simplify the expression n^-9×.n^0/ n-4​

Step-by-step explanation:

hope this help have a great day

COPYING IS NOT AT ALL GOOD MY BOY ! TRY TO CHANGE THAT HABIT

y = 2x^2 - 4

Add both side 4

y + 4 = 2x^2 - 4 + 4

y + 4 = 2x^2

Divide both sides by 2

( y + 4 ) ÷ 2 = 2x^2 ÷ 2

y + 4 / 2 = x^2

x^2 = y + 4 / 2

x = + √(y+4/2) Or x = - √(y+4/2)

Thus the second option is the correct answer.

One mole of nitrogen gas at STP (standard temperature and pressure) occupies a volume of 22.4 liters.

What is gas volume?

The volume of the a system is a crucial extensive criterion for describing it's own thermodynamic state in thermodynamics. The game's volume per unit of mass is known as the fixed volume, an intensive property. Volume depends on state and on other thermodynamic characteristics like pressure and temperature. The ideal gas law, for instance, relates the volume of an ideal gas to its pressure and temperature.

A system's physical volume might or might not match the control volume used it to study the system.

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The purpose of Lend-Lease was to provide military aid to countries fighting against the Axis powers during set  World War II.

The purpose of Lend-Lease was to provide military aid to countries fighting against the Axis powers during World War II. The program was enacted by the United States in 1941 and allowed the US to provide war materials to its allies without requiring repayment. It was a major factor in the Allied victory, as it allowed the US to supply its allies with much needed war material and resources. The US provided a variety of goods, including food, oil, weapons, and tanks. It also supplied the Soviet Union with millions of tons of military equipment and supplies. Lend-Lease was instrumental in helping the Allies win the war, as it allowed them to gain a huge advantage over the Axis powers by providing essential supplies and resources.

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Answer:

2.07

Step-by-step explanation:

Answer:

2.07

Step-by-step explanation:

The reason for that is if the thousandths place was greater that 5 it will change the 7 to an 8

so when rounding the number will change if it is greater than 5

if  less than it will stay the same and the rest will become 000 after it

2.07000 but  an easier way to say it is 2.07

Answer:

120

Step-by-step explanation:

just put the triangle in the empty space and you get a rectangle

12×10=120

Answer:

A

Step-by-step explanation:

-0.2 translates to -2/10 and then simplifies to -1/5 so you would minus it from the bigger number which is 3/5 because its positive.

Answer: the rule is 4

Step-by-step explanation:32+4=36 and so on into the pattern.

The pattern appears to be an arithmetic sequence with a common difference of 4.

To generate the sequence, you start with the first number, which is 32, and then add 4 to get the next number, which is 36. Then, you add 4 again to get the third number, which is 40, and so on. Therefore, the next number in the sequence would be 48, obtained by adding 4 to the last number, which is 44.

So the complete sequence would be:

32, 36, 40, 44, 48, ...

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Answer: M=2

y-intercept = (0,7)

x-intercept = (-7/2,0)

Step-by-step explanation:

The slope is already given in the equation, which is 2

M=2

y-intercept = (0,7)

x-intercept = (-7/2,0)

Solution

We want to find the area of the triangle given te sides

b = 20

a = 29

c = 21

Note: Hero formula for calculating the Area of a Triangle

We will first find S

To find the Area

Therefore, the area is

It is sampled at a rate 25% higher than the Nyquist rate and quantized into L levels. The maximum acceptable error in sample amplitudes is limited to 0.1% of the peak signal amplitude.

To sketch the amplitude spectrum of g(t), we observe that sinc functions centered at 16 kHz and 10 kHz contribute amplitudes of 16x10³ and 10x10³, respectively, while the cosine component centered at 30 kHz has an amplitude of 20x10³. The horizontal axis represents the frequency (f).

The amplitude spectrum of the sampled signal, within the range -50 kHz to 30 kHz, will exhibit replicas of the original spectrum centered at multiples of the sampling frequency. The amplitudes and frequencies should be labeled according to the replicated components.

The minimum required bandwidth for binary transmission can be determined by considering the highest frequency component in g(t), which is 30 kHz. Therefore, the minimum required bandwidth will be 30 kHz.

For M-ary multi-amplitude signaling within a channel bandwidth of 50 kHz, we need to find the minimum value of M. It can be determined by comparing the available bandwidth with the required bandwidth for each amplitude component of g(t). The minimum M will be the smallest number of levels needed to represent all the significant amplitude components without violating the bandwidth constraint.

To minimize M, we need to select a pulse shape that achieves the narrowest bandwidth while maintaining an acceptable level of distortion. Different pulse shapes can be considered, such as rectangular, triangular, or raised cosine pulses.    

If a raised cosine pulse is used, the roll-off factor determines the pulse shape's bandwidth efficiency. The roll-off factor is defined as the excess bandwidth beyond the Nyquist bandwidth. The required M can be calculated based on the available channel bandwidth, the roll-off factor, and the distortion tolerance.

When using delta modulation with a sampling rate of five times the Nyquist rate, the number of levels (L) and corresponding bit rate can be determined by considering the quantization error and the maximum acceptable error in sample amplitudes. The bit rate will be determined based on the number of bits required to represent each level and the sampling rate.  

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Answer:

8 days

Step-by-step explanation:

61x=450

divide each side by 61

then x=7.3 but because of the context you have to round up to 8

also the 20 is just there and can be included in solving but they cancel out so i left it out

Answer:

Step-by-step explanation:

IN EXPONENTIAL NOTATION THAT IS 10^4

This is actually pretty simple, so i think you should catch on fast, so basically, the opposite of 59 is -59. so basically, just add a negative on there and your all set. If its negative, switch it to positive. Hope it helped!

Answer:

16.67%, 50%, 16.67%

Step-by-step explanation:

There are 6 different ways that the 4 kids can be paired up, so any one of the ways is rounded to 16.67%. So a and c are 16.67%

Not Zack is any pairing that doesn't have a Z. That is 3 out of 6, which is 50%.

100 mph going there, 50 coming back

Using a calculator, we can calculate sin 84° right away by typing it there and the answer would be:

sin 84° = 0.9945218954

Since the question is asking us to round it to the nearest hundredth, meaning two places after the decimal, the answer will be 0.99.

Solution

we are given

(a). P(x) / Q(x)

(b). P(x) x Q(x)

Usando un sistema de ecuaciones, se encuentra que Rocío y Rafael tienen 23 barcos y 34 aviones.

Para el sistema, consideramos que:

Situviéramos once barcos más, tendríamos el  mismo número de barcos y aviones, o sea:

\(x + 11 = y\)

\(y = x + 11\)

Pero si tuviéramos  doce aviones más, tendríamos el doble de aviones que de barcos, o sea:

\(y + 12 = 2x\)

De el primer ecuación, \(y = x + 11\), por eso:

\(y + 12 = 2x\)

\(x + 11 + 12 = 2x\)

\(x = 23\)

\(y = x + 11 = 23 + 11 = 34\)

Rocío y Rafael tienen 23 barcos y 34 aviones.

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Answer:

The second one

Step-by-step explanation:

Approximately 21.5 out of 50 randomly selected U.S. smartphone owners will have attempted to limit their cell phone use in the past.

In the Deloitte survey conducted in 2017, it was found that 0.43 of U.S. smartphone owners had made an effort to limit their phone use. This percentage serves as an estimate for the entire population of U.S. smartphone owners.

To determine the approximate number of smartphone owners who have attempted to limit their cell phone use in a sample of 50, we multiply the sample size (50) by the estimated percentage (0.43). This calculation gives us 21.5, indicating that around 21.5 out of the 50 randomly selected U.S. smartphone owners will have tried to limit their phone use in the past.

The calculation is based on the assumption that each pick from the sample is independent, meaning that the behavior of one smartphone owner does not influence the behavior of another. This assumption allows us to use the estimated percentage from the survey to estimate the number of smartphone owners in the sample who have attempted to limit their phone use.

It's important to note that this calculation provides an approximation and not an exact number. The actual number of smartphone owners in the sample who have attempted to limit their phone use may vary. However, this estimation gives us a reasonable expectation based on the data available.

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Answer:

The final/ last one's hypotenuse is the irrational one. The root there is NOT a perfect square.

Step-by-step explanation:

The density of an object is 10490kg/m^3.

Density is like rate. It tells you how much of a thing is available for each unit other thing which contains the first thing.

Density = (Total amount available)/(total space which contains that amount)

Given;

The mass of object= 73,430 kilograms

The volume of object= 7m^3

Now

D=mass/volume

D=73430/7

D=10490

Therefore, the density will be 10490kg/m^3.

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1. D = (4,3)

2. E = (1.7, 2)

3. Triangle ADE is a dilation of triangle ABC by a scale factor of 2 using A as the center.

To solve for the graphed ABD triangle,

1.  Point D

Length of AB = 9

AD : DB = 1 : 2

This means that the distance from point A to point D is one-third of the length of segment AB (since 1/3 + 2/3 = 1).

To find the length of AD, we multiply the length of AB by the ratio of AD to DB, which is 1:2. So,

AD = 1/3 x 9 = 3

To find the coordinates of point D, we can use the fact that point D is on segment AB and partitions it in a 1:2 ratio.

D = (4,3)

2. The midpoint formula states that the coordinates of the midpoint of a line segment with endpoints (x1, y1) and (x2, y2) are:

((x1 + x2)/2, (y1 + y2)/2)

Using this formula, we can find the coordinates of the midpoint of the line segment connecting points C and A:

Midpoint of CA = ((6 + 1)/2, (9 + 3)/2) = (3.5, 6)

distance(CE) = (1/3) x distance(CA)

We can compute the distance between points C and A using the distance formula:

distance(CA) = sqrt((6 - 1)^2 + (9 - 3)^2) = sqrt(61)

So, the distance from point C to point E is:

distance(CE) = (1/3) x sqrt(61)

Therefore, we can express the coordinates of E as:

((1/3)  x  x2 + (2/3)  x  x1, (1/3)  x  y2 + (2/3) x y1)

where (x1, y1) = (6, 9) is the coordinate of C, (x2, y2) = (1, 3) is the coordinate of A, and we have multiplied the coordinates of A by 1/3 and the coordinates of C by 2/3, since E is two-thirds of the way from C to A.

Plugging in the values, we get:

E = ((1/3)*1 + (2/3)*6, (1/3)*3 + (2/3)*9) = (1.7, 2)

Therefore, the coordinates of point E are (1.7, 2).

3. Triangle ADE and ABC are similar triangles and congruent to each other by a scale factor of 2

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The probability that the sample mean would be greater than 132.2 millimeters is approximately 0.0179.

To calculate the probability, we will use the Central Limit Theorem, which states that the distribution of sample means approaches a normal distribution as the sample size increases.

Given:

Mean diameter of steel bolts (μ): 131 millimeters

Standard deviation of steel bolts (σ): 7 millimeters

Sample size (n): 31

Sample mean (x): 132.2 millimeters

To calculate the probability, we first standardize the sample mean using the formula for the z-score:

z = (x - μ) / (σ / √n)

Substituting the values:

z = (132.2 - 131) / (7 / √31) ≈ 1.546

Next, we need to find the area under the standard normal distribution curve to the right of the z-score. We can look up this value in a standard normal distribution table or use a calculator to find the corresponding probability.

The probability that the sample mean would be greater than 132.2 millimeters is equal to the area under the standard normal curve to the right of the z-score of 1.546.

Using a standard normal distribution table or calculator, we find that this probability is approximately 0.0179.

The probability that the sample mean would be greater than 132.2 millimeters is approximately 0.0179, or 1.79%. This means that there is a relatively small likelihood of randomly selecting a sample of 31 steel bolts with a mean diameter greater than 132.2 millimeters, assuming the population mean diameter is 131 millimeters and the standard deviation is 7 millimeters.

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The correct domain restriction that ensures f(x) has an inverse relation that is also a function is 0 ≤ x ≤ 2π.

A function that "undoes" the effect of another function, such as f(x), is said to have an inverse function. More specifically, the inverse function f inverse (x) translates elements of B back to elements of A if f(x) maps elements of A to elements of B.

In other words, (a,b) is a point on the graph of f(x), and (b,a) is a point on the graph of f inverse (x) if (a,b) is a point on the graph of f(x). In other words, the domain of f inverse(x) is the range of f(x), and vice versa. The domain and range of f(x) and f inverse(x) are interchanged.

Given the function of the graph is f(x) = cos x.

Now, cos x oscillates between -1 and 1, with a cycle of 2π.

To obtain the inverse relation we need to find an one to one specific interval.

The complete cycle is obtained for [0, 2π], thus giving the required specific interval.

Hence, the correct domain restriction that ensures f(x) has an inverse relation that is also a function is 0 ≤ x ≤ 2π.

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Answer:

56°

Step-by-step explanation:

call the unknown side length L.

then 5² + L² = 9²

L² = 9² - 5²

    =81 - 25

    = 56

L =√56

(sin x)/√56  = (sin 90)/9

sin x = (√56 X sin 90)/9 = √56 /9

x = sin^-1 (√56 / 9)

  = 56.25°

  = 56° to nearest degree

Answer:

y=5/4x-11

Step-by-step explanation:

tenemos un punto (4,-6) y una pendiente equal a 5/4.

usa la ecuación y=mx+b (m es la pendiente, b es el y interceptar)

porque sabemos la pendiente es 5/4, ahora mismo la ecuación es:

y=5/4x+b

en el punto, x=4, y=-6

podemos sustituir los números en la fómula para resolver b

-6=4(5/4)+b

-6=5+b

-11=b

entonces,

la ecuación de la recta es y=5/4x-11

(¡lo siento mi español no es perfecto!)