Question

7. Выполни действия. 8 кг•4+25кг. 7ч8мин-6ч25 мин. 2сут7ч+7сут 19ч. 1ц-9ц•5 ​

Answer 1

Ответ:

ОТВЕТ:

8кг 4 + 25кг= 57 кг

7ч8мин-6ч25мин= 43мин

2сут7ч+7 сут19ч=10сут 2ч

1ц-9кг*5=55 кг

Пошаговое объяснение:

Пошаговое объяснение:

1 час=60 мин

1 сутки 24 часа

1 ц=100кг

8 кг * 4 + 25 кг = 32 кг + 25 кг = 57 кг

7 ч 8 мин - 6 ч 25 мин = 6 ч 68 мин 6 ч 25 мин =0ч 43 мин = 43мин

или

7 ч 8 мин - 6 ч 25 мин= (7*60+8) мин - (6*60+25)

мин=

= 428мин - 385 мин=43 мин

2сут 7ч+7сут 19ч=9сут 26ч=10сут 2ч

или

2сут 7ч+7сут 19ч=(2*24+7)ч +

(7*24+19)4=554+187ч=242 ч=10 сут 2 ч

1ц - 9кг 5=100 кг-45 кг=55 кг

Answer 2

To solve the given expression, let's break it down step by step:

1. Multiply 8 kg by 4: - 8 kg * 4 = 32 kg

2. Multiply 25 kg by 7: - 25 kg * 7 = 175 kg

3. Subtract 6 hours and 25 minutes from 7 hours and 8 minutes: - 7 hours - 6 hours = 1 hour - 8 minutes - 25 minutes = -17 minutes

4. Convert -17 minutes to hours and subtract it from 1 hour: - -17 minutes ÷ 60 minutes/hour = -0.2833 hours (rounded to 4 decimal places) - 1 hour - 0.2833 hours = 0.7167 hours (rounded to 4 decimal places)

5. Add 2 days and 7 hours to 7 days and 19 hours: - 2 days + 7 days = 9 days - 7 hours + 19 hours = 26 hours

6. Convert 26 hours to days and hours: - 26 hours ÷ 24 hours/day = 1 day and 2 hours

7. Multiply 1 cent by 9 cents and then multiply the result by 5: - 1 cent * 9 cents = 9 cents - 9 cents * 5 = 45 cents

Now, let's summarize the results:

- 8 kg * 4 = 32 kg - 25 kg * 7 = 175 kg - 7 hours 8 minutes - 6 hours 25 minutes = 0 hours 43 minutes - 2 days 7 hours + 7 days 19 hours = 9 days 2 hours - 1 cent - 9 cents * 5 = 45 cents

Please note that the given expression does not specify the units for the final result. If you need the results in a specific unit, please let me know.