Question

1)-1,5x=6 2)1/3y=123)13,9-z=7,5z=?4)-0,1g-5=0g=?5)Является ли число 8 корнем уравнения С-8=0а)нетб)да6)Является ли корнем уравнения 8z+16=0 числа 2?а)нетб)даРешите пжжжж

Answer 1

А)-1,5×=6
×=-6÷1,5
×=60÷15
×=-4
проверка
-1,5×-4=6
6=6
Ответ:×=6
б)1/3у=12
у=12:3
у=36
Проверка:
1/3×36=12
12=12
Ответ:у=36
13,9-z=7,5
z=13,9-7-5
z=6,4
Проверка:
13,9-6,4=7,5
7,5=7,5
Ответ:z=6,4
-0,1g-5=0
g=-0,1×5
g=-50
Проверка:
-0,1×-50-5=0
5-5=0
Ответ:g=-50
Проверка:
5) 8-8==0 да
Ответ:8 корень уравнения.
6) нет

Answer 2

1. To solve the equation -1.5x = 6, we need to isolate the variable x.

Starting with -1.5x = 6, we can divide both sides of the equation by -1.5 to solve for x: x = 6 / -1.5

Simplifying, we have: x = -4

Therefore, the solution to the equation -1.5x = 6 is x = -4.

2. To solve the equation (1/3)y = 12, we need to isolate the variable y.

Multiplying both sides of the equation by 3 to eliminate the fraction, we have: 3 * (1/3)y = 3 * 12

Simplifying, we get: y = 36

Therefore, the solution to the equation (1/3)y = 12 is y = 36.

3. To solve the equation 13.9 - z = 7.5z, we need to isolate the variable z.

Combining like terms, we have: 13.9 = 7.5z + z

Simplifying, we get: 13.9 = 8.5z

To solve for z, we divide both sides of the equation by 8.5: z = 13.9 / 8.5

Calculating the value, we find: z ≈ 1.635

Therefore, the value of z that satisfies the equation 13.9 - z = 7.5z is z ≈ 1.635.

4. To solve the equation -0.1g - 5 = 0g, we need to isolate the variable g.

Adding 0.1g to both sides of the equation, we have: -0.1g + 0.1g - 5 = 0g + 0.1g

Simplifying, we get: -5 = 0.1g

To solve for g, we divide both sides of the equation by 0.1: g = -5 / 0.1

Calculating the value, we find: g = -50

Therefore, the solution to the equation -0.1g - 5 = 0g is g = -50.

5. The equation C - 8 = 0 is given, and we want to determine if 8 is a root (solution) of the equation.

To check if 8 is a root, we substitute 8 into the equation: C - 8 = 0

If the equation holds true when C = 8, then 8 is a root of the equation.

Let's substitute C = 8: 8 - 8 = 0 0 = 0

Since the equation is true when C = 8, we can conclude that 8 is a root of the equation C - 8 = 0. Therefore, the answer is "b) yes."

6. The equation 8z + 16 = 0 is given, and we want to determine if 2 is a root (solution) of the equation.

To check if 2 is a root, we substitute 2 into the equation: 8z + 16 = 0

If the equation holds true when z = 2, then 2 is a root of the equation.

Let's substitute z = 2: 8(2) + 16 = 0 16 + 16 = 0 32 ≠ 0

Since the equation is not true when z = 2, we can conclude that 2 is not a root of the equation 8z + 16 = 0. Therefore, the answer is