mary is eighteen years older than her son. she was three times as old as he was one year ago.How old are they now?
1 answer:
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N=4.5 In the picture are the steps you should follow to solve for n.
Answer:
And i fwe look into the normalstandar dtable we can find the desired probability:
And then the The area to the right of z = 1.51 is 0.0655
Step-by-step explanation:
For this case we want to find the following probability:
And for this case we can use the normal standard distribution and the complement rule and we have this:
And i fwe look into the normalstandar dtable we can find the desired probability:
And then the The area to the right of z = 1.51 is 0.0655