The multipliers of this system of equations have been determined to create opposite terms of the x-variable.
8(-3/4x+4/5y=14) -> -6x+32/5y=112

3(2x+7/10y=-9) -> 6x+21/10y=-27

what is the value of y?
a. -10
b. -8
c. 8
d. 10

Follow these steps using the algebra tiles to solve the equation −5x + (−2) = −2x + 4. 1. add 5 positive x-tiles to both sides and create zero pairs. 2. add 4 negative unit tiles to both sides and create zero pairs. 3. divide the unit tiles evenly among the x-tiles. x =

Suppose that 3% of all athletes are using the endurance-enhancing hormone epo (you should be able to simply compute the percentage of all athletes that are not using epo). for our purposes, a “positive” test result is one that indicates presence of epo in an athlete’s bloodstream. the probability of a positive result, given the presence of epo is .99. the probability of a negative result, when epo is not present, is .90. what is the probability that a randomly selected athlete tests positive for epo? 0.0297

An octagonal prism has jow many lateral faces?