Предмет: Математика, автор: lisicenkokola19

ППомогите решить пожалуйста
1) Найдите среднее арифметическое чисел 3,4,6,7
а) 5 б)10
в)4 г)20
2)Таня учит 12 английских слов за 5 мин, а Лена-15 слов за 8 мин.Сколько слов в среднем учат вместе девочки за 1 мин?
3)Одно чисел равно 6целых 3 десятых.Второе число составляет 2/9 первого числа. Найдите среднее арифметическое этих двух чисел.
4)Найдите среднее арифметическое всех делителей числа 50
5*) Среднее арифметическое двух чисел равно 3 целых1/2, причём 1/8 первого числа равна 1/6 второго числа.Найдите эти числа.

Ответы

Автор ответа: Doratik
0
1)3+4+6+7=20
20:4=5
А) 5
3)6.3:9=0.7
0.7•2=1.4
0.7+1.4=2.1
2.1:2=1.05
Второе, четвёртое и пятое вспомнить не могу
Похожие вопросы
Предмет: Алгебра, автор: taisiya1985sakh
Предмет: Английский язык, автор: adinarita76
Task 2. read the text about each of the song about their hobbies and then choose the correct answer to the questions Emma runner rve been running for kvo vers luetokometres, but now inun approximately 10. My speed is nonton tve joined a jogging club. I had never met any of the members side them my friends when my father was younger, he was a the it, but he stopped after injuring his knee. In fact, I need to order an the just a simple pair. I don't believe that the more expensive Mla, skateboarder Most evenings, I go skating in me two way from my house, and around. My cousin, who is quite teaches me a few new moves ot but the park is only a minute or or hours there if my friends are ing occasionally lolns us, and he the timel Charlotte, rock climber My best wiend suggested I started now we both do it. My friend's mother drives us once or hvice a month do it once a week. I had no idea you needed so much when I first started cheapl But I love it. Climbing is something! don't think I'll ever grow tired on 1. Which person has made new efends because of her hobby? A. Emma C. Charlotte 2. Which person does her hobby near her home? A. Emma B. Mia C. Charlotte 3. Which person says she is getting better of her hobby? A. Emma B. Ma C. Charlotte 4. Which person does her hobby with a family member? A. Emma B. Mia C. Charlotte 5. Which person wants to do her hobby more often? A. Emma B. Mia C. Charlotte 6. Which person needs to buy something for her hobby? A. Emma B. Mia C. Charlotte 7. Which person says her hobby was more expensive than she thought? A. Emma B. Mia C. Charlotte​
Предмет: Геометрия, автор: therodrikpro
Предмет: Математика, автор: dimabaranov200