Question

Помогите срочно плизз умоляю так срочно надо из следущих выражений выписать сначала числовые а зетем буквенные выражения 3a-17b 328 -18 *3 81 :9+72 x-5y 2)найдите значения выражения 5х+17 при х+4 3)цена 1 кг масла - т р а 1 кг творога - т р запиши в виде выражения а)стоимость 3 кг масла б ) стоимость 2 кг творог в) стоимость 3 кг масла и 2 кг творог вместе

Answer 1

1) Буквенные: 3a-17b и x-5y
    Числовые: 328 -18 *3 и 81 :9+72

2) 5(х+4)+17
    5х+20+17
    5х=37
     х=7,4
3) а) 3и руб,б) 2t руб,в) (3и+2t) руб.

Answer 2

Ordering Expressions

To order the given expressions, we need to separate the numerical terms from the alphabetical terms. Here are the expressions with the numerical terms listed first, followed by the alphabetical terms:

1. 328 - 18 * 3 + 81 / 9 2. 3a - 17b 3. 72x - 5y

Evaluating Expressions

1. To find the value of the expression 5x + 17 when x = 4, we substitute the value of x into the expression and calculate: - 5(4) + 17 = 20 + 17 = 37

2. To calculate the cost of 3 kg of oil and 2 kg of cottage cheese, we need to know the prices per kilogram of each item. Let's assume the price of 1 kg of oil is t rubles and the price of 1 kg of cottage cheese is r rubles. The expressions for the cost of each item are as follows: - Cost of 3 kg of oil: 3t rubles - Cost of 2 kg of cottage cheese: 2r rubles

To find the cost of 3 kg of oil and 2 kg of cottage cheese together, we add the two expressions: - Cost of 3 kg of oil + Cost of 2 kg of cottage cheese = 3t + 2r rubles

Please note that the actual values of t and r are not provided in the question, so we cannot calculate the exact cost. The expressions above represent the general form of the cost based on the given information.

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