Marie, Erica, and Katrina had some gummy worms. Erica had 2/5 cup of gummy worms. Katrina had 4/5 cup of gummy worms. If the three girls had a total of 1 4/5 cups of gummy worms, then how many cups does Marie have? Α. 1 2/5 cups
В. 6/5 cups
C. 1 cup
D. 3/5 cups

The given diagram shows the parts of a right triangle with an altitude to the hypotenuse. using the two given  measures, find the other four.

X– 4 = 12.5 can be written in words as

The survey of study habits and attitudes (ssha) is a psychological test that measures the motivation, attitude toward school, and study habits of students, scores range from 0 to 200. the mean score for u.s. college students is about 115, and the standard deviation is about 30. a teacher who suspects that older students have better attitudes toward school gives the ssha to 55 students who are at least 30 years of age. the mean score is 113.2. assume the population standard deviation is 30 for older students what is the margin of error for a 95% confidence interval for the population mean score for a. older students? b. compute the 95% confidence interval for the population mean score for older students. c. compute the 99% confidence interval for the population mean score for older students. d. compute the 88% confidence interval for the population mean score for older students.