Carlos and maria drove a total of 197 miles in 3.8 hours. carlos drove the first part of the trip and averaged 55 miles per hour. maria drove the remainder of the trip and averaged 47 miles per hour. for approximately how many hours did maria drive? round your answer to the nearest tenth if necessary. a. 2.8 hours b. 2.1 hours c. 1.5 hours d. 2.3 hours

Yoku is putting on sunscreen. he uses 2\text{ ml}2 ml to cover 50\text{ cm}^250 cm 2 of his skin. he wants to know how many milliliters of sunscreen (c)(c) he needs to cover 325\text{ cm}^2325 cm 2 of his skin. how many milliliters of sunscreen does yoku need to cover 325 \text{ cm}^2325 cm 2 of his skin?

Consider circle h with a 3 centimeter radius. if the length of minor arc what is the measure of zrst?

Researchers were interested in whether relaxation training decreases the number of headaches a person experiences. they randomly assigned 20 participants to a control group or a relaxation training group and noted the change in number of headaches each group reported from the week before training to the week after training. which statistical analysis should be performed to answer the researchers' question?