Which of the following statements are true (i) a nonhomogeneous system of 7 equations in 6 unknowns always has a unique solu- tion. (i) if a and b are row equivalent then their row spaces are the same. (iii) if a 7 x 9 matrix has 7 pivot columns then nul a=r2 a. i only b. ii only c. iii only d. ii and iii only e. i, ii, and iii

Is the square root of 4 plus the square root of 16 rational?

Need now max recorded the heights of 500 male humans. he found that the heights were normally distributed around a mean of 177 centimeters. which statements about max’s data must be true? a) the median of max’s data is 250 b) more than half of the data points max recorded were 177 centimeters. c) a data point chosen at random is as likely to be above the mean as it is to be below the mean. d) every height within three standard deviations of the mean is equally likely to be chosen if a data point is selected at random.

The area of the map is the product of the length and width. write and expression for the area as the product of the two binomials do not multiply