This is equivalent to -1 ( 4 - 3 )
which simplified is -1
because 4-3 is 1 and 1 times -1 is -1
Hope this helps ;)
If you put them into to proportion
156/400 and then put a variable for the unknown x/1200
1200 divided by 400 = 3
156 times 3 = 468
468 order salad out of 1200
579 adults and 190 children I’m pretty sure this is right
Answer:
F= 4 4/6
Step-by-step explanation:
Lets break it down
3 1/6 + f - 7 5/6
3 plus what equals 7 answer 4!
1/6 pls how many more sixths equals 5/6th answer 4/6 ths
so overall you combine the two answers for whole and fraction an
Answer:
it saves 2.5 minutes
Step-by-step explanation:
The expected value of a random variable is the sum of products of possibilities and the probability of each.
Here, you have a probability of 0.9 of saving 5 minutes, and a probability of 0.1 of adding 20 minutes.
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The expected value of the shortcut is ...
0.9(-5) +0.1(20) = -4.5 +2.0 = -2.5
The shortcut is expected to save 2.5 minutes on average.
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<em>Additional comment</em>
The probability of 0.9 comes from the 9 of 10 trips that result in a time saving.