Find the general solution to the following a) y′′−5y′+6y=0

b) y′′−4y=0

c) y′′+4y=0

d) y′′+8y′+16y=

Solve the given system of equations. 2y= -x+9 , 3x-6= -15

What is the perimeter of a rectangular building that is 80 feet wide and 140 feet deep?

Scores on the cognitive scale of the bayley-scales of infant and toddler development range from 1 to 19, with a standard deviation of 3. calculate the margin of error in estimating the true mean cognitive scale score, with 99% confidence, if there are 12 infants and toddlers in a sample.