subject
Mathematics, 26.08.2019 11:00 maryd316

The national catch of atlantic cod has been declining in the past few decades. we can model this decline with the equation y = −.003x2 + .120x + 1.909 where x is the number of years since 1950 and y is the catch in millions of metric tons. in which year did the catch reach its maximum? in which year will the catch reach 0? for what years was the catch increasing? decreasing? when was the catch greater than 2.5 million metric tons? show all of your work or explain how you came up with your solutions.

ansver
Answers: 1

Another question on Mathematics

question
Mathematics, 21.06.2019 20:30
Adecorative window is made up of a rectangle with semicircles at either end. the ratio of ad to ab is 3: 2 and ab is 30 inches. what is the ratio of the area of the rectangle to the combined area of the semicircles? possible answers: a. 2: 3 b. 3: 2 c. 6: π d. 9: π e. 30: π
Answers: 1
question
Mathematics, 22.06.2019 01:30
Asample of 200 rom computer chips was selected on each of 30 consecutive days, and the number of nonconforming chips on each day was as follows: the data has been given so that it can be copied into r as a vector. non.conforming = c(10, 15, 21, 19, 34, 16, 5, 24, 8, 21, 32, 14, 14, 19, 18, 20, 12, 23, 10, 19, 20, 18, 13, 26, 33, 14, 12, 21, 12, 27) #construct a p chart by using the following code. you will need to enter your values for pbar, lcl and ucl. pbar = lcl = ucl = plot(non.conforming/200, ylim = c(0,.5)) abline(h = pbar, lty = 2) abline(h = lcl, lty = 3) abline(h = ucl, lty = 3)
Answers: 3
question
Mathematics, 22.06.2019 02:30
Aresearch study is studying the effects of a new drug for osteoporosis alzheimer's disease (ad) for women above the age of 65 years. a group of individuals with osteoporosis is randomized into two groups. one group is treated conventionally, and the second group is treated with the new medication. assessments are made at 3, 6, 12, 36, and 48 months. the conventionally treated group is assessed for ad using a serum blood test, and the treatment group is assessed for ad using a pet radiotracer that binds to beta-amyloid plaques. in comparing these 2 trial arms, the authors of the study may encounter which type of bias? a. selection bias on the risk of developing b. measurement bias c. confounding bias d. recall bias e. lead-time bias
Answers: 2
question
Mathematics, 22.06.2019 06:00
What is the equation of the line that passes through (3,5) and is parallel to y=2x+6
Answers: 1
You know the right answer?
The national catch of atlantic cod has been declining in the past few decades. we can model this dec...
Questions
question
Mathematics, 12.12.2020 16:50
question
Social Studies, 12.12.2020 16:50
question
Mathematics, 12.12.2020 16:50
question
Mathematics, 12.12.2020 16:50
question
Mathematics, 12.12.2020 16:50
Questions on the website: 13722367