999.224
Step-by-step explanation:
Expected value = Summation of (x•px)
px is addressed as pdf (probability distribution function)
x px. x•px
1. 1/3125. 1/3125
20. 4/625. 16/125
160. 32/625. 1024/125
640. 128/625. 16384/125
1280. 256/625 65536/125
1024. 1024/3125. 335.544
total:. 1. 999.224
taking my pdf as x/3125
false
step-by-step explanation:
4y - 6 + 4y^2 - 9
before simplifying this contains 4 terms
after simplifying
4y -15 + 4y^2
it contains 3 terms
arrange the equations with like terms in columns.
analyze the coefficients of x or y.
add the equations and solve for the remaining variable.
substitute the value into either equation and solve.
check the solution.