Question

0,6a+0,4(a-55) Если a=-8,3

Answer 1

0,6a+0,4(a-55)=0,6а+0,4а-22=а-22

-8,3+22=13,7

Answer 2

Подставляем -8,3 вместо а

0,6-8,3+0,4(-8,3-55)=0,6-8,3-25,32=-33,02

Answer 3

To find the value of the expression 0.6a + 0.4(a - 55) when a = -8.3, you simply substitute the value of a into the expression and perform the calculations:

0.6a + 0.4(a - 55)

a = -8.3

0.6(-8.3) + 0.4(-8.3 - 55)

Now, calculate the values:

0.6(-8.3) = -4.98 0.4(-8.3 - 55) = -0.4 * (-8.3 + 55) = -0.4 * 46.7 = -18.68

Finally, add the two values together:

-4.98 + (-18.68) = -4.98 - 18.68 = -23.66

So, when a = -8.3, the expression 0.6a + 0.4(a - 55) evaluates to -23.66.