Question

Ребят,помогите очень надо,срочно!!! 2 3/13+2 11/13; 14 6/20-8 12/20. Галя сделала 160 вареников творогом и картошкой,причём вареники с творогом составляли 5/8 всех вареников.Сколько вареников с творогом сделала Галя? За контрольную работу по математике отметку "4" получили 12 учеников,что составляло 4/11 учеников класса.Сколь учеников в этом классе? Марина,Ирина,Елена,Ольга съели торт.Мария съела 3/16 торта,Ирина-5/16,Елена-2/16.Какую часть съела Ольга?

Answer 1

№2
1)160:8*5=100(в.) ответ: Галя сделала 100 вареников с творогом)Простая задачка)
№3
1)12*11=132:4=33
Ответ:33 ученика
№4
1)3/16+5/16+2/16=10/16 - съели Марина,Елена и Ирина
16/16 - 10/16=6/16-  съела Ольга  

Answer 2

Mathematical Expressions

To solve the mathematical expressions, let's calculate them step by step:

1. 2 + 3/13 + 2 + 11/13 - First, add the whole numbers: 2 + 2 = 4. - Then, add the fractions: 3/13 + 11/13 = 14/13. - Finally, add the whole number and the fraction: 4 + 14/13.

2. 14 + 6/20 - 8 + 12/20 - First, add the whole numbers: 14 - 8 = 6. - Then, add the fractions: 6/20 + 12/20 = 18/20. - Finally, simplify the fraction: 18/20 = 9/10.

Therefore, the result of the first expression is 4 + 14/13 and the result of the second expression is 6 + 9/10.

Calculation Results

1. 2 + 3/13 + 2 + 11/13 = 4 + 14/13 2. 14 + 6/20 - 8 + 12/20 = 6 + 9/10

Now, let's move on to the next set of questions.

Calculation of Dumplings with Cottage Cheese

Galya made 160 dumplings with cottage cheese and potatoes, with the cottage cheese dumplings accounting for 5/8 of all the dumplings. To find out how many dumplings with cottage cheese Galya made, we can use the following calculation:

1. Calculate the number of dumplings with cottage cheese: 160 * (5/8).

Therefore, Galya made 100 dumplings with cottage cheese.

Calculation of Students in the Class

For the math test, 12 students received a grade of "4," which accounted for 4/11 of the class. To find out how many students are in the class, we can use the following calculation:

1. Calculate the total number of students in the class: 12 / (4/11).

Therefore, there are 33 students in the class.

Calculation of Cake Portions

Marina, Irina, Elena, and Olga ate a cake. Maria ate 3/16 of the cake, Irina ate 5/16, Elena ate 2/16, and we need to find out how much Olga ate.

To find out how much Olga ate, we need to subtract the portions eaten by Maria, Irina, and Elena from the total cake:

1. Calculate the total portion eaten by Maria, Irina, and Elena: (3/16) + (5/16) + (2/16). 2. Subtract the total portion from 1 (since 1 represents the whole cake) to find out how much Olga ate: 1 - [(3/16) + (5/16) + (2/16)].

Therefore, Olga ate 6/16 of the cake.

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