x^2+7x-9 + 2x-1 what is the polynomial and degree

Answer:

A=60

B=27

Step-by-step explanation:

The solution of Unit Problem is Solution of first part is As the contribution margin is positive, accepting the special sales order would be profitable for Hobby-Cardz,and second part is  total profit is negative

Contribution margin is the difference between a product's revenue and its variable costs. It represents the amount of money that is available to cover fixed costs and contribute to profit.

1)Incremental Analysis without special order:

Revenue from 51,000 packs at $0.43 per pack = $21,930

Total variable costs for 51,000 packs = 51,000 x $0.33 = $16,830

Contribution margin = $21,930 - $16,830 = $5,100

As the contribution margin is positive, accepting the special sales order would be profitable for Hobby-Cardz.

2)Incremental Analysis with special hologram baseball cards:

In addition to the incremental analysis performed in Part 1, we need to consider the additional cost of $5,300 to develop the hologram.

Revenue from 51,000 packs at $0.43 per pack = $21,930

Total variable costs for 51,000 packs = 51,000 x $0.33 = $16,830

Contribution margin = $21,930 - $16,830 = $5,100

Less: Additional cost of hologram development = $5,300

Total profit/loss = $5,100 - $5,300 = ($200)

As the total profit is negative, accepting the special sales order with the hologram development cost would result in a loss of $200. Therefore, Hobby-Cardz should not accept the special order under these circumstances.

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Answer:

The dimensions of the rectangle are approximately 8.54 units by 3.54 units.

Step-by-step explanation:

Let's start by using algebra to represent the information given in the problem.

Let L be the length of the rectangle.

Then, the width of the rectangle is 5 units less than the length, which means the width can be expressed as L - 5.

The area of a rectangle is given by the formula A = L * W, where A is the area, L is the length, and W is the width. In this case, we are given that the area is 36 square units. So we can write:

A = L * (L - 5)

36 = L * (L - 5)

Expanding the right-hand side of the equation, we get:

36 = L^2 - 5L

Moving all the terms to the left-hand side of the equation, we get:

L^2 - 5L - 36 = 0

Now we can use the quadratic formula to solve for L:

L = (-(-5) ± sqrt((-5)^2 - 4(1)(-36))) / (2(1))

Simplifying this expression, we get:

L = (5 ± sqrt(229)) / 2

We can discard the negative solution since the length of a rectangle cannot be negative.

So, the length of the rectangle is approximately 8.54 units (rounded to two decimal places).

To find the width, we can substitute this value of L into the expression we derived earlier for the width:

W = L - 5

W = 8.54 - 5

W ≈ 3.54 units (rounded to two decimal places)

Therefore, the dimensions of the rectangle are approximately 8.54 units by 3.54 units.

The derivative of the function y =  ((2x - 1)³)/√(3x + 1)​ is dy/dx = (2x - 1)²[3x + 6]/(2[√(3x + 1)]³)

The derivative of a function is the limit as the change in x tnds to zero of the change in y over the change in x.

To find the derivative of the function y =  ((2x - 1)³)/√(3x + 1)​, we use the quotient rule.

dy/dx = (vdu/dx - udv/dx)/v²

where u = (2x - 1)³ and v = √(3x + 1)

So, du/dx = 3(2x - 1)² and dv/dx = 3/[2√(3x + 1)]

Substituting the values of the variables into the equation, we have that

dy/dx = (vdu/dx - udv/dx)/v²

dy/dx = (√(3x + 1) × 3(2x - 1)²  -  (2x - 1)³ × 3/[2√(3x + 1)])/[√(3x + 1)]²

dy/dx = (3√(3x + 1)(2x - 1)²  -  3(2x - 1)³/[2√(3x + 1)])/[√(3x + 1)]²

= (3√(3x + 1)√(3x + 1)(2x - 1)²  -  3(2x - 1)³/[2√(3x + 1)])(3x + 1)²

= [3(3x + 1)(2x - 1)²  -  3(2x - 1)³/[2√(3x + 1)])(3x + 1)²

= (2x - 1)²[3(3x + 1)  -  3(2x - 1)/[2√(3x + 1)])(3x + 1)²

= (2x - 1)²[9x + 3  -  6x + 3]/[2√(3x + 1)])(3x + 1)²

= (2x - 1)²[3x + 6]/(2[√(3x + 1)]³)

So, dy/dx = (2x - 1)²[3x + 6]/(2[√(3x + 1)]³)

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The function f(x) = -0.05(x²-18x -40) represents the "height" of the projectile fired from the cannon at a "horizontal-distance" of x.

The function which represents the path, coming out of the cannon is f(x) = -0.05(x²-18x -40);

The term inside the bracket is : (x²-18x -40) is a quadratic expression that represents the shape of the projectile's path.

Now, let us consider the "negative-coefficient" (-0.05) in front of the quadratic expression.

This means that the function will be reflected about the x-axis, which  means that the height of the projectile will be measured downwards from a reference point.

Therefore, f(x) represents the height of the projectile.

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Answer:

115 meters

Step-by-step explanation:

Think of this like a ratio    [tex]\frac{3.2}{1.3} =\frac{x}{46.75}[/tex]

Then solve for x    [tex](\frac{3.2}{1.3} )*46.75 = 115.08[/tex]

The probability that William does his homework is 25/44

Let A be the event that William walks the dog after school, and let B be the event that he does his homework.

We are given:

P(A) = 8/11

P(B|A) = 1/2 (the probability of doing homework given that he walks the dog)

P(B|A') = 3/4 (the probability of doing homework given that he doesn't walk the dog)

We want to find P(B), the probability that William does his homework. We can use the law of total probability, which states that:

P(B) = P(A)×P(B|A) + P(A') × P(B|A')

Substituting the values we have, we get:

P(B) = (8/11) × (1/2) + (3/11) × (3/4)

= 4/11 + 9/44

=16+9/44

= 25/44

Therefore, the probability that William does his homework is 25/44

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An equation to match the graph include the following: f(x) = |x + 1| + 1.

In Mathematics and Geometry, the translation a geometric figure or graph to the left simply means subtracting a digit from the value on the x-coordinate of the pre-image while the translation a geometric figure or graph upward simply means adding a digit to the value on the y-coordinate (y-axis) of the pre-image.

Since the parent function is f(x) = |x|, g(x) would be created by translating f(x) the parent function one unit to the left and one unit upward as follows;

f(x) = |x|

g(x) = |x + 1| + 1

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The angle of elevation from the player's eyes to the center of the rim is approximately 16.2 degrees.

A circle having a radius of 1 that is centred at the origin of a coordinate plane is known as the unit circle. The sine, cosine, and tangent values for every angle in the unit circle are frequently defined in trigonometry.

A radian-measured angle that begins at the positive x-axis and rotates anticlockwise around the circle can be used to represent each point on the unit circle. (Cos, Sin) are the coordinates of the point on the unit circle that corresponds to the angle.

For the given triangle first determine the value of the height from, the player to the top of the baseball pole as follows:

10 - 5.8 = 4.2 units

Now, using the trigonometric identity of tangent we have:

tan θ = opposite / adjacent

tan θ = 4.2 / 15

θ = tan⁻¹(4.2 / 15)

Hence, the angle of elevation from the player's eyes to the center of the rim is approximately 16.2 degrees.

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The principal money her  grandfather originally invested is R= 50000/1.08¹²

What is compound interest?

Compound interest is a type of financial phenomenon in which interest you earn in a savings or investment account earns interest of its own over time. It is also said that Compound interest is the addition of interest to the principal sum of a loan or deposit, or in other words, interest on principal plus interest

the given parameters to help solve the question are

Amount = R50,000

Interest rate = 8%

Time = 25years compounded quarterly

The formula for compound interest compounded quarterly is

A= P × (1 + R/(4 × 100))⁴ⁿ,

where P is the principal and R is the interest rate

50000 = R[1+0.08]⁴*³

50000 = R[1.08)¹²

R= 50000/1.08¹²

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The angle of elevation from Jazmin to the top of the tree is 14°.

We are given that;

Top of tree= 24ft

String= 100ft

Now,

We can use any trigonometric ratio that involves opposite and hypotenuse sides, such as sine or cosine. Let’s use sine for this example.

sin θ = opposite / hypotenuse

sin θ = 24 / 100

sin θ = 0.24

θ = sin^-1 (0.24)

θ = 13.9° (rounded to the nearest degree)

Therefore, by the angle the answer will be 14°.

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The angle that is supplementary to <DEA is DEC

To determine the angle that is supplementary to <DEA , we need to consider the following;

From the information given, we have that;

<DEA is supplementary to <DEC that is sum of angles on a straight line.

Then,

<DEA + <DEC = 180 degrees

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Answer:

1,-6

Step-by-step explanation:the vertex is the lowest/highest point, as you can see here it is at 1,-6

The rectangle have length = 4, breath = 16, perimeter = 40, and area = 64.

The perimeter of a rectangle is the sum of length of its four sides or the sum of its length and breadth, multiplied by two. While the area is the length multiplied by the breadth.

Perimeter = 2(L + B)

Area = L × B

From the question;

2(L + B) = 2LB

32L = 2L(L²)...(1) {since B = L²}

from equation (1), L = 4 by solving for L

so;

B = 4² = 16

perimeter of the rectangle = 2(4 + 16) = 40

area of the rectangle = 4 × 16 = 64

Therefore, the rectangle have length = 4, breath = 16, perimeter = 40, and area = 64.

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The correct mathematical expression to find the number of tiles needed to surround a square pool would depend on how the tiles are arranged and how the dimensions of the pool and the tiles are related.

4(s+1): This expression appears to be correct if we assume that each side of the square pool is surrounded by a row of tiles, and each corner requires an additional tile.

So, the expression can be simplified to 4s+4. This is a valid expression for the number of tiles needed to surround the pool.

s²: This expression does not appear to be correct, as it only gives the area of the square pool, and does not take into account the dimensions of the tiles or the need to surround the pool.

4s+4: This expression is the same as the first expression, 4(s+1), and is a valid expression for the number of tiles needed to surround the pool.

2s+2(s+2): This expression appears to be incorrect, as it gives the total perimeter of the pool plus an additional 4 units, but does not take into account the size of the tiles or the need to surround the pool.

4s: This expression is incorrect, as it only gives the perimeter of the pool and does not take into account the need to surround the pool with tiles.

Thus, two of the given expressions (4(s+1) and 4s+4) are correct, one expression (s²) is incomplete, and two expressions (2s+2(s+2) and 4s) are incorrect.

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Answer:

We need to subtract 41/6 from 53/6 to get 8. Alternatively, we can say that 8 is 41/6 less than 53/6.

Step-by-step explanation:

To determine how much to subtract from 53/6 to make 8, we need to perform the following calculation:

53/6 - x = 8

where x is the amount we need to subtract.

To isolate x, we need to isolate it on one side of the equation. We can do this by subtracting 53/6 from both sides:

53/6 - x - 53/6 = 8 - 53/6

Simplifying the left-hand side gives:

-x = 8 - 53/6 + 53/6

Simplifying the right-hand side gives:

-x = 41/6

Multiplying both sides by -1 gives:

x = -41/6

Therefore, we need to subtract 41/6 from 53/6 to get 8. Alternatively, we can say that 8 is 41/6 less than 53/6.

Answer:  x = -3/2

Step-by-step explanation:

Ratio is a comparison of two or more numbers that indicates their sizes in relation to each other. It is also the comparison of two like or similar quantities.

How to determine this,

The ratio of the amount men spent on swimwear to the amount women spent on swimwear

When the amount men spent on swimwear = $500,000

Amount women spent on swimwear = $2,000,000

Ratio = 500,000 : 2,000,000

Ratio = 500,000/2,000,000

Ratio = 1/4

Ratio = 1 : 4

The ratio as a fraction = 1/4

b. To find the ratio of the amount men spent on swimwear to the total amount men and women spent on swimwear.

Amount men spent on swimwear = $500,000

Total amount men and women spent on swimwear

= $2,000,000 + $500,000

= $2,500,000

Ratio = $500,000 : $2,500,000

Ratio = 500,000/2,500,000

Ratio = 1/5

Ratio = 1 : 5

Ratio expressed as a fraction = 1/5

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Answer: The length of the original side of the square is 22 units.

Step-by-step explanation:

Let x be the length of the original side of the square.

If the sides are increased by 11, the new side length is x + 11.

The area of the new square is given as 400, so we have:

(x + 11)^2 = 400

Expanding the left side: x^2 + 22x + 121 = 400

Subtracting 400 from both sides: x^2 + 22x - 279 = 0

Using the quadratic formula:

x = (-22 ± sqrt(22^2 - 41(-279))) / (2*1)

x = (-22 ± sqrt(12100)) / 2

x = (-22 ± 110) / 2

Taking the positive solution:

x = (-22 + 110) / 2

x = 44 / 2

x = 22

Sample Response: Bobby’s interquartile range is 113, while Amelia’s is 179. A lower interquartile range means Bobby’s scores are closer to the median.

I cannot agree or disagree with personal beliefs. However, based on statistical principles, if the range of Bobby's scores is narrower than Amelia's range, then it is likely that Bobby's scores are closer to his median. Alternatively, if Amelia's scores are spread out more, her median may not be a good representation of the typical score, and her scores may not cluster closely around it. Ultimately, without more information on the distribution of the scores, it is impossible to determine who has scores clustered closer to their median.

The equations that represent circles that have a diameter of 12 units and a center that lies on the y-axis are:

A. x² + (y - 3)² = 36.

D. x² + (y + 8)² = 36.

In Mathematics and Geometry, the standard form of the equation of a circle is represented by the following mathematical equation;

(x - h)² + (y - k)² = r²

Where:

Note: A center that lies on the y-axis simply means the value of h on the x-axis is equal to 0.

Based on the information provided above, we have the following parameters:

Radius, r = diameter/2 = 12/2 = 6 units.

Center, (h, k) = (0, 3).

By substituting the given parameters into the equation of a circle formula, we have the following;

(x - h)² + (y - k)² = r²

(x - 0)² + (y - 3)² = 6²

x² + (y - 3)² = 36.

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The equations that represent circles that have a diameter of 12 units and a center that lies on the y-axis are:

A. x² + (y - 3)² = 36.

D. x² + (y + 8)² = 36.

In Mathematics and Geometry, the standard form of the equation of a circle is represented by the following mathematical equation;

(x - h)² + (y - k)² = r²

Where:

Note: A center that lies on the y-axis simply means the value of h on the x-axis is equal to 0.

Based on the information provided above, we have the following parameters:

Radius, r = diameter/2 = 12/2 = 6 units.

Center, (h, k) = (0, 3).

By substituting the given parameters into the equation of a circle formula, we have the following;

(x - h)² + (y - k)² = r²

(x - 0)² + (y - 3)² = 6²

x² + (y - 3)² = 36.

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D x = 7.8

√7.82

E y = 11.1

√11.12

F x = 5.1

√5.12

G y = 24.3

√24.32

H x = 9.1

√9.12

I y = 15.4

√15.42

J x = 13.7

√13.72

K y = 20.2

√20.22

L x = 11.9

√11.92

M y = 18.3

√18.32

N x = 21

√21

O y = 17.5

√17.52

Using the information regarding the set, it should be noted that (D NE) UF will be {b, a, t, h, s, t}

D U E = {b, a, c, k} U {t, a, s, k}

     = {b, a, c, k, t, s}

Next, we need to find the complement of set D with respect to set E, which is denoted as D NE. This is the set of all elements in E that are not in D: D NE = E \ D = {t, s}

(D NE) UF = {t, s} U {b, a, t, h}

         = {b, a, t, h, s, t}

In conclusion, Using the information regarding the set, it should be noted that (D NE) UF will be {b, a, t, h, s, t}

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Answer:C is your answer

Step-by-step explanation:This is not a 90 degree angle or 360 degree shape

The equation of the ellipse is y² = 35 (1 - x²)

The given ellipse has vertices at ( 0, -6) and ( 0 , 6), which lie on the  y - axis.

The distance between the centr of the ellipse (which also lies on the y -  axis) and each vertex is 6 units. So since we hve

c = 6

and the eccentricity of the ellipse is also given as   e = 6

we can use the r elationship between e, a, and c to find the value of a....

e = c/a

6 = 6/a

a = 1

Using the value of A and C, we  find the equation of the ellipse, we can use the standard form

( x² / a²) + (y² / b²)    = 1

Since the center of the ellipse is at the origin,    know that

x / a² + y² / b  ² = 1

Substituting a and c, ......

x² / 1² + y² / b² = 1

y² / b² = 1 - x²

y² = b² (1 - x²)

We need to find the value of b. We know that the distance between the center and each co-vertex of the ellipse is 5 units. So we state this as

b² = c² - a²

 b² = 6² - 1 ²

b² = 35

Substituting the value of b² in the equation we got earlier, we get

y² = 35(  1 - x²)

Therefore, the equation of the ellipse is:

y² = 35 (1 - x² )

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The correct option that indicates the quadrant that contains the translation of the shaded figure is the option B

B. III

A translation is a transformation in which the size, relative position of the points on the pre-image, are preserved but the location of the pre-image changes to obtain the image.

The shape of the shaded figure is an L-shape

The geometric figure in quadrant II and IV are a reflection of the shaded figure, across the y-axis and across the x-axis, respectively which is not a translation transformation.

The geometric figure in quadrant III can be obtained from the shaded figure by a translation 4 units to the left and 5 units downwards, which can be expressed as <-4, -5>, which is a translation transformation, therefore;

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The change referred to in the headline is an absolute change. An absolute change is a difference or increase in a quantity that is measured without reference to the original or initial value.

In this case, the headline states that enrollments at Northeastern University are expected to increase by 1,700 students. This means that the actual number of students is expected to increase by 1,700 from its current or previous level, without any reference to the original number of students enrolled at Northeastern University.

An absolute change is usually expressed in units of the quantity being measured, such as students, dollars, or meters. In contrast, a relative change is expressed as a percentage or ratio of the original or initial value. A relative change indicates how much a quantity has changed in proportion to its initial value.

For example, if enrollments at Northeastern University were expected to increase by 10%, this would be a relative change because it represents a percentage of the current or previous level of enrollment. However, the headline specifies an absolute increase of 1,700 students, which does not depend on the current or previous level of enrollment.

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The system of linear equations has no solutions.

Here we want to solve the system of linear equations:

2x-  2y = 7

-x + y = -2

One could easily identify that the two lines are parallel, but let's prove it. To do so, we can multiply the second equation by -2.

Then we will get:

-2*(-x + y) = -2*-2

2x - 2y = 4

Then the system of equations is:

2x-  2y = 7

2x - 2y = 4

The coefficients in the left side are the same ones and the constants in the right side are different. Thus, the lines are parallel, and thus, the system has no solutions.

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