[3] 37 Let A = Write 2A. Is det(2A) equal to 2det(A)?

X-4 J3(x+スナ) 2

Let R represent the number of people in a town who have recovered from an illness d days after the beginning of the infection. for d 10 3d R(d) = { 30 a. Find R(7)= b. Find R(20)=.

The expression r = x²y-¹2-2 (xy)-42-3 S= -4 ·) * = x³y²z² where: 3 and t =

Find the value of the expression: x²-(a+b)x+ab x²−(a+c)x+ac where a = 1.4, b = 3.9, c = 5.3 as xa. Give your answer to two decimal places.

Find (u + v) ∙ (2u − v) when u ∙ u = 4, u ∙ v = −5, and v ∙ v = 10.