pls help! show work! ​

Answer:

multiply all of them then add all of them then divide by the lowest number

12:1 is the scale factor

3.5 ÷ 3.5 = 1 and 142 ÷ 3.5 =123.5 so 42:123.5 ratio simplified is 12:1

Looking at the question, to find the scale factor we are going to divide 42 by 3.5 which is 12. To check our work we will do 1 times 3.5 which is 42.

Why is it not 147:1? Well, scale factoring means that in two similar geometric figures, the scale factor is the ratio of their corresponding sides, dividing the two corresponding lengths of the sides will gives the ratio

To check go to:

https://www.ginifab.com/feeds/cm_to_inch/scale_factor_calculator.html

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Please remember to revise this and make it in your own words if you want! I hope this helps you. -Doodle

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That the gradient gives the direction of steepest ascent, so the negative of the gradient gives the direction of steepest descent.

To find the slope of the tangent in the positive y-direction to the surface z = 3x + 2y − 4exy at (6, 0, 14), we need to find the partial derivative of z with respect to y and evaluate it at the point (6,0):

∂z/∂y = 2 - 4ex(6)

At (6,0), this becomes:

∂z/∂y = 2 - 4e(36) = -646.158

So the slope of the tangent in the positive y-direction at (6,0,14) is -646.158.

To find the following for z = x2 + 5x − 3y3:

a) The partial derivative of z with respect to x:

∂z/∂x = 2x + 5

b) The partial derivative of z with respect to y:

∂z/∂y = -9y2

c) The gradient of z:

∇z = (2x + 5)i - 9y2j

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The area of the figure is approximately 86.325 square centimeters.

A triangle is a shape with three sides and three angles. It is one of the basic shapes in geometry. Triangles can be classified according to the lengths of their sides as equilateral, isosceles and scalene triangles, and also according to their internal angles as right, acute and obtuse triangles.

To find the area of the trapezoid triangle , we need to first find the length of the other diagonal

Since the center line is perpendicular to both diagonals, it divides the trapezoid triangle into two right triangles, ABC and ABD.

Using the Pythagorean theorem, we can find the length of BD:

BD = [tex]\sqrt{(AB^2 + AD^2)}[/tex]

BD = [tex]\sqrt{(10.2^2 + 7.5^2)}[/tex]

BD = 12.654

Now, we can use the formula for the area of a trapezoid:

A = (1/2) * (AB + CD) * h

where h is the height of the trapezoid, which is the distance between the parallel sides AB and CD.

To find h, we can use the formula for the area of a triangle:

A = (1/2) * b * h

where b is the base of the triangle and h is its height.

We can use triangle ABD, which is a right triangle, to find the height h:

h = AD = 7.5

Now we can substitute the values into the formula for the area of a trapezoid:

A = (1/2) * (AB + CD) * h

A = (1/2) * (10.2 + 15.3) * 7.5

A = 86.325

Therefore, the area of the trapezoid triangle ABC is approximately 86.325 square centimeters.

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The circumference of the circle is 150.768 units.

The area of the circle is 1809.216 units squared.

The area and circumference of a circle can be found as follows:

Let's find the circumference of the circle as follows:

circumference of a circle =  2πr

where

Therefore,

circumference of a circle = 2πr

r = 24 units

π = 3.141

Hence,

circumference of the circle = 2 × 3.141 × 24

circumference of the circle =  150.768 units

Let's find the area of the circle as follows:

area of the circle = πr²

area of the circle = 3.141 × 24²

area of the circle = 1809.216 units squared

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The simple rate of return for the investment (rounded to the nearest tenth of a percent) is: 0.1572 or 15.7%.

Simple rate of return is a financial metric used to measure the profitability of an investment, calculated as the ratio of net income to the initial investment.

To calculate the simple rate of return for the investment, we need to first calculate the average annual net cash inflow.

Annual net cash inflow = Annual cash inflows - Annual depreciation expense

The annual depreciation expense can be calculated as:

Depreciation expense = (Initial cost - Salvage value) / Life of investment

Depreciation expense = ($34,000 - $0) / 15 years = $2,266.67 per year

Therefore, the average annual net cash inflow is:

Annual net cash inflow = $7,600 - $2,266.67 = $5,333.33

The simple rate of return can now be calculated as:

Simple rate of return = Average annual net cash inflow / Initial investment

Simple rate of return = $5,333.33 / $34,000 = 0.1572 or 15.7% (rounded to the nearest tenth of a percent)

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Answer:

One example of an irrational number between 5.25 and 5.26 is:

√139 ≈ 11.78982612...

Since the decimal representation of √139 goes on forever without repeating, it is an irrational number.

Step-by-step explanation:

To estimate how many Boomers prefer to shop in-store, we can use the percentage given and apply it to the sample size of 75 people.

84% of 75 = 0.84 x 75 = 63

Therefore, we can estimate that approximately 63 Boomers out of a sample size of 75 prefer to shop in-store.

To represent this data visually, we can create a simple bar graph. The x-axis can represent the different generations and the y-axis can represent the percentage of people who prefer to shop in-store. We can then plot the data for Boomers as a bar that reaches 84% on the y-axis.

Answer:

Step-by-step explanation:

Without the graph or any additional information, it is not possible to determine the formula for the quadratic function f(x). The graph provides visual information about the shape and characteristics of the function, but not enough details to determine the exact coefficients of the quadratic expression.

To find the formula for a quadratic function, we need to know three coefficients: a, b, and c. These coefficients are determined by the specific shape and features of the graph, such as the vertex, intercepts, and symmetry.

If you can provide more information about the graph, such as the coordinates of some key points or any additional characteristics, I can help you find the formula for the quadratic function f(x).

Answer:

405$

Step-by-step explanation:

First we need to find out what is the price of one unit:

330 units - 495$

1 unit - x $

Use the property of proportion to find x:

x = 1 × 495 / 330 = 1,5$ (for one unit)

Then multiply this price by 270 (since it's the new quantity of units):

270 × 1,5 = 405$

Step-by-step explanation:

To calculate the amount of wood needed to create a raised bed, you will need to know the dimensions of the bed.

Assuming the raised bed is rectangular, you will need to know the length and width of the bed, as well as the height of the bed.

Once you have these dimensions, you can calculate the surface area of the raised bed by multiplying the length and width of the bed together. This will give you the area of the bottom of the bed.

To calculate the total surface area of the bed, including the sides, you will need to multiply this area by 2 (since there are two sides) and add this to the area of the bottom.

So the formula for calculating the total surface area of the raised bed is:

Total surface area = (2 x length x height) + (2 x width x height) + (length x width)

Once you have this total surface area, you can then calculate how much wood you need by multiplying it by the thickness of the wood.

For example, if the total surface area of the bed is 100 square feet and you plan to use 2-inch-thick boards, you would need 200 cubic feet of wood.

It's worth noting that this calculation assumes that the raised bed has straight sides and right angles. If the bed has a more complex shape, the calculation will be more difficult.

Answer:

C

Step-by-step explanation:

Answer:

A

Step-by-step explanation:

The difference of –3.2 and the sum of a number and 19.1 is given as:

|-3.2 - (x + 19.1)| ≤ 14.2

Simplifying the left side of the inequality:

|-22.3 - x| ≤ 14.2

The absolute value of a number is always greater than or equal to 0, so we can split the inequality into two cases:

Case 1: -22.3 - x ≤ 14.2

-36.5 ≤ x

Case 2: -22.3 - x ≥ -14.2

-8.1 ≥ x

Combining the two cases, we get:

-36.5 ≤ x ≤ -8.1

Therefore, the correct option is:

A: Negative 3.2 minus (x + 19.1) less-than-or-equal-to 14.2.

Answer idek

Step-by-step explanation: why

The fοrmula fοr the circumference (C) οf a circle with radius (r) is C = 2πr.

The perimeter οf a circle οr ellipse is its circumference. That is, if the circle were οpened up and straightened οut tο a line segment, the circumference wοuld be the length οf the arc.

The equatiοn C/d = π relates the circumference (C) οf a circle tο its diameter (d) using the cοnstant pi (π).

we can use the relatiοnship between the diameter and the radius:

d = 2r

We can substitute 2r fοr d in the equatiοn C/d = π, giving us:

C/(2r) = π

We can then multiply bοth sides by 2r tο isοlate C:

C = 2πr

Therefοre, the fοrmula fοr the circumference (C) οf a circle with radius (r) is C = 2πr.

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Answer: We can start by noticing that the total number of small cubes used is 64, which is the same as the total number of unit squares on the surface of the large cube. To maximize the white surface area, we want to arrange the cubes in a way that maximizes the number of white faces on the surface.

Each small cube has 6 faces, so there are a total of 6 x 64 = 384 faces. Half of these faces are white and half are black, since we have an equal number of white and black cubes. Therefore, there are 192 white faces and 192 black faces.

Now, let's consider how the small cubes can be arranged to maximize the white surface area. If we arrange all the white cubes together in a 4 x 4 x 4 block, then all the faces of this block that are adjacent to a black cube will be black, and all the faces that are adjacent to another white cube will not contribute to the surface area. This leaves only 16 white faces that contribute to the surface area.

On the other hand, if we alternate white and black cubes in each layer of the cube, then all the faces that are adjacent to a black cube will be white, and all the faces that are adjacent to another white cube will be black. This maximizes the white surface area. Specifically, there are 6 layers of the cube, and each layer has 16 white faces (4 along the top and bottom and 4 along each side). Therefore, there are a total of 6 x 16 = 96 white faces that contribute to the surface area.

So the fraction of the surface that is white is:

96 white faces / 384 total faces = 1/4

Therefore, one quarter of the surface area of the cube is white.

Step-by-step explanation:

The end behavior of the function f(x) = -1/x - 4 is given as follows:

As x -> ∞, f(x) -> -4.

The end behavior of a function refers to the behavior of the function as the input variable (usually denoted as "x") approaches positive or negative infinity. To obtain the end behavior of a function, we look at the highest degree term in the function, which will determine the general shape of the graph.

The function for this problem is defined as follows:

f(x) = -1/x - 4.

As x goes to infinity, the term 1/x goes to zero, hence the end behavior of the function is defined as follows:

f(x) = 0 - 4

f(x) = 4.

The problem is incomplete, hence I found the end behavior of the function f(x) = -1/x - 4.

You should use the same procedure to find the end behavior of the function in your problem.

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Answer:

Step-by-step explanation:

To simplify the expression 24 + b/b + 24 x 53.72,

we first need to substitute the given value of b into the expression.

For example, if b is equal to 5, we can replace all instances of b with 5 to get 24 + 5/5 + 24 x 53.72.

Next, we can simplify the division by evaluating 5/5, which equals 1.

Then, we can multiply 24 and 53.72 to get a product of 1288.28.

Finally, we can add the simplified terms to get a final result of 1312.28.

Therefore, the simplified expression, given that b is equal to 5, is 1312.28.

Answer:

Step-by-step explanation:

its 10.7

1x1 *why is that ok  ut number

The expression that represents the product of t and 9 is 9t

The product of t and 9 can be represented by the following expressions:

All three of these expressions represent the same thing: the result of multiplying t and 9 together.

The expression "t * 9" uses the multiplication operator (*) to indicate that t and 9 are being multiplied.

The expression "9 * t" is equivalent, as multiplication is commutative and the order of the factors doesn't affect the result.

The expression "9t" is a shorthand way of writing the product, using the distributive property of multiplication.

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(a) OIne critical number that is x = 1

(b) Function is decreasing on the interval (-∞,1) and increasing on the interval (1,∞).

(c) at x = 1, this critical number corresponds to a relative minimum.

(d) The graph is given in the attachment.

The rate change of the function at a specific point

a) The values of x where the derivative of the function equals zero or does not exist.

f'(x) = -4x + 4

Setting f'(x) equal to zero gives:

-4x + 4 = 0

-4x = -4

x = 1

So the critical number is x = 1.

(b) we need to examine the sign of the derivative on either side of the critical number.

When x < 1, f'(x) is negative, indicating that the function is decreasing.

When x > 1, f'(x) is positive, indicating that the function is increasing.

Therefore, the function is decreasing on the interval (-∞,1) and increasing on the interval (1,∞).

(c) all relative extrema, we examine the sign of the derivative in the neighborhood of the critical number x = 1. Since f'(x) changes sign at x = 1, this critical number corresponds to a relative minimum.

(d) The graph is given in the attachment.

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Answer:

The formula gives the area of a parallelogram:

Area = base x height

Substituting the given values, we get:

Area = 7.5 cm x 12.2 cm

Area = 91.5 cm^2

Therefore, the area of the parallelogram is 91.5 square centimeters.

Step-by-step explanation:

Answer:

91.5 sq cm

Step-by-step explanation:

A=bh=7.5·12.2=91.5

The linear function that represents the above scenario is given as follows:

y = 6 + 2.5x.

The number of days needed to run 41 miles is given as follows:

14 days.

The slope-intercept representation of a linear function is given by the equation presented as follows:

y = mx + b

The coefficients of the function and their meaning are described as follows:

The parameters in the context of the problem have the values given as follows:

Hence the function is modeled as follows:

y = 2.5x + 6.

The number of days needed to run 41 miles is given as follows:

2.5x + 6 = 41

x = 35/2.5

x = 14 days.

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Answer:

$3,280.72

Step-by-step explanation:

300(1 + [tex]\frac{.08}{12}) ^{(12x30)}[/tex] = 3280.72

Helping in the name of Jesus.

The product of  -4a and 3a-2b+4c is calculated as: -12a²+8ab-16ac.

Sums of terms of the form kxn, where k is any quantity as well as n is a positive integer, make up polynomials. For instance, the polynomial 3x+2x-5. a description of polynomials.

Have used FOIL method, Box method, and distributive property, multiply two polynomials. To multiply polynomials, you can employ one of three methods.

The polynomial's zeros must be located using a method of your choice, and the linear expression that produce those zeros must then be combined in order to describe the polynomial like a product of linear factors. After factoring, you will have to filter through the third degree polynomial.

The given polynomials are-

-4a and 3a-2b+4c

Formulation of rectangular array:

                  3a          -2b          4c

-4a  :     -4a*3a      -4a*(-2b)   -4a*(4c)

                -12a²         8ab           -16ac.

Thus, the product of  -4a and 3a-2b+4c is calculated as: -12a²+8ab-16ac.

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Answer:

x ≤ 4

Step-by-step explanation:

5x-12 ≤3x-4

collect like terms

5x - 3x ≤ -4 + 12

2x ≤ 8

2x/2 ≤ 8/2

x ≤ 4

Answer:

x [tex]\leq[/tex] 4

Step-by-step explanation:

5x - 12 [tex]\leq[/tex] 3x - 4  Subtract 3x from both sides

2x - 12 [tex]\leq[/tex] -4  Add 12 to both sides

2x [tex]\leq[/tex] 8  Divide both sides by 2

x [tex]\leq[/tex] 4

Helping in the name of Jesus.

The function S (m) = 105m represents the amount of steps after m minutes.

What is a function?

A mathematical phrase, rule, or law that establishes the link between an independent variable and a dependent variable (the dependent variable) is known as a function.

We are given two functions.

Tim's function : S (m) = [tex]105^{m}[/tex]

This function cannot be used to find the amount of steps taken after m minutes.

Each minute, they take an additional 105 steps. Equal differences represent a linear relationship.

Kristin's function: S (m) = 105m

This function can be used to find the amount of steps taken after m minutes.

For every minute that passes, 105 more steps are take.

Hence, the function S (m) = 105m represents the amount of steps after m minutes.

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By using scale and prοpοrtiοn, the dimensiοns οf the actual painting are 144 inches² by 216 inches².

Scale refers tο the relatiοnship between the dimensiοns οf a scaled οbject and the cοrrespοnding dimensiοns οf the οriginal οbject. If an οbject is scaled dοwn tο half its οriginal size, then the dimensiοns οf the scaled οbject will be half οf the dimensiοns οf the οriginal οbject.

Prοpοrtiοn, οn the οther hand, refers tο the relatiοnship between twο οr mοre quantities that have the same ratiο. In οther wοrds, if twο quantities are in prοpοrtiοn, then their ratiο is cοnstant.

Tο find the dimensiοns οf the actual painting, we need tο "undο" the 6:1 scale.

If the scaled painting is 6 times smaller than the actual painting, then the actual painting is 6 times larger than the scaled painting.

Sο we can find the actual dimensiοns by multiplying the scaled dimensiοns by 6:

Actual width = 24 inches x 6 = 144 inches

Actual height = 36 inches x 6 = 216 inches

Therefοre, the dimensiοns οf the actual painting are 144 inches² by 216 inches².

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Answer:

Download 15 songs cost £22.50

Download 45 songs cost £67.50

Step-by-step explanation:

We know

Downloading 30 songs from a music website costs £45.

45 / 30 = £1.5 for 1 song

Download 1 song = £1.50

How much does it cost to download 15 songs?

1.5 x 15 = £22.50

How much does it cost to download 45 songs?

1.5 x 45 = £67.50

So,

Download 15 songs cost £22.50

Download 45 songs cost £67.50

No, Kiran is incorrect. -2 is actually greater than -5, so the correct statement is -5 < -2.

A number line is an image of numbers plotted on a straight line, either horizontally or vertically. We can compare numbers and execute simple arithmetic operations on them easily by writing the numbers down on a number line. The starting point of a number line is often regarded as zero (0). The numbers to the left of zero are all negative whereas the numbers on the right of zero are all positive. As a result, we may argue that on a number line, the value of numbers grows as we approach towards the right. The numbers on the right are thus greater than the ones on the left, according to this statement.

No, Kiran is incorrect. -2 is actually greater than -5, so the correct statement is -5 < -2.

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Answer:

Amount of benzoic acid in the solvent phase = 0.303 kg/L * 100 L/min * 20 min = 606 g.

Step-by-step explanation:

To determine the amount of benzoic acid that has passed into the solvent phase after 20 minutes, we need to use the given simplifications to set up a mass balance equation.

Let's express the stream-flow rates on a solute-free basis, which means that we consider only the flow rate of the solvent (water) and the flow rate of the toluene (ignoring the mass of benzoic acid in each stream). Let Fw be the flow rate of water and Ft be the flow rate of toluene.

Since the toluene and water are immiscible, we can assume that the volume of the two phases leaving the tank is the same as the volume of the mixture entering the tank (which is 100 L/min). Let V be this volume, which is also equal to the volume of the tank (120 L).

Let x be the concentration of benzoic acid leaving the stage in the organic phase (i.e., the solvent phase), and y be the mass concentration of benzoic acid in the aqueous phase.

From the given simplification, we have:

y = 5x

Let's use the mass balance equation to relate the flow rate of benzoic acid entering the tank to the flow rate of benzoic acid leaving the tank:

FtCt,in = VxCt,out + (FwCw,in - Fw*Cw,out)*y

where Ct,in and Cw,in are the concentrations of benzoic acid in the toluene and water entering the tank, respectively, and Ct,out and Cw,out are the concentrations of benzoic acid in the toluene and water leaving the tank, respectively.

We can assume that the feed concentration is constant, so Ct,in = 0.12 kg/L. We also know that the flow rate of the toluene and water entering the tank are 100 L/min and 110 L/min, respectively.

The concentration of benzoic acid in the water leaving the tank is given by:

Cw,out = y/5 = x/5

Since the flow rate of each phase is steady, we can assume that the concentration of benzoic acid in the toluene leaving the tank is the same as the concentration of benzoic acid in the toluene entering the tank, which is also 0.12 kg/L.

Substituting these values into the mass balance equation, we get:

1000.12 = 120x*0.12 + (110 - 120)*y

Simplifying, we get:

12 = 14.6x + 10y

Substituting y = 5x, we get:

12 = 39.6x

x = 0.303 kg/L

Therefore, the concentration of benzoic acid leaving the tank in the organic phase is 0.303 kg/L.

To find the amount of benzoic acid that has passed into the solvent phase after 20 minutes, we need to multiply the concentration by the flow rate of the toluene:

Amount of benzoic acid in the solvent phase = 0.303 kg/L * 100 L/min * 20 min = 606 g.

We can use the mass balance equation to solve this problem. Let x be the concentration of benzoic acid leaving the stage in the organic phase (in kg/L) and y be the concentration of benzoic acid in the aqueous phase (in kg/L). Then we have:

Mass of benzoic acid entering the stage per minute = Mass of benzoic acid leaving the stage per minute

The mass of benzoic acid entering the stage per minute is:

100 L/min x 0.12 kg/L = 12 kg/min

The mass of benzoic acid leaving the stage per minute can be expressed in terms of x and y as:

100 L/min x (0.12 kg/L - x) + 110 L/min x y = (100 + 110) L/min x m x x

Simplifying and using the given linear relationship between y and x, we get:

12 - 100x + 110(5x) = 210x

Solving for x, we get:

x = 0.034 kg/L

Therefore, the concentration of benzoic acid in the organic phase after 20 minutes is 0.034 kg/L.