Please complete the 9 easy practice questions below

Math 120 Hw 14: Problem 1 (1 point) Calculate the cross product assuming that u x w = (-2, -1, 8) (-u - 4w) X W =Math 120 Hw 14: Problem 2 (1 point) If a = i+ lj + k and b = i + 8j + k, find a unit vector with positive first coordinate orthogonal to both a and b. + + kMath 120 Hw 14: Problem 3 (1 point) Find two unit vectors orthogonal to a = (2, 2, 2) and b = (-4, -1, -2) Enter your answer so that the first non-zero coordinate of the first vector is positive. First Vector: Second Vector:Math 120 Hw 14: Problem 4 (1 point) Find two unit vectors orthogonal to a = (5, -2,0) and b = (-1, 0, 4) Enter your answer so that the first vector has a positive first coordinate First Vector: Second Vector:Math 120 Hw 14: Problem 8 (1 point) Use the geometric definition of the cross product and the properties of the cross product to make the following calculations. (a) ((3 + k) x ]) x k = (b) ( i + ] ) x (i x ] ) = (c) 5k x (k + 3) = () (i + 3) x (i - 3) = 0Math 120 Hw 14: Problem 9 (1 point) If a = i + j + 5k and b = i+ j + 2k Compute the cross product a x b. axb + kMath 120 Hw 14: Problem 10 (1 point) You are looking down at a map. A vector u with | u) = 2 points north and a vector v with ( v| = 5 points northeast. The crossproduct u x v points: A) south B) northwest C) up D) down Please enter the letter of the correct answer: The magnitude Ju x v| =Math 120 Hw 14: Problem 12 (1 point) Suppose : {3, 3, 3). Then (112: '4) makes an obtuse angle v with E (3:41: '1) makes an obtuse angle v 1with E (510-6l makes a right angle v With E (4: 313) makes an obtuse angle v. with E an obtuse angle a right angle an acute angle Note: In order to get credit for this problem at} answers must be correct. Math 120 Hw 14: Problem 13 (1 point) Suppose v = (-5, -1, 5). Then (10, 2, -10) is parallel V to u (1, 5, 2) is perpendicular v to (14, 20, 18) is parallel V to u (2, -4, -1) is neither V to u parallel Note: In order to get credit for this problem all answers must be correct. perpendicular neither Preview My Answers Submit Answers