Question

Вычислите. Выразите результат А) в дециметрах и сантиметрах , в метрах и сантиметрах: (123000 мм - 2250 см ) : 30; Б) в литрах: ( 450 л + 40 дм3 • 30)-15000 см3 ; В) в сутках: 48 ч • 12 - 1440 мин • 2 . ПОМОГИТЕ ПОЖАЛУЙСТА!!!!! Того, кто быстрее и правельнее сделает , сделаю лучшим!!!! И БЫСТРЕЕ ПОЖАЛУЙСТА!!!! Очень нужно!!!!!

Answer 1

А) в дециметрах и сантиметрах , в метрах и сантиметрах:
(123000 мм - 2250 см ) : 30=(12300 cм-2250 см):30=10050 см:30=335 см=   33 дм 5 см=3 м 35 см

Б) в литрах:
( 450 л + 40 дм3 • 30)-15000 см3=(450 дм³+1200 дм³)-15 дм³=1635 дм³= 1635 л

В) в сутках:
48 ч • 12 - 1440 мин • 2 =576 ч-2880 мин=576 ч-2880:60 ч=576 ч -48 ч=528 ч =528:24 суток=22 суток

Answer 2

Calculation A: Converting millimeters and centimeters to decimeters and centimeters

To convert from millimeters (mm) to decimeters (dm) and centimeters (cm), we need to divide the given value by 10.

Given: - 123,000 mm - 2,250 cm

Converting 123,000 mm to decimeters: - 123,000 mm ÷ 10 = 12,300 dm

Converting 2,250 cm to centimeters: - 2,250 cm ÷ 10 = 225 dm

Therefore, the result in decimeters and centimeters is: - 123,000 mm = 12,300 dm + 225 cm

Calculation B: Calculating volume in liters

To calculate the volume in liters, we need to perform the given operations.

Given: - 450 liters - 40 dm³ - 30

Calculating the volume: - 40 dm³ • 30 = 1,200 dm³

Converting 1,200 dm³ to cm³: - 1 dm³ = 1,000 cm³ - 1,200 dm³ = 1,200,000 cm³

Subtracting 15,000 cm³ from 1,200,000 cm³: - 1,200,000 cm³ - 15,000 cm³ = 1,185,000 cm³

Converting 1,185,000 cm³ to liters: - 1 cm³ = 0.001 liters - 1,185,000 cm³ = 1,185 liters

Therefore, the result in liters is: - (450 liters + 40 dm³ • 30) - 15,000 cm³ = 1,185 liters

Calculation C: Calculating time in days

To calculate the time in days, we need to perform the given operations.

Given: - 48 hours - 12 - 1,440 minutes - 2

Calculating the total minutes: - 48 hours = 48 hours • 60 minutes = 2,880 minutes

Calculating the total minutes after multiplying by 12: - 2,880 minutes • 12 = 34,560 minutes

Calculating the total minutes after multiplying by 2: - 34,560 minutes • 2 = 69,120 minutes

Converting 69,120 minutes to days: - 1 day = 24 hours = 24 hours • 60 minutes = 1,440 minutes - 69,120 minutes = 69,120 minutes ÷ 1,440 minutes/day = 48 days

Therefore, the result in days is: - 48 hours • 12 - 1,440 minutes • 2 = 48 days

I hope this helps! Let me know if you have any further questions.