Mathematics, 18.10.2020 04:01, shaheedbrown06
Zöe schedules advertising for a radio station. She must fill 12 minutes each hour with 30 second ads and 60 second ads. Zöe sold twice as many 60 second ads as she did 30 second ads. She defines x as the number of 30 second ads and y as the number of 60 second ads that she sold. Zöe writes the system 2 x = y and 30 x + 60 y = 12. Which statement identifies Zöe’s error and the correction that is needed?
a) Zöe used seconds to measure time for each ad, but she used minutes for the total. She should have used 0.5 x + y = 12.
b) Zöe set up an equation that would translate to “twice the number of 30 second ads = the number of 60 second ads.” She should have used x = 2 y.
c) Zöe compared the number of 30 second ads to the number of 60 second ads without including the total number of ads. She should have used 2 (30 x) + 1 (60 y) = 12.
d) Zöe did not include the whole hour in the total time. She should have used 30 x + 60 y = 60.
Answers: 2
Mathematics, 21.06.2019 21:30, BARRION1981
Over the course of the school year, you keep track of how much snow falls on a given day and whether it was a snow day. your data indicates that of twenty-one days with less than three inches of snow, five were snow days, while of the eight days with more than three inches of snow, six were snow days. if all you know about a day is that it is snowing, what is the probability that it will be a snow day?
Answers: 1
Mathematics, 22.06.2019 02:20, Amholloway13
Jenny invests $2,000 at an interest rate of 5%. the amount of money, me, in jenny's account after tyears can be represented using the equation ma-2000(1.05). if jenny would have invested the same amount of money at the same interest rate four years ago, the equation representing the amount of money mo. in her account would be represented using the equation! mg = 2000(105)*** which of the following is equivalent to mp? 2000(105) om- 1.05 2000(1.05) mo 1059 mp-2000(1.05) (105) mp - 2000(1.05) + (1.05)
Answers: 1
Zöe schedules advertising for a radio station. She must fill 12 minutes each hour with 30 second ads...
Mathematics, 04.02.2021 03:20
Computers and Technology, 04.02.2021 03:20
Business, 04.02.2021 03:20
Biology, 04.02.2021 03:20
History, 04.02.2021 03:30