There is a piano in the comer of my room that once my grandparents. Its polished wood gleams softly in the sunlight coming through my bedroom Every time I run my fingers over the…
There is a piano in the comer of my room that once my grandparents. Its polished wood gleams softly in the sunlight coming through my bedroom Every time I run my fingers over the keys, I can almost hear laughter and memories that echo back from the past, taking me back to a time I never B_ but which I feel a deep connection to. The melodles that sound from this instrument during family gatherings tell C of joy, sorrow and holldays, connecting generations. When I play, I don't just practice scales; I weave a tapestry of history, infusing my modern teenage dreams into notes, creating a unique blend of nostalgia and youthful energy. This piano is D. than just a piece of furniture; it is a legacy, a channel for expressing my emotions and a reminder that music has an incredible power our past with the present, allowing me to honor those who came before me and discover my own voice. BELONG EXPERIENCE STORY MUCH CONNECT
Давайте разберём задачи одну за другой.
Задача по английскому
В этой задаче необходимо вставить подходящие слова в текст. Давайте разберёмся с каждой частью.
B_
Оригинальное предложение:
"...taking me back to a time I never B_ but which I feel a deep connection to."Опция: BELONG
Подходит форма "belonged", то есть: "...taking me back to a time I never belonged but which I feel a deep connection to."C
Оригинальное предложение:
"The melodies that sound from this instrument during family gatherings tell C of joy, sorrow and holidays..."Опция: STORY
Подходит форма "stories", то есть: "The melodies that sound from this instrument during family gatherings tell stories of joy, sorrow and holidays..."D
Оригинальное предложение:
"This piano is D than just a piece of furniture..."Опция: MUCH
Подходит "more", т.е.: "This piano is more than just a piece of furniture..."CONNECT
Оригинальное предложение:
"...music has an incredible power E our past with the present..."Заменяем на "to connect": "...music has an incredible power to connect our past with the present..."
Задачи по математике
Задача 151
Давайте разберём первый пункт этой задачи:
Упростите выражение в п. 151 а)
\[ \left( x^{-2} \right) + \left( \frac{a^2}{m^2} \right)^{-1} - \left( \frac{m^2}{a^2} \right)^{-1} \]Разделим на шаги:
- \( x^{-2} = \frac{1}{x^2} \)
- \(\left( \frac{a^2}{m^2} \right)^{-1} = \frac{m^2}{a^2}\)
- \(\left( \frac{m^2}{a^2} \right)^{-1} = \frac{a^2}{m^2}\)
После подстановки получаем: \[ \frac{1}{x^2} + \frac{m^2}{a^2} - \frac{a^2}{m^2} \]
Упрощение задачи п. 152 а): \[ \frac{2m + 1}{2m - 1} - \frac{2m - 1}{2m + 1} \]
Для упрощения используем общий знаменатель: \[ \frac{(2m + 1)^2 - (2m - 1)^2}{(2m - 1)(2m + 1)} \]
Раскроем скобки и упростим: \[ \frac{4m^2 + 4m + 1 - (4m^2 - 4m + 1)}{4m^2 - 1} = \frac{8m}{4m^2 - 1} \]
Задача 153
П. 153 а): \[ \frac{a^2 - 9}{2a^2 + 1} \div \left( \frac{6a + 1}{a - 3} + \frac{6a + 1}{a + 3} \right) \]
Переписываем операцию деления как умножение на обратную дробь: \[ \frac{a^2 - 9}{2a^2 + 1} \times \left( \frac{(a-3)(a+3)}{2} \right) \]
После упрощения: \[ = \frac{(a-3)(a+3)}{2a^2 + 1} \times \frac{(a-3)(a+3)}{2} \]
Упростите и получите конечный результат.
