Question

1) 48 ____ 1.2*0.8 2) 3) Решите уравнение -4x+1=9 4) найдите значение выражение b(7b+6) - (b+3)² при b= РАСПИСЫВАЙТЕ ВСЕ ПОДРОБНО , спасибо.

Answer 1

Ответ:

1)5

2)не понел заданиу

3)х=-2

4)1005

Пошаговое объяснение:

$1)\frac{48}{1.2 \times 0.8 } = \frac{48}{9.6} = 5 \\3) - 4x + 1 = 9 \\ - 4x = 9 - 1 \\ - 4x = 8 \\ - x = 2 \\ x = - 2 \\ 4)b(7b + 6) - (b + 3) ^{2} \\ 7 {b}^{2} + 6b - {b}^{2} - 6b - 9$

Продолжение

$6 {b}^{2} - 9 = 6 \times {13}^{2} - 9(b = 13) = 6 \times 169 - 9 = 1014 - 9 = 1005$

Answer 2

1. To solve the expression 1.2 * 0.8, simply multiply the two numbers:

1.2 * 0.8 = 0.96

Therefore, the value of the expression is 0.96.

2. It seems that you didn't provide an equation to solve. If you provide the equation, I can help you solve it.

3. Let's solve the equation -4x + 1 = 9:

Subtract 1 from both sides to isolate the term with x:

-4x + 1 - 1 = 9 - 1

Simplifying the equation:

-4x = 8

Now, divide both sides of the equation by -4 to solve for x:

(-4x) / -4 = 8 / -4

Simplifying further:

x = -2

So the solution to the equation -4x + 1 = 9 is x = -2.

4. Let's find the value of the expression b(7b + 6) - (b + 3)² when b is given. You haven't provided the value of b, so I can't provide a specific answer. Please provide the value of b so I can assist you further.