***PLEASE HELP ASAP *** [ The product of 13 and x is less than 36 ]

Answer:

x² + 34x + 104 = 0

x² + 34x = -104

x² + 34x + ((1/2)(34))² = -104 + ((1/2)(34))²

x² + 34x + 17² = -104 + 17²

x² + 34x + 289 = 185

(x + 17)² = 185

x + 17 = +√185

x = -17 + √185

The probability that a specific fire engine is not available when needed is 0.04 (since the probability of it being available is 0.96).

The question asks for two probabilities related to the availability of fire engines in a town. The first part asks for the probability that neither engine is available when needed, and the second part asks for the probability that a fire engine is available when needed.

To calculate the probability that neither engine is available when needed, we need to use the multiplication rule for independent events. We know that the probability that one specific engine is not available when needed is 0.04 (1 - 0.96). Since the two engines operate independently, the probability that both are not available when needed is the product of their individual probabilities:

P(neither available) = P(engine 1 not available) * P(engine 2 not available)

P(neither available) = 0.04 * 0.04

P(neither available) = 0.0016

Therefore, the probability that neither fire engine is available when needed is 0.0016.

To calculate the probability that a fire engine is available when needed, we can simply use the given probability of 0.96:

P(available) = 0.96

Therefore, the probability that a fire engine is available when needed is 0.96.

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By using unitary method, it is obtained that

a)  9 painters took 2hours 48 minutes to paint a ware house

b)  9 painters earns 214.2 euros by working 2.8 hours

What is unitary method?

Unitary method is the process in which the value of single unit can be calculated from the value of multiple unit and the value of multiple unit can be calculated from the value of single unit. Sometimes Value of single unit can be less than the value of multiple unit. For example - The relation between the cost of a commodity and the quantity of the commodity

Sometimes Value of single unit can be more than the value of multiple unit. For example - The relation between the number of men and the number of days taken by those men to do a certain job.

Here, unitary method is used

a) Four painters took  6.3 hours to paint a ware house

    1 painter take \(6.3 \times 4\) hours to paint a ware house

    9 painters took \(\frac{6.3 \times 4}{9}\) hours to paint a ware house

    9 painters took 2.8 hours to paint a ware house

    9 painters took 2hour + \(0.8 \times 60\) minutes to paint a ware house

    9 painters took 2hours 48 minutes to paint a ware house

b) Each painter earns 8.5 euros per hour worked

   Each painter earns 8.5 \(\times\) 2.8 euros by working 2.8 hours

   9 painters earns 8.5 \(\times\) 2.8 \(\times\) 9 euros by working 2.8 hours

    9 painters earns 214.2 euros by working 2.8 hours

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The roots of the function f(x) =\(x^3 + 3x^2 + x - 5\) are approximately x ≈ -2.27 (real root) and x ≈ -0.36 + 1.56i, x ≈ -0.36 - 1.56i,   \((x-1)(x^3+3x^2+x-5)\).

To find the roots of the function f(x) = x^3 + 3x^2 + x - 5, we need to solve for values of x that make the function equal to zero.

One approach to finding the roots is by using factoring or synthetic division, but in this case, the function does not have any obvious rational roots. Therefore, we can use numerical methods such as the Newton-Raphson method or graphing techniques to approximate the roots.

Using a graphing calculator or software, we can plot the function f(x) = x^3 + 3x^2 + x - 5. By analyzing the graph, we can estimate the x-values where the function intersects the x-axis, indicating the roots.

Upon analyzing the graph or using numerical methods, we find that the function has one real root approximately equal to x ≈ -2.27.

The other two roots are complex conjugates, which means they come in pairs of the form a + bi and a - bi. For this particular function, the complex roots are approximately x ≈ -0.36 + 1.56i and x ≈ -0.36 - 1.56i.

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The value of the voltage of the electricity is 6 + j + 2j²

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

C = 2 - j

I = 3 + 2j

The formula of voltage is given as

V = CI

Substitute the known values in the above equation, so, we have the following representation

V = (2 - j) * (3 + 2j)

Open the brackets

So, we have

V = 6 + 4j - 3j + 2j²

Evaluate the like terms

V = 6 + j + 2j²

Hence, the voltage is 6 + j + 2j²

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Answer:

The quadratic equations and their solutions are;

9 ± √33 /4 = 2x² - 9x + 6.

4 ± √6 /2 = 2x² - 8x + 5.

9 ± √89 /4 = 2x² - 9x - 1.

4 ± √22 /2 = 2x² - 8x - 3.

Explanation:

Any quadratic equation of the form, ax² + bx + c = 0 can be solved using the formula x = -b ± √b² - 4ac / 2a. Here a, b, and c are the coefficients of the x², x, and the numeric term respectively.

We have to solve all of the five equations to be able to match the equations with their solutions.

2x² - 8x + 5, here a = 2, b = -8, c = 5.                                                  x = -b ± √b² - 4ac / 2a = -(-8) ± √(-8)² - 4(2)(5) / 2(2) = 8 ± √64 - 40/4.     24 can also be written as 4 × 6 and √4 = 2. So                                                                                     x = 8 ± 2√6 / 2×2= 4±√6/2.

2x² - 10x + 3, here a = 2, b = -10, c = 3.                                                   x =-b ± √b² - 4ac / 2a =-(-10) ± √(-10)² - 4(2)(3) / 2(4) = 10 ± √100 + 24/4. 124 can also be written as 4 × 31 and √4 = 2. So                                                                              x = 10 ± 2√31 / 2×2 = 5 ± √31 /2.

2x² - 8x - 3, here a = 2, b = -8, c = -3.                                                    x = -b ± √b² - 4ac / 2a = -(-8) ± √(-8)² - 4(2)(-3) / 2(2) = 8 ± √64 + 24/4.     88 can also be written as 4 × 22 and √4 = 2. So                                                                             x = 8 ± 2√22 / 2×2 = 4± √22/2.

2x² - 9x - 1, here a = 2, b = -9, c = -1.                                                     x = -b ± √b² - 4ac / 2a = -(-9) ± √(-9)² - 4(2)(-1) / 2(2) = 9 ± √81 + 8/4.                                          x = 9 ± √89 / 4.

2x² - 9x + 6, here a = 2, b = -9, c = 6.                                                    x = -b ± √b² - 4ac / 2a = -(-9) ± √(-9)² - 4(2)(6) / 2(2) = 9 ± √81 - 48/4.                                                                             x = 9 ± √33 / 4 .

Step-by-step explanation:

P + 7 ≤  50

He can spend less than but no more than $50. So whatever he buys plus the 7 dollar admission can be equal to but not greater than 50.

If f is a function that is everywhere increasing and concave upwards, the inverse of f, denoted by f^-1, has the following properties: (C) f^-1 is increasing and concave downwards.

The reason behind this is that if f is an increasing function, then its inverse, f^-1, is also an increasing function. This is because if f(a) < f(b) for a < b, then f^-1(f(a)) < f^-1(f(b)) which means a < b.
Regarding the concavity, since f is concave upwards, it implies that its second derivative, f''(x), is positive. When we find the inverse of f, the concavity flips, so f^-1 becomes concave downwards. This happens because the inverse function essentially "reflects" f over the y=x line, and this reflection changes the concavity.

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Answer:

A or the first one

Given that John climbs a height of \($(x + 5)$\) miles in \($(x - 1)$\) hours and Jane climbs a height of \($(x + 11)$\) miles in \($(x + 1)$\) hours. We know that the distance covered by both John and Jane are equal.

Distance covered by John = Distance covered by Jane

Therefore, \($(x + 5) = (x + 11)$\)

Thus, x = 6

Now, we need to find the speed of both, which is given by the formulae:

Speed = Distance / Time

So, speed of John = \($(x + 5) / (x - 1)$\) Speed of John =\($11 / 5$\) mph

Similarly, speed of Jane = \($(x + 11) / (x + 1)$\)

Speed of Jane = \($17 / 7$\) mph

Since both have to be equal, Speed of John = Speed of Jane Therefore,

\($(x + 5) / (x - 1) = (x + 11) / (x + 1)$\)

Solving this equation we get ,x = 2Speed of John = \($7 / 3$\) mph

Speed of Jane = \($7 / 3$\) mph

Thus, their speed was \($7 / 3$\) mph.

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\(x = 6y - 18 \\ 6y - 18 = x \\ 6y = x + 18 \\ y = \frac{x + 18}{6} \)

Alternative Answer:

\(y = \frac{x}{6} + 3\)

Both of them work.

Answer:

Step-by-step explanation:

\(\frac{4}{5}+\frac{3}{20}\\ \\ \frac{4}{5}\left(\frac{4}{4}\right)+\frac{3}{20}\\ \\ \frac{16+3}{20}\\ \\ \frac{19}{20}\)

Answer:

  B.  least 2°; greatest 178°

Step-by-step explanation:

The measure of ∠ADC will be the sum of the measures of the two acute angles ADB and BDC.

__

Each acute angle with a measure that is a whole number of degrees will have a measure between 1° and 89°, inclusive.

The least sum of two such angles will be ...

  1° +1° = 2°

The greatest sum of two such angles will be ...

  89° +89° = 178°

Answer:

60 minutes

Step-by-step explanation:

Latitude and longitude are measuring lines used for locating places on the surface of the Earth. They are angular measurements, expressed as degrees of a circle. A full circle contains 360°. Each degree can be divided into 60 minutes, and each minute is divided into 60 seconds.

One degree of latitude is equal to approximately 60 nautical miles or 69 statute miles. Since a minute of latitude is one-sixtieth of a degree, it follows that one degree of latitude is equal to 60 minutes.

This means that there are 60 nautical miles or 69 statute miles between two points that differ by one minute of latitude.

The minute of latitude is a widely used unit for measuring distances on Earth, particularly in navigation and aviation. It allows for precise calculations and is crucial for determining positions accurately. Understanding the relationship between degrees of latitude and minutes helps in determining distances, estimating travel times, and ensuring accurate navigation across the globe.

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The series 7/8 − 7/10 + 7/12 − 7/14 + 7/16 − ..... is an alternating series, meaning that the signs of the terms alternate between positive and negative. To rewrite this series as a summation notation with an infinity symbol, we need to first determine the pattern of the denominator.

The denominators of the terms in the series are 8, 10, 12, 14, 16, .... We can see that the denominator of the nth term is 8 + 2(n-1), or 2n + 6.
Using this pattern, we can rewrite the series as:
7/8 − 7/10 + 7/12 − 7/14 + 7/16 − ..... = ∑(-1)^(n-1) 7/(2n + 6) from n = 1 to infinity.
Therefore, the answer to your question is:
The series 7/8 − 7/10 + 7/12 − 7/14 + 7/16 − ..... can be rewritten as ∑(-1)^(n-1) 7/(2n + 6) from n = 1 to infinity.

Rewriting the given series using summation notation. The series you provided is:
7/8 − 7/10 + 7/12 − 7/14 + 7/16 − ...
This series can be rewritten using the summation notation as:
∑((-1)^(n-1) * 7/(6+2n)) from n=1 to infinity.

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Answer:

1320

Step-by-step explanation:

880/8 = 110

12x110 = 1320

Answer:

1,320

Step-by-step explanation:

880/8= $110

$110×12= 1,320

If  a certain airline requires that carry-on luggage. the maximum possible volume of a piece of carryon luggage is:  2,304 cubic inches.

Maximum possible volume describes the biggest amount of space that a 3 dimensional object may occupy .

Using this formula to determine the maximum possible volume of a piece of carryon luggage

V = length x height x width

Where:

Length = 24 in

Height = 12 in

Width = 8 in

Let plug in the formula

V = 24 in x 12 in x 8 in

V = 2,304 cubic inches

Therefore the maximum possible volume is 2,304 cubic inches.

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The probability of at least 30 left-handed individuals in a sample of 100

What is boinomial probability ?

Binomial probability refers to the probability of a particular number of "successes" occurring in a fixed number of independent trials. In other words, it calculates the probability of a specific outcome happening a certain number of times in a given set of trials.

The binomial probability formula is:

P(X=k) = (n choose k) *\(p^{k}\) * \((1-p)^{(n-k)}\)

where:

P(X=k) is the probability of getting k successes in n trials

n is the number of trials

k is the number of successes

p is the probability of success on a single trial

(n choose k) is the binomial coefficient, which represent

He probability of selecting at least 30 left-handed individuals out of a sample of 100 adults in the US can be calculated using the binomial probability formula with x counting the number who are left-handed.

However, we must be careful when applying the formula to this problem because the sample is selected without replacement. The binomial distribution assumes that each trial is independent of the others, which is not the case when sampling without replacement.

In cases where the sample size is much smaller than the population size, the effect of not replacing the selected individuals is negligible. However, when the sample size is a substantial portion of the population size, as in this case, the probability of selecting an individual who is left-handed changes after each selection. This means that the probabilities of each selection are not independent, and the binomial formula cannot be used.

Therefore, to accurately calculate the probability of at least 30 left-handed individuals in a sample of 100 adults selected in the US without replacement, we need to use a different probability distribution, such as the hypergeometric distribution.

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\( \qquad \qquad \bf \huge\star \: \: \large{ \underline{Answer} } \huge \: \: \star\)

\(\qquad❖ \: \sf \:x = - \dfrac{ 9}{20} \)

\(\textsf{ \underline{\underline{Steps to solve the problem} }:}\)

\(\qquad❖ \: \sf \:2(3x + 1) + 3(5x + 2) = x - 1\)

\(\qquad❖ \: \sf \:6x + 2 + 15x + 6 = x - 1\)

\(\qquad❖ \: \sf \:(6x + 15x - x) + (2 + 6 + 1) = 0\)

\(\qquad❖ \: \sf \:20x + 9 = 0\)

\(\qquad❖ \: \sf \:20x = - 9\)

\( \qquad \large \sf {Conclusion} : \)

\(\qquad❖ \: \sf \:x =- \cfrac{ 9}{20} \)

\(\huge\underline{\red{A}\green{n}\blue{s}\purple{w}\pink{e}\orange{r} →}\)

Step-by-step explanation:

________________________________

→ 2(3x + 1) + 3(5x + 2) = x – 1

→ 6x + 2 + 15x + 6 = x – 1

→ 21x + 8 = x – 1

→ 21x – x = – 1 – 8

→ 20x = – 9

→ x = –9/20

________________________________

Answer:

Step-by-step explanation:

26:30

=13:15

Answer:

13:15

Step-by-step explanation:

Nazma/Razia= 26/30= 13/15

13:15

On solving the provided question, we can say that the sum of the two expressions will be -4n + 6

It is possible to multiply, divide, add, or subtract in math. An expression has the following structure: (Mathematical Operator, Number/Variable, Expression) A mathematical expression is made up of numbers, variables, and functions (such as addition, subtraction, multiplication or division etc.)It is possible to compare expressions and phrases.

Expression, Number/Variable, and Mathematical Operator Numbers, variables, and functions are the building blocks of a mathematical expression (such as addition, subtraction, multiplication or division etc.) Expressions and phrases can be contrasted.

let the two expression be

-4nand 6 and the sum will be -4n + 6

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If P(B)=0.3, P(A|B)=0.5, P(B')=0.7and P(A|B')=0.8, then the value of the probability P(B|A)= 0.2113

To find the value of P(B|A), follow these steps:

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Exact value of the definite integral is 320. Comparing the results: Exact value of the definite integral = 320, Trapezoidal Rule approximation (n = 4) = 340, Simpson's Rule approximation (n = 4) ≈ 246.6667.

What is trapezoid?

A trapezoid is a quadrilateral (a polygon with four sides) that has one pair of parallel sides. The parallel sides are called the bases of the trapezoid, while the non-parallel sides are called the legs.

To approximate the value of the definite integral ∫[0, 4] 5x * x^2 dx using the Trapezoidal Rule and Simpson's Rule, we need to specify the value of n, which represents the number of subintervals.

Let's calculate the approximations using n = 4 for both methods:

Trapezoidal Rule:

Using n = 4, we divide the interval [0, 4] into four subintervals of equal width: h = (4 - 0) / 4 = 1.

The approximated value using the Trapezoidal Rule is given by:

\(T_4 = (h/2) * [f(x_0) + 2f(x_1) + 2f(x_2) + 2f(x_3) + f(x_4)]\)

Plugging in the values:

\(T_4 = (1/2) * [f(0) + 2f(1) + 2f(2) + 2f(3) + f(4)]\\\\= (1/2) * [5(0)(0^2) + 2(5)(1)(1^2) + 2(5)(2)(2^2) + 2(5)(3)(3^2) + 5(4)(4^2)]\\\\= (1/2) * [0 + 10 + 80 + 270 + 320]\\\\= (1/2) * 680\\\\= 340\)

Simpson's Rule:

Using n = 4, we divide the interval [0, 4] into four subintervals of equal width: h = (4 - 0) / 4 = 1.

The approximated value using Simpson's Rule is given by:

\(S_4 = (h/3) * [f(x_0) + 4f(x_1) + 2f(x_2) + 4f(x_3) + f(x_4)]\)

Plugging in the values:

\(S_4 = (1/3) * [f(0) + 4f(1) + 2f(2) + 4f(3) + f(4)]\\\\= (1/3) * [5(0)(0^2) + 4(5)(1)(1^2) + 2(5)(2)(2^2) + 4(5)(3)(3^2) + 5(4)(4^2)]\\\\= (1/3) * [0 + 20 + 40 + 360 + 320]\\\\= (1/3) * 740\\\\= 246.6667\)

Exact value of the definite integral:

∫[0, 4] 5x * \(x^2\) dx = [(5/4) * \(x^4\)] evaluated from 0 to 4

\(= (5/4) * 4^4 - (5/4) * 0^4\\\\= (5/4) * 256 - (5/4) * 0\\\\= 320 - 0\\\\= 320\)

Comparing the results:

Exact value of the definite integral = 320

Trapezoidal Rule approximation (n = 4) = 340

Simpson's Rule approximation (n = 4) ≈ 246.6667

As we can see, the Trapezoidal Rule approximation is slightly greater than the exact value, while Simpson's Rule approximation is less than the exact value.

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The discus thrower accelerates the discus to a speed of 8.12 m/s in a time of 0.094 s.

What is acceleration?

Acceleration is the rate at which an object changes its velocity with respect to time. In other words, it is the measure of how quickly the speed or direction of an object changes.

The final angular velocity of the discus is given by:

\($\omega_f = \dfrac{1.26 \cdot 2\pi}{time\ taken}$\)

The linear velocity of the discus is given by:

\($v = \omega \cdot r$\)

The final angular velocity of the discus is given by:

\($\omega_f = \dfrac{1.26 \cdot 2\pi}{t} = 7.89 \text{ rad/s}$\)

The angular acceleration of the discus is given by:

\($\alpha = \dfrac{2 \cdot 1.26 \cdot 2\pi}{t^2} = 84.2 \text{ rad/s}^2$\)

The time taken to reach the final angular velocity is:

\($t = \dfrac{\omega_f}{\alpha} = 0.094 \text{ s}$\)

Substituting the values of \($\omega$\) and \($r$\), we get:

\($v = \omega_f \cdot 1.03$\)

The linear velocity of the discus is given by:

\($v = \omega_f \cdot r = 8.12 \text{ m/s}$\)

Therefore, the discus thrower accelerates the discus to a speed of 8.12 m/s in a time of 0.094 s.

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Note that  it is important to remember when converting a music file from analog data to digital data to use:

The greater the sample rate, the more snapshots of the audio stream are captured. The audio sample rate, measured in kilohertz (kHz), defines the frequency range sampled in digital audio. under most DAWs, you may change the sample rate under the audio options.

Continuous variables are numerical variables with an endless number of possible values between any two values. A continuous variable can be either numeric or date/time based.

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Answer:

Yes

Step-by-step explanation:

you will multiply numinator and denominator by -1

a= (b-s/-c )-1/-1

a= -b+s/c

a= s-b/c ... addition is commutative. so yes it is equal.

Answer:

Step-by-step explanation:

no triangle

11<4+3 false

Answer:

Take a scale and draw a line of 4 centimetres.

Then again on its opposite side draw 3 cm. The connect final sides. I this way no triangle is Made.

The amplitude of damped oscillatory motion can be expressed as an exponential function.

Non-conservative forces cause damping harmonic oscillators to lose energy. Critical damping quickly restores system equilibrium without overshooting. The equilibrium position will be oscillated through in a system that is underdamped. In comparison to a system that is severely dampened, an overdamped system takes longer to reach equilibrium.

Because we already know that this function is exponential, that sort of function that characterizes the amplitude of damped oscillatory motion is exponential.

y=\(Ae^{\frac{-ct}{2m}cos(w_dt+\phi )\)

y=\(Ae^{\frac{-ct}{2m}\)

gives the amplitude.

so that we can say that amplitude of damped oscillatory motion is exponential.

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