Compute the least-squares error associated with the least-squares solution x of Ax = b. 1 -4 4 580 - 1 A = 4 327 ,X = - 3 26 9 327 The least-squares error is (Type an exact answer, using radicals as needed.)

9. The x-intercepts of the function y =x? +16x - 36 are a. - 2 and - 18 b. - 2 and 18 c. 2 and – 18 d. 2 and 18 10 WhicL

A rancher has 120 yards of fence with which to enclose three sides of a rectangular field (the fourth side is a river and will not require fencing). Find the dimensions of the field with the largest possible area. (For the purpose of this problem, the width will be the smaller dimension (needing two sides); the length with be the longer dimension (needing one side).) length width= = yards yards What is the largest area possible for this field? area = yards-squared Enter your answers as numbers. If necessary, round to the nearest hundredths.

find the Bezout coefficients and write the gcd (243, 715) a s a linear combination of 243 and 715.

must solve all parts for upvote

The solution of the quadratic equation 5x2 + 4x + 1 = 0 are O -4+ V6 10 -4 + Vī 10 -4+ v6 15 -4+ V6 20 -4+v-4 10

Let u = -7 5 -6 , V = -7 7 equation 5-2 -6 6 7 -2 6 X₁ x2 X₁ X2 (Simplify your answers.) and w= - 14 -11 - 12 - 14 - 11 . It can be shown that -5u-7v-w=0. Use this fact (and no row operations) to find x₁ and x₂ that satisfy the - 12