Question

Решите задачи, чтобы всё было понятно! 1. Бак, имеющий форму прямоугольного параллепипеда, вмещает 70м3 (70м3сверху тройка) Вычислите глубину бака, если площадь его дна ровна 14м2. 2. С трёх лугов собрали сено. С первого 40% (проценты) Со второго - 35% всего сена. 3 луга- на 600 кг меньше, чем со второго луга. Сколько сена собрали со всех? Прошу решить всё правильно, буду рад.

Answer 1

V=S*h, где  h - глубина бака
h=V:S=70:14=5м

х все сено
40%=40/100=0,4      35%=35/100=0,35
0,4х с первого
0,35х со второго
0,35х-600 с третьего
0,4х+0,35х+0,35х-600=х
1,1х-х=600
0,1х=600
х=6000кг=6т сена

Answer 2

1. To find the depth of the rectangular parallelepiped tank, we need to divide the volume of the tank by the area of its base. Given that the volume of the tank is 70 m^3 and the area of its base is 14 m^2, we can calculate the depth as follows:

Depth = Volume / Area = 70 m^3 / 14 m^2 = 5 m

Therefore, the depth of the tank is 5 meters. [[1]]

2. Let's break down the information given in the problem step by step to find the total amount of hay collected from all three meadows.

- From the first meadow, 40% of the total hay was collected. - From the second meadow, 35% of the total hay was collected. - The amount of hay collected from the third meadow is 600 kg less than the amount collected from the second meadow.

Let's denote the total amount of hay collected from the second meadow as x kg. Then, the amount of hay collected from the third meadow is (x - 600) kg.

To find the total amount of hay collected, we can add up the amounts collected from each meadow:

Total hay = Amount from first meadow + Amount from second meadow + Amount from third meadow = 40% of total hay + 35% of total hay + (x - 600) kg

Since the total hay collected is the sum of the amounts collected from each meadow, we can write the equation:

Total hay = 40% of total hay + 35% of total hay + (x - 600) kg

To solve this equation, we can simplify it as follows:

Total hay = 0.4 * Total hay + 0.35 * Total hay + x - 600

Combining like terms, we get:

1.05 * Total hay = x - 600

Now, let's solve for x, the amount of hay collected from the second meadow:

x = 1.05 * Total hay + 600

Therefore, the total amount of hay collected from all three meadows is given by the equation:

Total hay = 0.4 * Total hay + 0.35 * Total hay + (1.05 * Total hay + 600)

Solving this equation will give us the total amount of hay collected. However, the specific values for the amounts collected from each meadow are not provided in the problem, so we cannot calculate the exact total amount of hay without that information.

3. Unfortunately, the information provided in the problem is not sufficient to determine the total amount of hay collected from all three meadows. We need additional information, such as