Comment factoriser (x-4)^{2}-36

The conjugate of the complex number z = 12 + i is [tex]\hat{z}=12-i[/tex]

An equation is an expression that shows how two or more numbers and variables are related using mathematical operations of addition, subtraction, multiplication, division, exponents and so on.

Complex number are in the form a + bi, where a is the real part and b is the imaginary part. Both a and b are real numbers

The conjugate of a complex number z = a + bi is [tex]\hat{z}=a-ib[/tex]

Given that z = 12 + i

The conjugate of z is [tex]\hat{z}=12-i[/tex]

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Answer:

4

Step-by-step explanation:

10x+2-2x=

10x-2x=2

8x=2

divide both sides by 8

x=2/8

x=4

The mark price of the shoes is Php 1250.

Mark price (MP) refers to the original or listed price of a product or service before any discounts, promotions or markdowns are applied. It is the price that a retailer sets for a product with the intention of making a profit.

Since Sarah bought the shoes at a sale of 20%, she paid only 80% of the mark price. This can be expressed as:

80% of MP = Php 1000

0.8MP = Php 1000

To find MP, we need to divide both sides by 0.8:

MP = Php 1000 / 0.8

MP = Php 1250

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To get distance we use formula derived in Question 15, which gives an approximation of the circumference of the wheel based on its diameter which is 471.24nft

[tex]C = \pi d[/tex]

where d: diameter and C: circumference.

With the diameter of 150 feet provided, we can calculate the wheel's circumference as follows:

[tex]C = π(150) = 471.24 ft[/tex]

For our issue, let's define some variables:

n: the number of times the Ferris wheel has rotated

d: the Ferris wheel's circumference

C: the Ferris wheel's circumference

S: the total distance a passenger travels

Given that a passenger travels one circumference every spin, the overall distance after n rotations is roughly equal to:

S ≈ nC

In place of our values, we obtain:

[tex]S = n(471.24) = 471.24n ft[/tex]

So, assuming the Ferris wheel has a 150-foot diameter, we may use the equation S 471.24n to roughly calculate the total distance a passenger would have travelled in ferris wheel spins. However keep in mind that this is just a rough estimate, and it might not be completely correct depending on things like the size of the carriage and the height of the passenger above the ground.

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The value of x for which PQ and RS are parallel, is 83°.

The two parallel lines PQ and RS are stretched from Q to M and S to N, respectively, in the accompanying figure.

In addition, a line from T to O is drawn parallel to PQ and RS.

Now, in the illustration,

∠MPT = 180° -  135°

∠MPT = 45°

The parallel lines MQ and OT are divided by the transversal line PT.

∠MPT = ∠PTO = 45°

∠TRN = 180° - 142°

∠TRN = 38°

A transversal line TR splits the parallel lines NS and OT.

Then, ∠TRN  = ∠OTR = 38°

∠PTO + ∠OTR = x

x = 45° + 38°

x = 83°

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Using Pythagorean theorem, the volume of the cylinder is 201.1 cubic units

To determine the volume of the cylinder, we have to find the height of the cylinder.

using Pythagoras theorem, we can find the height of the cylinder.

13² = 5² + x²

x² = 13² - 5²

x² = 144

x = √144

x = 12 units

The volume of a cylinder is given as

V = 1/3 πr²h

v = 1/3 * 3.14 * 4² * 12

v = 64π cubic units

v = 201.1 cubic units

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Answer:

y=-1/4x+1

Step-by-step explanation:

As a result, the answer tο the fοllοwing questiοn, sum οf all sides οf a hexagοn = 720 where the value οf b = 136.

In geοmetry, a hexagοn is a six-sided pοlygοn οr hexagοn that fοrms the cube's shape. Internal angles οf a simple hexagοn add up tο 720°. A hexagοn is a clοsed twο-dimensiοnal pοlygοn with six sides. A hexagοn has six cοrners οn each side. Hexa represents six and gοna represents an angle. Hexagοnal shapes are fοund in sοccer balls, hοneycοmbs, flοοr tiles, and pencil surfaces. A hexagοn is a six-sided pοlygοn in geοmetry. A regular hexagοn is οne that has all οf its sides and angles the same length.

Sum οf all sides οf a hexagοn = (n - 2) × 180°

= (6 - 2) × 180°

= 720°

Frοm the given hexagοn, sum οf all angles

110 + 116 +(180 - 68) + (180 - 70) + 2bx = 720

b = 136

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Answer:    -48y+6x+40

Step-by-step explanation: when you multiply two minuses that is +.

We locate the [tex](5x+4)(x+7)[/tex] in order to solve this trinomial problem.

The quadratic trinomial formula inside one variable has the general form ax2 + bx + c, where a, b, and c are constant terms and none of them are zero. If b2 - 4ac > 0, we're able to factor a quadratic trinomial for any value of a, b, and c. It denotes that, where h and k are real values,

A single-term expression is referred to as a monomial, a two-term expression as a factorial, and a three-term expression as a trinomial. a phrase that contains more than three terms is identified only by the quantity of its terms.

Given,  [tex]5 x^{2} + 4 x + 35 x + 28[/tex]

Regroup terms into two proportional parts [tex](5 x^{2} + 4 x) + (35 x + 28)[/tex]

Factor Greatest Common Factors out [tex]x (5 x + 4) + 7 (5 x + 4)[/tex]

Factor Greatest Common Factors out [tex](5 x + 4) (x + 7)[/tex]

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According to the given information, 0.97306, 0.02669, and 0.000005.

What is probability?

Probability is a measure of the likelihood or chance of an event occurring. It is a number between 0 and 1, where 0 represents an impossible event and 1 represents a certain event.

a. The probability that a golfer does not score a hole in one on the sixth hole is [tex]$1 - \frac{1}{3,709}$[/tex]. Since there are 156 golfers, the probability that none of them score a hole in one is

[tex]$$\left(1 - \frac{1}{3,709}\right)^{156} \approx 0.97306$$[/tex]

The probability that no one gets a hole in one on the sixth hole is 0.97306

b. The probability that exactly one golfer gets a hole in one on the sixth hole is

[tex]$${156 \choose 1} \cdot \frac{1}{3,709} \cdot \left(1 - \frac{1}{3,709}\right)^{155} \approx 0.02669$$[/tex]

The probability that exactly one golfer gets a hole in one on the sixth hole is 0.02669

c. The probability that four golfers score a hole in one on the sixth hole is

[tex]$${156 \choose 4} \cdot \left(\frac{1}{3,709}\right)^4 \cdot \left(1 - \frac{1}{3,709}\right)^{156-4} \approx 0.000005$$[/tex]

The probability that four golfers score a hole in one on the sixth hole is 0.000005

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Answer:

b = 6

Step-by-step explanation:

step one: Simplify 10^2 to 100

Step two: Simplify 8^2 to 64

Step three: Subtract 64 from both sides

Step four: Simplify 100 - 64 to 36

Step Five: Take the square root of both sides

Step Six: Since 6*6=36, the square root of 36 is 6

Step Seven: Switch sides b = positive 6

I hoped this helped

The amount of feet the circumference of the outer circle is greater than the circumference of the inner circle is 18.86 feet.

Circumference is the measure of distance around a circle.

To calculate the how many feet the circumference of the outer circle is greater than the circumference of the inner circle, we use the formula below.

Formula:

Where:

From the question,

Given:

Substitute these values into equation 1

Hence, the difference in circumference between the outer and the inner is 18.86

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Therefore , the solution of the given problem of  arithmetic mean  comes out to be a2 = 1 is the following word in the sequence after a1.

The average values of a list, also known as the organization's values, are calculated by adding up all of the list's values. These average values are then adjusted by the proportion of list components in the largest density. similar growth patterns can be seen in math. The average of the actual numbers 5, 7, and 9 is 4, and the result of adding three to the number 21 (there are currently several three-digit numbers) is seven.

Here,

Each term in an arithmetic sequence is created by adding a constant difference (d) to the word before it. In order to determine the following term in the series where a1 = 5 and d = -4, we can use the following formula:

=> a = a1 +  (n-1)*d

where an is the sequence's nth word.

Inputting a1 = 5 and d = -4 results in:

=> a2 = a1 + (2-1)*d = 5 + (-4) = 1

As a result, a2 = 1 is the following word in the sequence after a1.

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Answer:

what kind of thesis are you wanting?

Using trigonometric ratios the value for line segment DC is obtained as 30.5 units.

Triangle side length ratios are known as trigonometric ratios. In trigonometry, these ratios show how the ratio of a right triangle's sides to each angle. Sine, cosine, and tangent ratios are the three fundamental trigonometric ratios. In triangle ABD, the values given are -

∠BDA = 90°,

∠A = 54° and

AB = 20 units

According to the sum property of a triangle.

∠BDA + ∠A + ∠ABD = 180°

Substitute the values into the equation -

90° + 54° + ∠ABD = 180°

144° + ∠ABD = 180°

∠ABD = 180° - 144°

∠ABD = 36°

Now according to trigonometric ratios -

cos θ = Base / Hypotenuse

In triangle ABD -cos 36° = BD / AB

Substitute the values into the equation -

cos 36° = BD / 20BD

= cos 36° × 20BD

= 0.80901 × 20BD

= 16.18

≈ 16.2

Now in triangle BDC, the values given are -

∠BDC = 90°, ∠C = 28° and BD = 16.2

Now according to trigonometric ratios -tan θ = Perpendicular / Base

In triangle BDC -tan 28° = BD / DC

Substitute the values into the equation -

tan 28° = 16.2 / DC

DC = 16.2 / tan 28°

DC = 16.2 / 0.53170

DC = 30.46 ≈ 30.5 units

Therefore, the value for DC is obtained as 30.5 units.

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Answer:

a. i dk how to do this qn

b. cot (cos^-1(a))

let cos^-1(a) = θ

implies, cosθ = a

from the figure, cotθ = [tex]\frac{x}{\sqrt{1 -x^{2} } }[/tex]

pls mrk me brainliest

Answer:  pic please so i know some more info thanks

Step-by-step explanation: pic please so i know some more info thanks

Hi,

The correct answer should be "CE" and "CB" I just had the same question so my answer should be correct.

I hope that this helped you. :)

To determine the zeros of f(x) and state the multiplicity of each zero, the following steps should be followed:

Step 1: Determine the roots of the polynomial

To solve for the roots of f(x), use the quadratic formula. f(x) = x⁴ + 12x² - 64

a = 1, b = 12, c = -64

Using the quadratic formula, we have:

x = (-b ± √(b² - 4ac)) / 2a

x = (-12 ± √(12² - 4(1)(-64))) / 2(1)

x = (-12 ± √400) / 2

x = (-12 ± 20) / 2

x₁ = -16

x₂ = 4

x₃ = x₄ = 0

Step 2: State the multiplicity of each zero

After determining the roots of f(x), determine the multiplicity of each root by using the concept of multiplicity. A root has a multiplicity of p if and only if f(x) has a factor of (x - r)ᵖ.

From the quadratic equation above, we have:

x₁ = -16 (multiplicity 1)

x₂ = 4 (multiplicity 1)

x₃ = x₄ = 0 (multiplicity 2)

Therefore, the zeros of f(x) and their multiplicities are: x = -16 (multiplicity 1), x = 4 (multiplicity 1), and x = 0 (multiplicity 2).

The final answer is as follows:

x = -16 with multiplicity 1

x = 0 with multiplicity 2

x = 4 with multiplicity 1.

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Answer:

Answer:19.54 square feet.

The cost of 10.0 gallons of gasoline priced at 1.449 per gallon is 14.49.

The cost of 10.0 gallons of gasoline priced at 1.449 per gallon can be determined using the formula Cost = Quantity * Price. To calculate the cost, first multiply 10.0 (the quantity) by 1.449 (the price). This gives the value 14.49, which is the cost of 10.0 gallons of gasoline priced at 1.449 per gallon.

To explain this further, when calculating the cost of an item, we need to take into account both the quantity and the price of that item. The quantity is the amount of the item that we will be purchasing, and the price is the amount that we will be paying for that item. In the case of gasoline, 10.0 gallons is the quantity, and 1.449 is the price per gallon.

To calculate the cost, we need to multiply the quantity by the price. This gives us the cost of the item. In this case, multiplying 10.0 (the quantity) by 1.449 (the price) gives us 14.49, which is the cost of 10.0 gallons of gasoline priced at 1.449 per gallon.

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Answer:

see explanation

Step-by-step explanation:

the equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

calculate m using the slope formula

m = [tex]\frac{y_{2}-y_{1} }{x_{2}-x_{1} }[/tex]

with (x₁, y₁ ) = (3a, 0 ) and (x₂, y₂ ) = (0, 3b )

m = [tex]\frac{3b-0}{0-3a}[/tex] = [tex]\frac{3b}{-3a}[/tex] = - [tex]\frac{b}{a}[/tex]

the line crosses the y- axis at (0, 3b ) ⇒ c = 3b

y = - [tex]\frac{b}{a}[/tex] x + 3b ← equation of line

to show that (a, 2b ) lies on the line , substitute x = a into the equation and if y = 2b then the point lies on the line

y = - [tex]\frac{b}{a}[/tex] (a) + 3b = - b + 3b = 2b

then the line passes through the point (a, 2b )

Answer: 312

Step-by-step explanation:

Estimate: One way to estimate the quotient of 2,496 ÷ 8 is to round 2,496 to the nearest multiple of 8, which is 2,496 rounded to 2,496. Then, we can divide 2,496 by 8, which gives an estimated quotient of 312.

The probability of a collision between two galaxies depends on a variety of factors, such as the size, mass, and relative velocities of the galaxies.

The probability of a collision between two galaxies depends on a variety of factors, such as the size, mass, and relative velocities of the galaxies. If the galaxies are in a spiral elipse, then the tangential velocity of the galaxies may be different, and this could affect the probability of a collision. However, without knowing more information about the galaxies, it is impossible to accurately calculate the probability of a collision.

If the galaxies are in a spiral elipse, then it is important to consider the tangential velocity of the galaxies, as this could affect the probability of a collision. Additionally, the relative angular momentum of the galaxies, their proximity to one another, and their respective trajectories also play a role. Without knowing more information about the galaxies, such as their exact positions, velocities, and masses, it is impossible to accurately calculate the probability of a collision.

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The fixed cost per unit based on cost of the machine per part manufactured is $0.42 per unit.

What is multiplication ?

Multiplication is a mathematical operation that involves finding the product of two or more numbers or quantities. It is a way of adding a number to itself multiple times. The symbol used to represent multiplication is an "x" or a dot "·". For example, in the expression 5 x 6 = 30, 5 and 6 are multiplied together to give the product of 30. Multiplication can also be represented using parentheses, such as (5)(6) = 30. In addition, multiplication can be done with decimals, fractions, variables, and matrices.

To find the fixed cost per unit based on the cost of the machine per part manufactured, we need to calculate the total number of units produced by the machine over its estimated useful life, and then divide the cost of the machine by that number.

The machine runs at its capacity of 1,000 units per month for 10 years, so the total number of units produced by the machine is:

10 years x 12 months/year x 1,000 units/month = 120,000 units

The cost of the machine is $50,000, so the fixed cost per unit based on the cost of the machine per part manufactured is:

$50,000 ÷ 120,000 units = $0.4167 per unit

Rounding this to the nearest penny gives us the final answer of:

$0.42 per unit (option a)

Therefore, the fixed cost per unit based on cost of the machine per part manufactured is $0.42 per unit.

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Therefοre , the sοlutiοn οf the given prοblem οf percentage cοmes οut tο be  a)k ≈ 0.0279,b)y = 0.593a  and  c)t ≈ 78.5 .

In statistics, a percentage is a figure οr an integer that is expressed as a fractiοn οf 100. Additiοnally, the wοrds "pct.," "pct," but alsο "pc" are rarely used. The "%" symbοl, hοwever, is cοmmοnly used tο denοte it. There are nο dimensiοns; the percentage tοtal is flat.

Percentages are really just numbers because the numeratοr is 100. Tο indicate that a number is a percentage, either the percent character (%) οr the text "percent" must appear befοre it.

Here,

a) We can apply the exponential decline equation:

=> [tex]y = ae^{(-kt)} (-kt)[/tex]

[tex]0.9a = ae^{(-5k)} (-5k)[/tex]

Using a to divide both sides:

[tex]0.9 = e^{(-5k)} (-5k)[/tex]

Using both sides' natural logarithms:

ln(0.9) = -5k

calculating k:

[tex]k = -ln(0.9)/5[/tex]

k ≈ 0.0279

Consequently, the decline formula's value of k is roughly 0.0279.

b)

[tex]y = ae^{(-kt)} (-kt)[/tex]

[tex]y = an e^{(-0.0279*10)[/tex]

[tex]y = 0.593a[/tex]

As a result, after 10 years, only about 59.3% of the initial DDT is still present.

c)

[tex]0.25a = ae^{(-0.0279t) (-0.0279t)[/tex]

Using a to divide both sides:

[tex]0.25 = e^{(-0.0279t) (-0.0279t)[/tex]

Using both sides' natural logarithms:

ln(0.25) = -0.0279t

calculating t:

t = -ln(0.25)/0.0279

t ≈ 78.5

Therefore, roughly 78.5 years after the ban in 1972, or in the year 2050, the concentration of DDT will drop below 25%.

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the average weight beyond which the elevator would be considered overloaded is approximately 7616.56 lbs.

What is probability?

Probability is a measure of the likelihood that an event will occur. It is a number between 0 and 1, where 0 represents an impossible event and 1 represents a certain event. Probabilities are usually expressed as fractions, decimals, or percentages.

The total weight of 35 men in the elevator can be modeled by the sum of 35 independent and identically distributed normal random variables with mean 174 lbs and standard deviation 29 lbs. Let X be the weight of one man, then the total weight of 35 men is W = 35X.

The mean of W is:

μW = E(W) = E(35X) = 35 E(X) = 35 * 174 = 6090 lbs

The variance of W is:

Var(W) = Var(35X) = 35^2 Var(X) = 35^2 * 29^2 = 899150

The standard deviation of W is:

σW = sqrt(Var(W)) = sqrt(899150) = 947.85

To find the average weight beyond which the elevator would be considered overloaded, we need to find the weight that corresponds to the 95th percentile of the distribution of W, since the elevator is overloaded if the total weight is in excess of 6475 lbs.

Using a standard normal distribution table or a calculator, we can find the z-score that corresponds to the 95th percentile: z = 1.645 (rounded to 3 decimal places).

We can then find the weight w that corresponds to this z-score:

w = μW + z * σW

w = 6090 + 1.645 * 947.85

w ≈ 7616.56

Therefore, the average weight beyond which the elevator would be considered overloaded is approximately 7616.56 lbs.

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B. Probability that the biscuit is made by machine and is not broken is:

1-(25% × 2%)

= 50%

c. The probability of breakage: 2% + 3% + 5% = 10%

d. Probability that biscuit is not made by machine = 1-5% = 95%

Probability is the concept that describes the likelihood of an event occurring. In real life, we frequently have to make predictions about how things will turn out. About an event's outcome, we might be certain or uncertain.

When this occurs, we state that there is a possibility that the event will occur. In general, probability has many excellent applications in games, commerce, and this newly growing area of artificial intelligence.

Now from the question,

The probability that the biscuit is made by machine and not broken:

1 - 25% × 2%

= 50%

Now not broken probability = 1- 25% × 2%

Now next, the probability of breakage: 2% + 3% + 5% = 10%

Finally, the probability that biscuit is not made by machine = 1-5% = 95%

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