To do this, multiply each of the four elements in matrix D by -1/2 or -0.5:
| 9 8 |
| -7 -4 |
There are 6 red tiles since 6 is half of 12. 1/4 of 12 is 3 (divide 12 by 4), so there are 3 green tiles and 3 yellow tiles
Answer:
0.998272 (0.998 in 3sf)
Step-by-step explanation:
Probability(detects) = 0.88
Probability(doesn't detect) = 1 - 0.88 = 0.12
Total probability is always 1
Probability of atleast one detecting = 1 - probability(all not detecting)
= 1 - (0.12×0.12×0.12)
= 1 - 0.001728
= 0.998272
