When using an augmented matrix to solve a system of equations, which of these is not an allowable elementary row operation?

a. square or take the square root of any row
b. multiply a row by a nonzero constant
c. switch by any two rows
d. replace a row with the sum or difference of that row and another row

step-by-step explanation:

options

a

step-by-step explanation:

the denominator cannot be the same as one of the factors.

8 denominator times 2 denominator = 16

and 7 numerator time 11 = 77

77/16= 77/16 ( they cannot be further simplified)

a

step-by-step explanation:

its wrong

both the histogram and the stem and leaf plot will visually show how many shoppers were of various ages within each range of data.   the histogram does not give us the specific ages of these shoppers unlike the stem and leaf plot.a histogram does not give us a true range of the data because we do not know exactly how old the shoppers were. a stem and leaf plot will give exact ages, so we can determine the exact range along with all measures of center and the others measures of center.   with the histogram, we cannot find any of these.

step-by-step explanation: