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A process executes the code fork(); fork(); fork(); The total number of child processes created is 3 4 7 8

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Arrays in Java can be used to implement data structures like stacks and queues. . true or false

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An electromagnetic wave has a period of 1.00*10-18 s. In what portion of the electromagnetic (EM) spectrum does this wave lie?

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A person's BAC (blood alcohol concentration), is effected by all of these EXCEPT body weight body fat gender eating

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In the picture below you can see two methods a wind direction is measured. The first method (method A) designates the direction of a wind by specifying the angle at which it blows measured anticlockwise from the East. In contrast, the second method (method B) indicates the angle from which the wind is blowing, measured clockwise from the North. Both methods utilise values within the range of 0° to 360°. 1) Derive a piecewise formula expressing $\theta_A$ in terms of $\theta_B$. ii) Draw a graph depicting the angle $\theta_A$ as a function of the angle $\theta_B$.

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(1 point) Let $f(x, y) = \sqrt{49 - x^2 - y^2}$. Find the equation of the tangent plane of the graph $z = f(x, y)$ at the point $(3, 2, f(3, 2))$. $z =$ $x +$ $y +$ Now let $f(x, y) = e^{4xy}$. Find the equation of the tangent plane of the graph $z = f(x, y)$ at the point $(3, 2, f(3, 2))$. $z =$ $x +$ $y +$

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Instructions Write a PHP script that uses regular expressions to validate that a date is in the proper format for inserting into a MySQL database. For the sake of this assignment, let's say that valid dates should: • be in the format YYYY-MM-DD • be between the year 1900 and 2023 • have a month between 01 and 12 • have a day between 01 and 31 Note: it's okay if a month has an invalid day at this point (e.g., 2010-02-30 should still be a valid date with your regular expression, but 2010-02-47 is not). Create an array to store at least 4 valid dates and at least 3 invalid dates (feel free to use the ones in the sample below). Loop through the array and, using the preg_match function, determine whether the date is valid or not and print an appropriate statement. Here is some sample output: 2020-01-19 is a valid date. 0000-01-01 is not a valid date. 1801-10-08 is not a valid date. 1900-03-02 is a valid date. 2023-12-17 is a valid date. 2021-13-09 is not a valid date. 2010-04-01 is a valid date. 2023-1-2 is not a valid date. Remember that preg_match returns 0 if the string does not match the pattern and 1 if it does. Make use of https://regex101.com/ to test your pattern, if you'd like.

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3. Help me with this Which of the following functions are solutions of the differential equation $y'' + 10y' + 25y = 0$? A. $y(x) = -5xe^{5x}$ B. $y(x) = 0$ C. $y(x) = e^{5x}$ D. $y(x) = e^{-5x}$ E. $y(x) = -5x$ F. $y(x) = xe^{-5x}$ G. $y(x) = x^2e^{-5x}$

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Question 1 The white matter of the spinal cord contains ? myelinated nerve fibers only ? myelinated and unmyelinated nerve fibers ? unmyelinated nerve fibers only ? cell bodies

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Purple Company acquires an office building at a cost of $1,000 on January 1, 2021. The building expects to have a 30-year useful life with residual value of $100 at the end of the estimated useful life. The asset is accounted for under the revaluation model (proportional method) and revaluations are carried out every year. The company uses the straight-line method to record depreciation and both the useful life and residual value remain unchanged throughout revaluation. Also assume that the company always adjusts for depreciation expense difference under the revaluation model and the cost model. The fair value of the office building is appraised at $1,100, $900 and $1,000 on December 31, 2021, 2022 and 2023, respectively. Determine the amount for “Impairment loss/Recovery of impairment loss” to be reported on the Income Statement on December 31, 2022. Round your answer to the nearest dollar if necessary. (Hint: if it is impairment loss, please use a negativesign for your answer) (7 marks)

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alison h.