Question

11. 1) 572 : х - 52 = 1. 2 298 - 18х - 50 = 30 3) 9х + 121 + х = 231 4) 51(х - 1) + 510 = 0 Найдите число, если 30 % его равны 120. 1)400 2)4000 3) 1200 4) 3600 Для приготовления компота взяли 2 части яблок, 3 части слив, 5 частей абрикосов. Яблок взяли 400 г. Сколько килограммов всех фруктов потребовалось для приготовления компота. 1)1 2) 2 3) 1,1 4) 10 Плииииииииииииииииииииииииииииз Сроооооооооооочно!!!!

Answer 1

120*100:30=400
 
задача
2+3+5=10 частей всего
значит 1 часть -4
400:2*1=200 г-это 1 часть
200*3=600 г-взяли слив
200*5=1000г-взяли абрикос
400+600+1000=2000 г или 2 кг -взяли всего фруктов

Answer 2

Task 11: Solving Equations and Calculating Fruit Quantities

To solve the given equations and calculate the quantity of fruit needed for making compote, let's go step by step.

Equation 1: 572 + х - 52 = 1

To solve this equation, we need to isolate the variable 'х' on one side of the equation.

Subtracting 572 and 52 from both sides, we get:

х = 1 - 572 - 52

Simplifying the right side of the equation:

х = -623

Therefore, the value of 'х' is -623.

Equation 2: 2 * 298 - 18х - 50 = 30

To solve this equation, we again need to isolate the variable 'х' on one side of the equation.

Adding 50 to both sides and simplifying, we get:

2 * 298 - 18х = 30 + 50

2 * 298 - 18х = 80

Next, subtracting 2 * 298 from both sides:

-18х = 80 - 2 * 298

-18х = -516

Finally, dividing both sides by -18:

х = -516 / -18

Simplifying the right side of the equation:

х = 28.67 (rounded to two decimal places)

Therefore, the value of 'х' is approximately 28.67.

Equation 3: 9х + 121 + х = 231

To solve this equation, we need to combine like terms and isolate the variable 'х' on one side of the equation.

Combining the terms with 'х' and simplifying, we get:

10х + 121 = 231

Next, subtracting 121 from both sides:

10х = 231 - 121

10х = 110

Finally, dividing both sides by 10:

х = 110 / 10

Simplifying the right side of the equation:

х = 11

Therefore, the value of 'х' is 11.

Equation 4: 51(х - 1) + 510 = 0

To solve this equation, we need to distribute the 51 and combine like terms.

Expanding the equation, we get:

51х - 51 + 510 = 0

Next, combining like terms:

51х + 459 = 0

Subtracting 459 from both sides:

51х = -459

Finally, dividing both sides by 51:

х = -459 / 51

Simplifying the right side of the equation:

х = -9

Therefore, the value of 'х' is -9.

Now, let's move on to calculating the quantity of fruit needed for making compote.

Question: For making compote, 2 parts of apples, 3 parts of plums, and 5 parts of apricots were taken. If 400 grams of apples were used, how many kilograms of fruit were needed in total?

To calculate the total quantity of fruit needed, we need to determine the weight of each part and then multiply it by the respective number of parts.

Given that 2 parts of apples were used, and the weight of apples is 400 grams, we can calculate the weight of 1 part of apples:

Weight of 1 part of apples = 400 grams / 2 = 200 grams

Next, we need to calculate the weight of 3 parts of plums and 5 parts of apricots:

Weight of 3 parts of plums = 3 * Weight of 1 part of apples = 3 * 200 grams = 600 grams

Weight of 5 parts of apricots = 5 * Weight of 1 part of apples = 5 * 200 grams = 1000 grams

Finally, to convert the total weight to kilograms, we divide by 1000:

Total weight of fruit needed = (Weight of apples + Weight of plums + Weight of apricots) / 1000

Total weight of fruit needed = (400 grams + 600 grams + 1000 grams) / 1000

Total weight of fruit needed = 2000 grams / 1000

Total weight of fruit needed = 2 kilograms

Therefore, for making the compote, a total of 2 kilograms of fruit were needed.

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