Answer: x < 7
Step-by-step explanation: Just like any of your two-step equations, in this inequality, start by isolating the x term which in this case is -8x by subtracting 40 from both sides.
That leaves you with -8x > -56.
To get <em>x</em> by itself, divide both sides by -8 but watch out.
If you divide both sides of an inequality by a negative,
you must switch the direction of the inequality sign.
So we have x < 7.
Answer: 52
Step-by-step explanation: PEMDAS, so you first do multiplication. 12x4 is 48. then, you divide 32/8 which is 4. Then you add them and get 52
Answer:
0.01265
Step-by-step explanation:
Since, if the time to be served has an exponential distribution with a mean of 7, then

Chance to be served in under 2 minutes:

Let A represents the number of days when a person is served in less than 2 minutes,
Hence,
the probability that a person is served in less than 2 minutes on at least 5 of the next 7 days ( using binomial distribution )
= P(A=5) + P(A=6) + P(A=7)


≈ 0.01265