Two students are to be selected at random from a class with 10 girls and 12 boys. what is the probability that both will be girl
1 answer:
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Answer:
–7x + 20
Step-by-step explanation:
(2x2 – 3x)(3x2 + 2x – 1)
(4 – 3x)(2x + 5)
(4*2x) + (4*5) + (–3x*2x) + (–3x*5)
8x + 20 –15x
–7x + 20
Answer:
1 hour and 42.85 minutes.
Step-by-step explanation:
It is found from the process of reviewing that experience survey a roadbed in 3 hours.
Hence, in 1 hour the experience survey of the roadbed.
Again, it is found that the apprentice survey needs 4 hours to survey the same stretch of road.
So, in 1 hour the apprentice survey does of the roadbed survey.
If they work together then in 1 hour, the survey work will be done by ()=
parts.
Therefore, the total survey they will complete working together in hours i.e. 1 hour and 42.85 minutes. (Answer)