The sum of two numbers is 87 and their difference is 29. what are the two numbers?

58 and 29

Step-by-step explanation:

Set up your equations:

1) x + y = 87

2) x - y = 29

Use one of the equations to focus on when moving the numbers around such as for this one I used equation one:

3) y = -x + 87

x = (-x + 87) + 29

x = -x + 116

x + x = 116

2x = 116

x = 58

Input your value for x:

4) 58 + y = 87

y = 87 - 58

y = 29

Solve and check if your values are correct:

5) 58 + 29 = 89 correct

58 - 29 = 29 correct

an advantage of the standard deviation is that it increases as the dispersion of the data increases. e. the interquartile range is preferred when the data are not skewed or no have outliers. an advantage of the standard deviation is that it uses all the observations in its computation.

step-by-step explanation: