So 7 x = x2 -18 so you get the quadratic x^2 -7x -18 and then get 2 x -9= -18 and 2 + -9 = -7 so you get (x + 2) ( x - 9) so the positive solution would be x-9 = 0 so x= 9. Hope this helps :)
Answer:
0.6804
Step-by-step explanation:
Given that Margie is practicing for an upcoming tennis tournament. Her first serve is good 20 out of 30 times on average.
Since each trial is independent and there are two outcomes, X no of good serves is binomial with n=6 and p =2/3
Required probability
= Prob that atleast four of 6 times good serve
=
=
Formula used:
P(X=r) =
12 to 16 pounds Im not very good at math but I hope this helps
The cost of each turkey, if each is a smudge that represents some unreadable digit is $0.94
<h3>Cost of each turkey</h3><h3 />
- Total number of turkey bought = 72
- Total cost = $67.9
Cost of each turkey = Total cost / Total number of turkey bought
= 67.9 / 72
= 0.943055555555555
Approximately,
Cost of each turkey = $0.94
Therefore, the cost of each turkey, if each is a smudge that represents some unreadable digit is $0.94
Learn more about unit rate:
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