Mathematics, 20.08.2020 19:01 biggasi

If there are 80 students in a class and 20 are seniors, what proportion of students are not seniors?

Answers: 3

Show answers

Another question on Mathematics

Mathematics, 21.06.2019 18:30

Which expression is not a polynomial?

Answers: 2

Answer

Mathematics, 22.06.2019 01:30

In a rectangle klmn, km = 6x + 16 and ln = 49. find the value of x

Answers: 1

Answer

Mathematics, 22.06.2019 01:40

At wind speeds above 1000 centimeters per second (cm/sec), significant sand-moving events begin to occur. wind speeds below 1000 cm/sec deposit sand and wind speeds above 1000 cm/sec move sand to new locations. the cyclic nature of wind and moving sand determines the shape and location of large dunes. at a test site, the prevailing direction of the wind did not change noticeably. however, the velocity did change. fifty-nine wind speed readings gave an average velocity of x = 1075 cm/sec. based on long-term experience, σ can be assumed to be 245 cm/sec. (a) find a 95% confidence interval for the population mean wind speed at this site. (round your answers to the nearest whole number.) lower limit cm/sec upper limit cm/sec

Answers: 2

Answer

Mathematics, 22.06.2019 03:30

Tyler went to the supermarket to buy food for a food pantry. he has $36, and can carry up to 20 pounds of food in his backpack. pasta costs $1 for a 1-pound package. pasta sauce costs $3 for a 1.5 pound jar. let x = the number of packages of pasta and y = the number of jars of pasta sauce. one package of pasta is the right amount to go with one jar of pasta sauce. what is the best numbers of packages of pasta and jars of pasta sauce to buy for the food pantry? how many packages of pasta? how many jars of pasta sauce? explain your reasoning.