Вопрос школьника по предмету Алгебра
3. Преобразуйте выражение:
РЕШИТЕ ПОЖАЛУЙСТА ДАМ 20 БАЛЛОВ
а)(16х−4у3)−1; б)3а−42в−3 •( 10• а7в3.
4.Вычислите:2−44−38−7.
5. 6. Составить частотную таблицу найти среднее арифметическое, размах, моду и медиану ряда цифр 2,5,8,9,4,1,5,7,9,8,4,6,9,3,4,5,6,7,2,4,5,8,3,2,9.
Ответ учителя по предмету Алгебра
Ответ:
3. а) 16x-4y^3-1 b) 3(a-14b-10a^7b^3)
Объяснение:
4. -87
5. среднее значение равно 133_25=5,32
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You have received a letter from your English-speaking pen friend,Arnold by name.In his letter Arnold writes :
«Yesterday evening we had Christmas dinner.
The day before yesterday we had decorated the X-mas three,then Mum and Granny cooked some tasty things we had for dinner. I wrote my resolutions : Starting today I will :
1. Be nice to everyone,whether I like them or not.
2. Stop lying.
3. Stop forgetting my Algebra notebook. 4. Keep my comments myself .
Do you celebrate X-mas? With whom do you usually celebrate it? Do you ever make resolutions? Where did you spend your last X-mas and school holidays? I’m going to visit the USA in January. «
Write a letter to Arnold .
In your letter :
answer his questions ;
ask 3 questions about his plans for his journey to the USA
AB=BC=26, AC=48. Найдите длину медианы BM