When adding or subtracting two fractions with denominators that are not equal, what is the first step you take? what would you do if you didn’t know what the values of the denominators were, such as when there are variables in the denominators? for example, what denominator would you use if you were adding 1/a and 1/b? how would your new denominator affect the numerators? can you come up with denominators that contain variables and aren’t equal that would require you to change only one denominator? explain.

Someone answer asap for ! 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 a two-digit number the units' digit is 7 more than the tens' digit. the number with digits reversed is three times as large as the sum of the original number and the two digits. find the number.

The equation of line wx is y=2x-5. write an equation of a line perpendicular to line wx in slopeintercept form the contains points (-1,-2)