Step-by-step explanation:
let no. of hours be x.
45x - 12 ≥ 117
45x ≥ 129
x ≥ 2.8667 (5sf)
therefore, 3 hours (round up to next whole number).
Topic: inequalities
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Answer:
57.8125% or approx. 57.8%
Step-by-step explanation:
There is a 1/4, or 25%, or 0.25 chance that an egg has salmonella.
Thus, there is a 75%, or 0.75 chance that an egg DOESN'T contain salmonella.
Let's find the probability that all 3 of Larry's eggs are free from salmonella. Larry would have to hit that 75% chance 3 times in a row. The chance of that happening is:
0.75 * 0.75 * 0.75 =
= 0.421875
From this, we can deduce that if there is a 0.421875 (42.1875%) chance that all eggs are safe to eat, there must be a...
1 - 0.421875 = 0.578125
...0.578125 (57.8125%) chance that 1 or more of Larry's eggs do have salmonella.
Answer: approx. 57.8% or 57.8125%
Answer:
54/7
Step-by-step explanation:
- Use the KCF method - Keep, Change, Flip
- 6 divided by 7/9 is just 6/1 divided by 7/9
- You can keep 6/1 as the way it is
- Next, you change the sign from division to multiplication
- Lastly, you flip 7/9 to 9/7
- It will now change from 6 divided by 7/9 to 6/1 x 9/7
- You now multiple 9 x 6 which is 54 and divide by 7
- You cannot simplify further so the answer is 54/7
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Answer:
A
Step-by-step explanation: