1^2-2^2+3^2-4^2+...+19^2-20^2
А. 210
В. 180
С. - 180
D. -210
Е. - 360...
![subject](/tpl/images/cats/mat.png)
Mathematics, 22.05.2021 06:30 aurelio1121
1^2-2^2+3^2-4^2+...+19^2-20^2
А. 210
В. 180
С. - 180
D. -210
Е. - 360
![ansver](/tpl/images/cats/User.png)
Answers: 1
![](/tpl/images/ask_question.png)
![](/tpl/images/ask_question_mob.png)
Another question on Mathematics
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 20:30
Solve each quadratic equation by factoring and using the zero product property. [tex]x^2+6x+8=0[/tex]
Answers: 2
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 20:30
Tom is the deli manager at a grocery store. he needs to schedule employee to staff the deli department for no more that 260 person-hours per week. tom has one part-time employee who works 20 person-hours per week. each full-time employee works 40 person-hours per week. write and inequality to determine n, the number of full-time employees tom may schedule, so that his employees work on more than 260 person-hours per week. graph the solution set to this inequality.
Answers: 2
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 23:30
Atruck can be rented from company a $50 a day plus $0.60 per mile. company b charges $20 a day plus $0.80 per mile to rent the same truck. find the number of miles in a day at which the rental costs for company a and company b are the same
Answers: 1
![question](/tpl/images/cats/mat.png)
Mathematics, 22.06.2019 00:00
Cole says the distance between points (-5,0) and (0,-5)is 5 units. is he correct? explain why or why not.
Answers: 1
You know the right answer?
Questions
![question](/tpl/images/cats/mat.png)
Mathematics, 08.02.2021 21:10
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/fizika.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 08.02.2021 21:10
![question](/tpl/images/cats/mat.png)
Mathematics, 08.02.2021 21:10
![question](/tpl/images/cats/en.png)
English, 08.02.2021 21:10
![question](/tpl/images/cats/obshestvoznanie.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 08.02.2021 21:10
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 08.02.2021 21:10
![question](/tpl/images/cats/ekonomika.png)
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 08.02.2021 21:10
![question](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 08.02.2021 21:10
![question](/tpl/images/cats/himiya.png)
Chemistry, 08.02.2021 21:10
![question](/tpl/images/cats/mat.png)
Mathematics, 08.02.2021 21:10
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/himiya.png)
![question](/tpl/images/cats/en.png)
English, 08.02.2021 21:10