Which pair of measurements is not equivalent?

the answers are

- 24 feet, 8 yards
- 24 inches, 2 feet
- 10 feet, 120 inches
- 3 miles, 15,480 feet

What are the possible rational zeros of [tex]f(x) = x^4+2x^3-3x^2-4x+18[/tex]

Successful implementation of a new system is based on three independent modules. module 1 works properly with probability 0.96. for modules 2 and 3, these probabilities equal 0.95 and 0.90. compute the probability that at least one of these three modules fails to work properly.

Using elimination, what is -4x+2y=-12 4x+8y=-24