Question

Упрости выражение и найди его значение: 0,3(2-b)-1,6(b-4),при b=-2,4 Помогите пожалуйста!!!!

Answer 1

0,3(2-b)-1,6(b-4)=0,6-0,3b-1,6b+6,4=7-1,9b
при b= -2,4
7-1,9*(-2,4)=7+4,56=11,56

Answer 2

0,6-0,3b-1,6b+6,4
7-1,9*(-2,4)
7+4,56=11,56

Answer 3

I can help you with math problems. To simplify the expression, you need to distribute the coefficients and then combine the like terms. Here are the steps:

$$0.3(2-b)-1.6(b-4)$$ $$=0.6-0.3b-1.6b+6.4$$ $$=-1.9b+7$$

To find the value of the expression when $b=-2.4$, you need to substitute the value of $b$ and then calculate the result. Here is how:

$$-1.9b+7$$ $$=-1.9(-2.4)+7$$ $$=4.56+7$$ $$=11.56$$

Therefore, the simplified expression is $-1.9b+7$ and its value when $b=-2.4$ is $11.56$. I hope this helps.Упрости+выражение+и+найди+его+значение:+0,3(2-b)-1,6(b-4),при+b=-2,4