resolve the following systems to the cramer rule: (1.0 each)
a) {
2x − y + 4z = 3
x − 3y + 2 z = −6
3x − y + 5z = 4
b) {
x + 3y + z = 12
3x − 2y + z = 1
2x − y − z = 0

Issof claims that the scale factor is 1/2. which statement about his claim is correct

Which of these equations, when solved, gives a different value of x than the other three? a9.1 = -0.2x + 10 b10 = 9.1 + 0.2x c10 – 0.2x = 9.1 d9.1 – 10 = 0.2x

The position of a moving particle is given by the position function: f(t)=-9t-t^2-0.2t^3+0.1t^4 a. at what time does the particle reverse direction? b. when is the displacement positive? (round one decimal place and answer in interval notation) c. when is the displacement negative? (round one decimal place and answer in interval notation) d. when is the particle’s acceleration positive? (round one decimal place and answer in interval notation) e. when is the particle’s acceleration negative? (round one decimal place and answer in interval notation)