What is the meaning of "concatenation is associative"?

Answer: 44 degrees

Step-by-step explanation: 59+77+x=180

x=44

Answer:

69%

Step-by-step explanation:

Using the formula exactly for this situation:

((((6^2 * 10) + sqrt((5000*3) - 600)) / 4! ) * 3.5 ) - log(1 * 10^11) =

69

Answer:

D. rectangles

Step-by-step explanation:

Perpendicular is when they cross but the base isn't perpendicular

Parallel is when two lines never touch, but in the base of a prism there are lines that touch

Intersecting is when two or more lines meet and cross over each other

Find x in the given quadrilateral.

X

120°

80°

60°

a. 100°

b. 120°

c. 150°

d. 180°

\(\boxed{\sf A.100} \)

\(\begin{gathered}\rightarrow\boxed{\sf 120+80+60+x=360 } \\ \rightarrow\boxed{\sf x=360-260 } \\ \rightarrow\boxed{\sf x=\blue1\blue0\blue0 }\end{gathered} \)

To find x in quadrilaterals, Firstly let's say the given quadrilaterals, So the result is 360, then subtract it by 260 maybe when you say 3 numbers it the result is 260.Therefore the answer is 100

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Answer: A 100

Step-by-step explanation:

120+80+60+x=360

x=360-260

x=100

Answer:9oooooooooooooooooooooooooooooooooooo

Step-by-step explanation:

Answer:

The margin of error is 370.8.

The 90​% confidence interval for the population mean is between $167.2 and $908.8

The correct interpretation is that we are 90% sure that the true mean price for all cellphones in within the interval end-points, so option B.

Step-by-step explanation:

The first step to solve this problem is finding how many degrees of freedom, we have. This is the sample size subtracted by 1. So

df = 6 - 1 = 5

90% confidence interval

Now, we have to find a value of T, which is found looking at the t table, with 5 degrees of freedom(y-axis) and a confidence level of \(1 - \frac{1 - 0.9}{2} = 0.95\). So we have T = 2.0150

The margin of error is:

M = T*s = 2.0150*184 = 370.8.

In which s is the standard deviation of the sample.

The lower end of the interval is the sample mean subtracted by M. So it is 538 - 370.8 = $167.2

The upper end of the interval is the sample mean added to M. So it is 538 + 370.8 = $908.8

The 90​% confidence interval for the population mean is between $167.2 and $908.8

The correct interpretation is that we are 90% sure that the true mean price for all cellphones in within the interval end-points, so option B.

The value of the function F(3) will be 1/125. It is obtained by putting the value 3 in the place of x.

A connection between independent variables and the dependent variable is defined by the function. Functions help to represent graphs and equations.

A function is represented by the two variables one is dependent and another one is an independent function. The relation between them is shown as y if dependent and x is the independent variable.

F(x)=(1/5)ˣ

F(3)=(1/5)³

F(3)=1/125

Hence, the value of the function F(3) will be 1/125.

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Answer:

See below ~

Step-by-step explanation:

Part A

Part B

Answer:

-3x+16

Step-by-step explanation:

(6x+7)-(9x-9)

Collect like terms

6x-9x = -3x

7+9= 16

answer is -3x+16

Answer:

15x + 16

Explanation:

Basically whatever you are solving for in this question, the answer will be the exact same

The equations that has the solution x = all real numbers is 5(3x)+ 7x = 3x + 15 - x and 5(3x) + 7x = 3x + 10 - x,

Algebraically speaking, an equation is a statement that shows the equality of two mathematical expressions. For instance, the two equations 3x + 5 and 14, which are separated by the 'equal' sign, make up the equation 3x + 5 = 14.

A formula that expresses the connection between two expressions on each side of a sign. Typically, it has a single variable and an equal sign.

Here given equations,

5(3x) + 6x = 3x + 15 + 2x

15x + 6x = 3x + 15 + 2x

15 x + 6x - 3x -2x = 15

16 x = 15

x = 15/16

5(3x).+ 7x = 3x + 15 - x

15 x + 7x = 3x + 15 - x

15 x + 7x - 3x + x = 15

22x - 3x + x = 15

20 x = 15

x = 15/20

x = 3/4

5(3x) + 7x = 3x + 10 - x

15x + 7x - 3x + x = 10

20x = 10

x = 10/20

x = 1/2

5(3x) + 7x = x + 15 - 3x

15x +7x - x + 3x = 15

24x = 15

x = 15/24

x = 5/8

Therefore the equations that has the solution x = all real numbers are :

5(3x).+ 7x = 3x + 15 - x and 5(3x) + 7x = 3x + 10 - x .

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With the given equation, the value of m + k is equal to 656 as K is 648 and the value of is 8

We have been given the equation: x² - 4x - 9 = 0

For finding the root, we need to, x = 8² ± 4AC/2A

When we solve for the following equation, we get: x = -10, 26

now we have been given root (m + √K/2) = 26

= (m/2) + (√K/2) = 26

= √2m + √K = 26√2 ......(1)

= m - √K/√2 = -10

= √2m - √K = -10√2 ......(2)

From equation (1) and (2), we get:

2√2m = 16√2

m = 8

therefore, √K = 26√2 - √2m

√K = 18√2

K = 2 × 18² = 648

Now, m + K = 648 + 8 = 656

Therefore, with the given equation, the value of m + k is equal to 656 as K is 648 and the value of is 8

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The unit rate of 24t = 98 is A. 24 feet per year.

Unit rate is the rate of increase or decrease of a unit of item

Now, since a 984-foot tree has grown at a constant rate each year. Since we have the equation 24t = 984, wheret is the age of the tree in years.

To determine the unit rate, we compare it with the function y = mx where m = gradient

Now, the gradient is the rate of change of y per unit of x.

Now, comparing y = mx with 24t = 984,

Since m = 24 which is the gradient which is also the unit rate.

So, the unit rate of 24t = 98 is A. 24 feet per year.

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Answer:

+ 0.5 then 1.5 n

Step-by-step explanation:

=========================================================

Explanation:

The goal is to get that 1755 degree angle between 0 and 360, so we can refer to the unit circle later.

Subtract off 360 from this until we get to that target

Or a shortcut could be

The angles of 1755 degrees and 315 degrees are coterminal. They point in the same exact direction which is directly southeast in quadrant IV.

Now use the unit circle (see below) to find that

Dividing those two items and simplifying gets us

tan(315) = sin(315)/cos(315) = -1

Then we go from tan(315) = -1 to tan(1755)  = -1

Answer:

-3

Step-by-step explanation:

-3 is 12 less than its square. Implies that 9 - 12 = -3.

Answer:

50.75

Step-by-step explanation:

We have:

\(E[g(x)] = \int\limits^{\infty}_{-\infty} {g(x)f(x)} \, dx \\\\= \int\limits^{1}_{-\infty} {g(x)(0)} \, dx+\int\limits^{6}_{1} {g(x)\frac{2}{x} } \, dx+\int\limits^{\infty}_{6} {g(x)(0)} \, dx\\\\= \int\limits^{6}_{1} {g(x)\frac{2}{x} } \, dx\\\\=\int\limits^{6}_{1} {(4x+3)\frac{2}{x} } \, dx\\\\=\int\limits^{6}_{1} {(4x)\frac{2}{x} } \, dx + \int\limits^{6}_{1} {(3)\frac{2}{x} } \, dx\\\\=\int\limits^{6}_{1} {8} \, dx + \int\limits^{6}_{1} {\frac{6}{x} } \, dx\\\\\)

\(=8\int\limits^{6}_{1} \, dx + 6\int\limits^{6}_{1} {\frac{1}{x} } \, dx\\\\= 8[x]^{^6}_{_1} + 6 [ln(x)]^{^6}_{_1}\\\\= 8[6-1] + 6[ln(6) - ln(1)]\\\\= 8(5) + 6(ln(6))\\\\= 40 + 10.75\\\\= 50.74\)

The value of cos(45°) is √2/2. The correct answer choice is D. √2.

In the given diagram, the angle labeled as 45° is part of a right triangle. To find the value of cos(45°), we need to determine the ratio of the adjacent side to the hypotenuse.

Since the angle is 45°, we can assume that the triangle is an isosceles right triangle, meaning the two legs are congruent. Let's assume the length of one leg is x. Then, by the Pythagorean theorem, the length of the hypotenuse would be x√2.

Now, using the definition of cosine, which is adjacent/hypotenuse, we can substitute the values:

cos(45°) = x/(x√2) = 1/√2

Simplifying further, we rationalize the denominator:

cos(45°) = 1/√2 * √2/√2 = √2/2

Therefore, the value of cos(45°) is √2/2.

The correct answer choice is D. √2.

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Answer:

Are you serious

Step-by-step explanation:

Answer:

I have no idea what this is supposed to mean.

The conditions are not met, then alternative methods, such as a two-sample t-interval or non-parametric methods, may be more appropriate.The use of a two-sample z-interval for a difference in population proportions is appropriate when the following conditions are met:

The samples are independent of each other.

The samples are both random and representative of their respective populations.The sample sizes are large enough such that the number of successes and failures in each sample are both greater than or equal to 10.The populations from which the samples are drawn are both large relative to the sample sizes.

If these conditions are met, then the sampling distribution of the difference in sample proportions can be approximated by a normal distribution, and a two-sample z-interval can be used to estimate the difference in population proportions with a certain level of confidence. If the conditions are not met, then alternative methods, such as a two-sample t-interval or non-parametric methods, may be more appropriate.

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Question :-Which of the following indicates that the use of a two-sample z-interval for a difference in population proportions is appropriate?

Two populations of interest exist.

The variable of interest is categorical.

The intent is to estimate a difference in sample proportions.

According to the given question, Alice should use this equation f(t) = \(24,000(0.945)^t\) to represent the value of the car after t years.

Depreciation is the expected decrease in the value of fixed assets over the course of a fiscal year. For physical assets like real estate, machinery, vehicles, and other items, large lump sum acquisitions are made.

The equation\(f(t) = 24,000(0.945)^t\) represents the value of the car after t years, where 0.945 represents the remaining value of the car after one year of depreciation at a rate of 5.5%.

To calculate the value of the car after two years, for example, we would substitute t = 2 into the equation:

f(2) = \(24,000(0.945)^2\)

f(2) = 24,000(0.893025)

f(2) ≈ 21,433.80

Therefore, the value of the car after two years would be approximately $21,433.80.

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Answer:

7/6 cups

Step-by-step explanation:

Mug is 2/7 full

Amount of water in the mug = 1/3 cup

Assume the full capacity of the mug = m

Then the current capacity of water in mug = (2/7) of m = (2/7)m

Current capacity of water in mug is equivalent to 1/3 cup of water

Hence,

(2/7)m = 1/3

2m/7 = 1/3

Cross multiply

(2m * 3) = 7 * 1

6m = 7

m = 7/6

m = 1 1/6 cups

Answer:

yes

Step-by-step explanation:

Answer:

A) not well defined

Step-by-step explanation:

A set is said to be a well-defined set when we can clearly state whether something belongs to that set or not without any trace of ambiguity.

This implies that based on the information provided, we can easily decide on the members of a well defined set. A set that is not well defined carries some level of ambiguity regarding what and what should be part of the set.

In this case, 'sizeable profits' was not clearly defined. There ought to have been a threshold of profit defined as sizeable (e.g profit of $ 1,200,000 and above).

Since there is no such definition of 'sizeable profits', the set is not well defined.

The five-period moving average forecast for period 7 is 10.7.The five-period moving average forecast for period 7 can be calculated as:MA5,7 = 0.5*8 + 0.3*13 + 0.1*11 + 0.05*12 + 0.05*10 = 10

The five-period moving average forecast for period 7 is calculated using a weighted average of the most recent five periods. The weights represent the relative importance of each period in the calculation. The formula is: MA5,7 = 0.5*X6 + 0.3*X5 + 0.1*X4 + 0.05*X3 + 0.05*X2Where MA5,7 is the five-period moving average forecast for period 7 and X6, X5, X4, X3, and X2 are the data for periods 6, 5, 4, 3, and 2 respectively.In this example, the data for each period is as follows:

X2 = 10 X3 = 12 X4 = 11 X5 = 13 X6 = 8 .The five-period moving average forecast for period 7 can be calculated as:MA5,7 = 0.5*8 + 0.3*13 + 0.1*11 + 0.05*12 + 0.05*10 = 10.7Therefore, the five-period moving average forecast for period 7 is 10.7.

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Answer:

20 - i

Step-by-step explanation:

In complex number addition/subtraction, add the imaginary part and add the real part separately.

The error is while adding imaginary part, you have to combine the coefficients of the imaginary numbers. So, -3 +2 will give us -1. So, the result is -i.

16  - 3i + 4+  2i = 16 + 4  -3i + 2i

                         = 20 - i

Answer:

20 - i

Step-by-step explanation:

The error made during second step:

When adding or subtracting expression, we add or subtract like terms.

(16 - 3i) + (4 + 2i) get rid of parenthesis

16 - 3i + 4 + 2i add/subtract like terms

20 - i (the mistake is made here, instead of "i" they typed i^2)

Answer:

0 because if all the mice ran away then they would be gone