Number of students should be 279, not 278 what did I do wrong?
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Number of students should be 279, not 278 what did I do wrong?
![In [24]:
N import numpy as np
In [53]: N A = np.array([[1, 1], [30, 20]])
B = np.array([288, 5850])
In [54]: N x = np.linalg.inv(A).dot (B)
In [55]: print("(d) Number of teachers =",int (X[ø1))
(d) Number of teachers = 9
In [56]:
N print("(c) Number of students =",int (X[1]))
(c) Number of students = 278
In [ ]: M](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F28e9edbd-39ee-42eb-8637-6e421ca3a7d9%2F2c0beaad-b85a-402c-84d4-9bc7428e3766%2Fcglzwx_processed.png&w=3840&q=75)
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- $cars = array("Volvo", "BMW", "Toyota"); what is cars[0] O Volvo O ToyotaFor an array declartion of int number [25];, what will be the ending index? 0 1 24 25Q2. By applying the concept of array in C language, solve the equation as shown in Figure Q2 below where the values of n is the last digit of student matrix number (e.g. CD12345), and u is the second digit of student matrix number (e.g. CD12345). User need to insert the value in array x[i] series, for example, EE x; = x [0] + x[1] + x[2], where xiis a series of value in data set. n+2 n+3 10+ i V2i f (x) = >. 2x[i]? i=1 i=0 Figure Q2: (x) equation.
- Q2. By applying the concept of array in C language, solve the equation as shown in Figure Q2 below where the values of n is the last digit of student matrix number (e.g. CD12345), and u is the second digit of student matrix number (e.g. CD12345). User need to insert the value in array x[i] series, for example, EE x; = x [0] + x[1]+ x[2],where xri is a series of value in data set. n+2 n+3 10+i V2i f (x) = 2x[i]? i=1 i=0 Figure Q2: (x) equation.int ary[] = {5, 2, 7,3,9,1,6, 8, 4}; Q A: What is the starting index of ary Q B: What is the last index of ary Q C: Write statements to print 2nd value to 7th value of array.DO NOT POST EXISTING ONE: Write a java method called SearchKey that return the indices of the first and the last occurences of an element k in an array.The function should Return [-1,1] in case the element was not found
- ___5___. You are given an array of strings arr. A string s is formed by the concatenation of a subsequence of arr that has unique characters. Return the maximum possible length of s. A subsequence is an array that can be derived from another array by deleting some or no elements without changing the order of the remaining elements. Example 1: Input: arr = ["un","iq","ue"] Output: 4 Explanation: All the valid concatenations are: - "" - "un" - "iq" - "ue" - "uniq" ("un" + "iq") - "ique" ("iq" + "ue") Maximum length is 4. Question is here to solve------.Python Please **Bold is code** Recap of two-dimensional arrays and their numpy implementation import numpy as np my_2d_array = np.array([[1,2],[3,4],[5,6]]) print("This is my_2d_array:") print(my_2d_array) print("This array has shape " + str(my_2d_array.shape) + " as there are " + str(my_2d_array.shape[0]) + " rows and " + str(my_2d_array.shape[1]) + " columns.") print("The entry of the array with row index " + str(1) + " and column index " + str(1) + " has value " + str(my_2d_array[1,1])) 1) In this problem, implement a TwoDArray class that is meant to mimic (some of) the functionality of a two-dimensional numpy array. DO NOT use numpy at any point. 1A) Give the class an __init__ method Make sure that the variable array is a valid input. This means you should a) Make sure that array is a list of lists. and b) Make sure that each of the inner lists has the same length. You do not need to check for anything else. Rise the appropriate error(s) if these conditions are not met. It is up…Initialize two integer arrays, a[6] and b[6]. First print their elements in two rows, and then print them out in two columns. : Initialize the arrays with random integers in the range between 0 & 20, inclusive
- int[] anum= new int[100]; for (int i = 0; i < 50; i++) num[5] = 10; num[55] 100; What is the value at index 10 of the sxray above? OA) O OB) 5 O c) 10 OD) 50write aprogram that inputs a line of text into chae array [100].output the line in alterante upercase letters and lowercase letters.1. What will be output of this Python code: import numpy as np import matplotlib.pyplot as plt x = np.array([1, 2, 3, 4, 5]) y = np.array([4, 2, 1, 3, 7]) plt.scatter(x, y); 2. What will be output of this Python code for the same data as above, from sklearn.linear_model import LinearRegression X = x[:, np.newaxis] model = LinearRegression().fit(x, y) yfit=model.predict(X) plt.scatter(x, y) plt.plot(x, yfit);
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