Answer:
Step-by-step explanation:
Polynomials in the fourth degree are called quartic equations. In solving the roots of polynomials, there are techniques available. For quadratic equations, you use the quadratic formula. For cubic equations, you use the scientific calculator. But for quartic equations and higher, it is very complex. The method is very lengthy and can get very messy because you introduce a lot variables. So, I suggest you do the easiest method to estimate the roots.
Graph the equation by plotting arbitrary points. The graph looks like that in the figure. The points at which the curve passes the x-axis are the solution which are encircled in red.In approximation, the rational roots or zero's are
-3.73, -1, -0.28 and 2.
Answer:
Step-by-step explanation:
levels of organic pollutants with 99.7% accuracy
levels of volatile solvents with 99.92% accuracy
levels of chlorinated compounds with 89.7% accuracy
samples:
60% contaminated with organic pollutants
27% contaminated with volatile solvents
13% contaminated with traces of chlorinated compounds
a) probability that the test will signal?
P = 0.997*0.6 + 0.9992*0.27 + 0.897*0.13 = 0.5982
+ 0.269784 + 0.11661 = 0.984594 = 98.45%
b) If the test signals, the probability that chlorinated compounds are present?
P = 0.897*0.13/0.984594 = 0.11661/0.984594 = 0.1184346035 = 11.84%
Answer:
3/5x+1/4=34
Step-by-step explanation:
hope this helps