scores 23 or higher?

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The angle between the two vectors is approximately 125 degrees and 32 minutes.

(a) To find the dot product of the two vectors (5, -8) and (-3, 4), we use the formula for the dot product: Dot product = (5 * -3) + (-8 * 4), Dot product = -15 - 32, Dot product = -47. Therefore, the dot product of the two vectors is -47. (b) To find the angle between the two vectors, we can use the formula for the dot product and the magnitudes of the vectors: Dot product = ||a|| * ||b|| * cos(theta). In this case, vector a = (5, -8) and vector b = (-3, 4).

The magnitude of vector a (||a||) is calculated as: ||a|| = √(5^2 + (-8)^2) = √(25 + 64) = √89. The magnitude of vector b (||b||) is calculated as: ||b|| = √((-3)^2 + 4^2) = √(9 + 16) = √25 = 5. Substituting these values into the dot product formula, we have: -47 = √89 * 5 * cos(theta). To find the angle theta, we rearrange the equation: cos(theta) = -47 / (5 * √89). Using a calculator, we can evaluate this expression: cos(theta) ≈ -0.532

To find the angle theta, we take the inverse cosine (arccos) of this value: theta ≈ arccos(-0.532). Using a calculator, we find: theta ≈ 125.53 degrees. Rounding to the nearest minute, the angle between the two vectors is approximately 125 degrees and 32 minutes.

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The inflection points of the given function are at x = 0 only. The answer is D.

To find the inflection points of the given function, we need to find the second derivative of the function and set it equal to zero.

y = 5x^4 - x^5

y' = 20x^3 - 5x^4

y'' = 60x^2 - 20x^3

Setting y'' = 0, we get:

60x^2 - 20x^3 = 0

20x^2(3 - x) = 0

x = 0 or x = 3

Now, we need to determine whether these values of x correspond to inflection points. To do this, we can examine the sign of the second derivative in the intervals around each value of x.

For x < 0, y'' is positive (since both terms are positive), so there is a local minimum at x = -3.

For 0 < x < 3, y'' is negative (since 60x^2 < 20x^3), so there is a point of inflection at x = 0.

For x > 3, y'' is positive (since both terms are positive), so there is a local minimum at x = 3.

Therefore, the inflection points of the given function are at x = 0 only. The answer is D.

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Step-by-step explanation:

look at the photo...............

Given, the height \($h=6$, the base $b_1=9$ and $b_2=12$.\)

The area of the trapezoid is given by the formula,

\(\[A = \frac{1}{2}h(b_1+b_2)\]\)

Substitute the given values,  

\(\[A = \frac{1}{2} \times 6 \times (9+12)\]\\\)

Simplifying the above expression,

\(\[A = 45 \text{ square feet}\]\)

Therefore, the area of the trapezoid is $45$ square feet.

The perimeter of a two-dimensional geometric shape is the entire length of the boundary or outer edge. It is the sum of the lengths of all the shape's sides or edges.

The perimeter of a square, for example, is calculated by adding the lengths of all four sides of the square.

Similarly, to find the perimeter of a rectangle, sum the lengths of two adjacent sides and then double the result because there are two pairs of adjacent sides.

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Answer:

8.37 cm rounded

Step-by-step explanation:

C = 2π r

C = 2π (8)

C = 16 π

C = 50.24

1/6 ( 50.24)= 8.37

The solution to the problem is as follows:Given that 80% of teenagers aged 12-17 own smartphones. A random sample of 250 teenagers is drawn.

The probability is calculated by using the Central Limit Theorem and the TI-84 calculator, and the answer is rounded to at least four decimal places.PC <0.11)-0 Х $P(X<0.11)To find the probability of less than 75% of the sampled teenagers owned smartphones, convert the percentage to a proportion.75/100 = 0.75

This means that p = 0.75. To find the sample proportion, use the given formula:p = x/nwhere x is the number of teenagers who own smartphones and n is the sample size.Substituting the values into the formula, we get;$$p = \frac{x}{n}$$$$0.8 = \frac{x}{250}$$$$x = 250 × 0.8$$$$x = 200$$Therefore, the sample proportion is 200/250 = 0.8.To find the probability of less than 75% of the sampled teenagers owned smartphones, we use the standard normal distribution formula, which is:Z = (X - μ)/σwhere X is the random variable, μ is the mean, and σ is the standard deviation.

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According to the given data we have the following proportion:

8hours/10 workers = Xhours/15 workers

A) The above proportion is not appropiate for solving the problem.

Since, the relationship between the number of workers and the time taken for sewing is an inverse relation:

The above proportion is just a direcly proportional relation.

B). As I stated above the relationship between the number of workers and the time taken for sewing is an inverse relation, hence, if the number of workers doubles then the number of time taken reduces to half.

So, since 15=10*15/10

therefore, time taken for 15 workers to sew pants is:

8/ 15/10 = 8* 10/15

=5 1/3 hours.

The time taken for 15 workers to sew pants is 5 1/3 hours.