Question

Решение задач на применение правил умножения десятичных дробей. Урок 2 В квартире установлен двухтарифный электросчетчик. За месяц израсходовано электроэнергии 122 кВт•ч в дневное время и 158 кВтч в ночное время. Дневной расход электроэнергии оплачивается по тарифу 13,39 тенге за кВт•ч, а ночной – по тарифу 4,8 тенге за кВтч. Вычисли оплату электроэнергии за год, если режим потребления и тарифы оплаты электроэнергии не менялись. - Ответ: тенге. ПОМОГИТЕ СРОЧНО!!!!!​

Answer 1

Ответ:

1)122×13,39=1633,58

2)158×4,8=758,40

3)1633,58+758,40=2391,98

4)2391,98×12=28703,76(тенге в год)

Пошаговое объяснение:

Answer 2

To solve this problem, we need to calculate the total cost of electricity consumption for both daytime and nighttime usage over the course of a year.

Calculation for Daytime Usage:

The daytime electricity consumption is given as 122 kWh (kilowatt-hours) per month, and the tariff for daytime usage is 13.39 tenge per kWh. To calculate the cost of daytime electricity consumption for a year, we multiply the monthly consumption by 12 (months in a year) and then multiply it by the tariff:

122 kWh/month * 12 months/year * 13.39 tenge/kWh = 19679.44 tenge [[1]].

Calculation for Nighttime Usage:

The nighttime electricity consumption is given as 158 kWh per month, and the tariff for nighttime usage is 4.8 tenge per kWh. To calculate the cost of nighttime electricity consumption for a year, we use the same formula as above:

158 kWh/month * 12 months/year * 4.8 tenge/kWh = 9110.4 tenge [[1]].

Total Cost of Electricity Consumption for a Year:

To find the total cost of electricity consumption for a year, we add the costs of daytime and nighttime usage:

19679.44 tenge (daytime usage) + 9110.4 tenge (nighttime usage) = 28789.84 tenge.

Therefore, the total cost of electricity consumption for a year, without any changes in consumption patterns or tariffs, is 28789.84 tenge.

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