Question

0,7с*0,8 если с=0,3 6,8р-6,7р если р=19

Answer 1

0,7*0,3*0,8=0,168
1)0,7*0,3=0,21
2)0,21*0,8=0,168

6,8*19-6,7*19=1,9
1)6,8*19=129,2
2)6,7*19=127,3
3)129,2-127,3=1,9

Answer 2

To evaluate the expressions, let's substitute the given values for 'с' and 'р' and perform the calculations:

1. 0.7с * 0.8 with с = 0.3: 0.7 * 0.3 * 0.8 = 0.168

2. 6.8р - 6.7р with р = 19: 6.8 * 19 - 6.7 * 19 = (129.2 - 126.7) = 2.5

So, the results are:

1. 0.7с * 0.8 with с = 0.3 is equal to 0.168.
2. 6.8р - 6.7р with р = 19 is equal to 2.5.