Makaila

Most popular questions and responses by Makaila
1. Algebra

Shirley is drawing triangles that have the same area. The base of each triangle varies inversely with the height. What are the possible base and height of a second triangle if the first triangle's base is 12 and its height is 8? Select one: a. 120 and 80

2. Algebra

A store is selling two mixtures of coffee beans in one-pound bags. The first mixture has 12 ounces of Sumatra combined with 4 ounces of Celebes Kalossi, and costs \$15. The second mixture has 4 ounces of Sumatra and 12 ounces of Celebes Kalossi, and costs

3. Statistics

A doctor want to estimate the HDL cholesterol of all 20- to 29- year old females. how many subjects are needed to estimate the HDL cholesterol within 3 points with 99% confindence assuming s=10.5. Suppose the doctor would be content with 90% confidence.

4. Math

Pairs of markings a set distance apart are made on highways so that police can detect drivers exceeding the speed limit. Over a fixed distance, the speed R varies inversely with the time T. For one particular pair of markings, R is 60 mph when T is 8

5. Math

in a recent year, a single person could expect to pay \$4550 in income taxes on an adjusted gross income of \$35,000. how much more tax should the person expect to pay if her adjusted gross income increased by \$4000, knowing that this would not move her into

6. Math

A hotel manager found that his gross receipts for the day, including a 9% sales tax, were \$3927.27 . Find the amount of sales tax collected

7. Math

What is the volume of a square glass window with a side length of 1 3/4 ft and a width of .08 ft?

8. math

suppose 8 out of every 20 students are absent from school less than 5 days a year. Predict how many students would be absent from school less than 5 days a year out of 40,000 students.

9. Statistics

Find the minimum sample size n needed to estimate u for the given values of c, s, & E. c=0.98, s=6.5, & E=1.?