Mathematics, 31.01.2020 10:59 clay373
Can someone explain how to do this? i've watched every video possible for this topic and i'm doing something wrong still
a model rocket is launched with an initial upward velocity of
54/ms. the rocket's height h (in meters) after t seconds is given by the following h= 54t-5t^2. find all values of t for which the rocket's height is 26 meters.
round your answer(s) to the nearest hundredth.
Answers: 3
![54t-5t^2=26 \\ -5t^2+54t-26=0 \ \ \ \ \text{divide both sides by (-1)} \\ 5t^2-54t+26=0 \\ \\ t_{1,2}= \cfrac{54б \sqrt{(-54)^2-4*5*26} }{2*5} = \cfrac{54б \sqrt{2396} }{10}= \cfrac{54б 48.949 }{10} \\ \\ t_1= \cfrac{54- 48.949}{10}=0.50 \ seconds \ \ \text{[to the nearest hundredth]} \\ \\ t_2= \cfrac{54+ 48.949}{10}=10.29 \ seconds \ \ \text{[to the nearest hundredth]}](/tpl/images/0489/5326/44390.png)
Another question on Mathematics
Mathematics, 21.06.2019 15:40
What is the distance between the points 4,10 and -3,-14 on the coordinate plane
Answers: 2
Mathematics, 21.06.2019 19:30
Solve the following inequalities and show the solution on a number line. 2x+3< 3(4x+5)
Answers: 1
Mathematics, 21.06.2019 20:00
Credit card a offers an introductory apr of 3.4% for the first three months and standard apr of 15.7% thereafter,
Answers: 3
You know the right answer?
Can someone explain how to do this? i've watched every video possible for this topic and i'm doing...
Questions
Mathematics, 22.01.2021 22:40
Mathematics, 22.01.2021 22:40
Advanced Placement (AP), 22.01.2021 22:40
Mathematics, 22.01.2021 22:40
English, 22.01.2021 22:40
History, 22.01.2021 22:40
Mathematics, 22.01.2021 22:40
English, 22.01.2021 22:40
Mathematics, 22.01.2021 22:40
Biology, 22.01.2021 22:40
Mathematics, 22.01.2021 22:40
Mathematics, 22.01.2021 22:40
Social Studies, 22.01.2021 22:40
Physics, 22.01.2021 22:40
