Wich operation below results in a rational number?

Which of the following is correct interpretation of the expression -4+13

The actual length of side y is 22 cm. use the scale drawing to find the actual length of side x. a) 15.2 cm b) 17.1 cm c) 18.0 cm d) 28.3 cm

The two-way relative frequency table shows the relative frequencies of late-night workers and day workers who do or do not drink coffee. what percent of late-night workers do not drink coffee? enter your answer in the box as a percentage. work late-night jobs work day jobs drink coffee 0.733 0.455 do not drink coffee 0.267 0.545