3 years ago

Subtract.

Mathematics

2 answers:

Sati [7]3 years ago

8 0

.63-(-9.85)= 10.48 I hope this helped. :)

Igoryamba3 years ago

4 0

A. -10.48 is your answer because when there is subtraction and a negative you have to add.

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An airline claims that 90% of the time, its planes are on schedule. If three flights are selected at random, what is the probabi

serg [7]

1. Check the tree diagram in the picture attached.

2. The blue segment represents "on time"
The red segment represents "not on time"

3. blue - blue - red represents the case 1st on time, 2nd on time, 3rd not on time.

the combined probability is 90/100*90/100*10/100=9/10*9/10*1/10=99/1000=0.099

4. Remark with a tree diagram we can tell anything asked about the probability of an experiment.