0.79 x 0.46+7.9x 0.24+ 1 1.4x 0.079
= 0.79 x 0.46+0.79 x 2.4+ 1. 14x 0.79
= 0.79 x(0.46+2.4+ 1. 14)
=0.79X4
=3. 16
2 、
B is 10 times that of a.
b:7.02/( 1- 1/ 10)= 7.02/9/ 10 = 7.8。
A: 0.78
3 、
0.9999 x 0.7+0. 1 1 1 1x 2.7
= 0. 1 1 1 1x9x 0.7+0. 1 1 1 1x 2.7
= 0. 1 1 1 1X(6.3+2.7)
= 0. 1 1 1 1x 9
=0.9999
This question is not very clear. Let's see if this is feasible (loop in brackets):
0. 1(99)6 >0. 1(996)>0. 19(96)>0.( 199)6
5、
199. 199× 198- 198. 198× 199
= 199. 199× 198- 198. 198× 198 - 198. 198
= 198× 1.00 1- 198. 198
=0
It's best to think for yourself, the topics are all of the same type.