Question

1. Найди корень каждого уровнения x+3412=7351 15*х=180 х-462=712 х/73=53 2. Реши задачу с помощью уровнения В вазе 15 гвоздик, причём красных на 3 раза больше, чем белых. Сколько белых гвоздик в вазе 3. Найди корень уровнения х*(617-598)=((781+78)*19 4. Начертите квадрат со стороной 4 см. Закрасьте 1/4 площади квадрата. Склько кв см вы закрасили?

Answer 1

№1
x+3412=7351
х=7351-3412
х=3939
Проверка:
3939+3412=7351
7351=7351

15*х=180
х=180:15
х=12
Проверка:
15*12=180
180=180

х-462=712
х=712+462
х=1174
Проверка: 
1174-462=712
712=712

х/73=53
х=53*73
х=3869
Проверка:
3869/73=53
53=53

№2
Пусть х белых гвоздик в вазе, тогда 3х красных. Всего 15 штук.
х+3х=15
4х=15
х=15:4
х=3 3/4 белых гвоздик в вазе
Ответ: 3 3/4 белых гвоздик

Проверка:
3 3/4*3=15/4*3=45/4=11 1/4
11 1/4+3 3/4=14 4/4=15

№3
х*(617-598)=(781+78)*19
х*19=859*19
х=859*19:19
х=859
Проверка: 
859*(617-598)=(781+78)*19
859*19=859*19

№4
Рисуем квадрат со стороной 4см. Закрашиваем 1/4 часть - это будет квадратик со стороной 2см (вершина (угол) будет общая).
2*2=4 см² закрасили (это площадь 1/4 части первоначального квадрата)

Answer 2

1. Найдите корень каждого уравнения:

a) x + 3412 = 7351

To find the root of this equation, we need to isolate x on one side of the equation. Let's solve it step by step:

x + 3412 = 7351 x = 7351 - 3412 x = 3939

So, the root of the equation x + 3412 = 7351 is x = 3939.

b) 15*x = 180

To find the root of this equation, we need to isolate x on one side of the equation. Let's solve it step by step:

15*x = 180 x = 180 / 15 x = 12

So, the root of the equation 15*x = 180 is x = 12.

c) x - 462 = 712

To find the root of this equation, we need to isolate x on one side of the equation. Let's solve it step by step:

x - 462 = 712 x = 712 + 462 x = 1174

So, the root of the equation x - 462 = 712 is x = 1174.

d) x/73 = 53

To find the root of this equation, we need to isolate x on one side of the equation. Let's solve it step by step:

x/73 = 53 x = 53 * 73 x = 3869

So, the root of the equation x/73 = 53 is x = 3869.

2. Решение задачи с помощью уравнения:

В вазе 15 гвоздик, причём красных на 3 раза больше, чем белых. Сколько белых гвоздик в вазе?

Let's solve this problem using an equation. Let's assume the number of white carnations in the vase is x. Then, the number of red carnations would be 3x, as given in the problem.

The total number of carnations in the vase is the sum of white and red carnations:

x + 3x = 15

Simplifying the equation:

4x = 15

To find the value of x, we divide both sides of the equation by 4:

x = 15/4 x = 3.75

Since we can't have a fraction of a carnation, we round the value down to the nearest whole number. So, there are 3 white carnations in the vase.

Therefore, there are 3 white carnations in the vase.

3. Найдите корень уравнения:

x*(617-598) = ((781+78)*19+4)

To find the root of this equation, we need to simplify both sides of the equation first:

x*(19) = (859*19+4)

Now we can simplify further:

19x = 16321+4 19x = 16325

To find the value of x, we divide both sides of the equation by 19:

x = 16325/19 x ≈ 859.21

So, the root of the equation x*(617-598) = ((781+78)*19+4) is approximately x ≈ 859.21.

4. Начертите квадрат со стороной 4 см. Закрасьте 1/4 площади квадрата. Сколько кв. см вы закрасили?

To find the area of the square, we need to square the length of one side.

Given that the side of the square is 4 cm, the area of the square is:

Area = side^2 = 4^2 = 16 square cm.

To find 1/4 of the area, we divide the total area by 4:

1/4 of the area = 16 / 4 = 4 square cm.

Therefore, you have colored 4 square centimeters of the square.