Answer:
-18x
Step-by-step explanation:
First step: remove the parentheses.
So, you'll have -3x*6.
multiply the numbers (3 x 6 = 18)
and you'll get -18x.
hope this helps!
Answer:
C infinite solutions
Step-by-step explanation:
First put both equations in the form of y=mx+b then you will get the same equation in both. Since both equations are the same they intersect at all the points which means this system has infinite solutions.
Answer:
Not really sure what you're asking but if it's how 17 got to 21 just add 4?
Answer:
The probability that at least one internet user is more careful is 0.973
Step-by-step explanation:
We have been given that 70% of internet users are more careful about personal information when using a public wi-fi hotspot. Therefore, probability that a randomly chosen internet user is careful about the personal information would be 0.70.
We need to find the probability that among three randomly selected internet users, at least one is more careful. So, we can find the probability that none of the internet users is more careful and subtract that result from 1.
![1-C_{0}^{3}(0.70)^{0}(0.30)^{3-0}\\1-\frac{3!}{0!3!}(1)(0.30)^{3}\\1-(0.30)^{3}\\1-0.027\\0.973\\](https://tex.z-dn.net/?f=1-C_%7B0%7D%5E%7B3%7D%280.70%29%5E%7B0%7D%280.30%29%5E%7B3-0%7D%5C%5C1-%5Cfrac%7B3%21%7D%7B0%213%21%7D%281%29%280.30%29%5E%7B3%7D%5C%5C1-%280.30%29%5E%7B3%7D%5C%5C1-0.027%5C%5C0.973%5C%5C)
Therefore, the probability that at least one internet user is more careful is 0.973