Question

3,8 m - (2,8 m + 0,7 m) при m = 2,4; 8,5;

Answer 1

3,8m-(2,8m+0,7m)= 3,8m-3,5m=0,3m
Теперь подставим.
0,3*2,4=0,72
0,3*8,5=2,55

Answer 2

To solve the expression 3.8m - (2.8m + 0.7m), we need to substitute the given values of m and simplify the expression.

For m = 2.4:

3.8m - (2.8m + 0.7m) = 3.8(2.4) - (2.8(2.4) + 0.7(2.4)) = 9.12 - (6.72 + 1.68) = 9.12 - 8.4 = 0.72

For m = 8.5:

3.8m - (2.8m + 0.7m) = 3.8(8.5) - (2.8(8.5) + 0.7(8.5)) = 32.3 - (23.8 + 5.95) = 32.3 - 29.75 = 2.55

Therefore, the value of the expression 3.8m - (2.8m + 0.7m) for m = 2.4 is 0.72 and for m = 8.5 is 2.55.