System A: x+3y=-9 2x+y=4. System B: 3x+4y=-9 2x+y=4 1. how can we get system b from system a? Choices: A- Replace one equation with the sum/difference of both equations B- Replace only the left-hand side of one equation with the sum/ difference of the left-hand sides of both equations C- Replace one equation with a multiple of itself D- Replace one equation with a multiple of the other equation 2. Based on the previous answer, are the systems equivalent? In other words, do they have the same solution? a- yes b-no

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.

In the sixth grade 13 out of 20 students have a dog if there are 152 sixth grade students how many of them have a dog

What 8/12+8/11 in another way than and improper fraction