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marissa [1.9K]
3 years ago
8

How would you graph (on a number line) (x-8)(x-8)<0??

Mathematics
1 answer:
Marta_Voda [28]3 years ago
5 0

Answer:

  The graph is the empty number line (no solution)

Step-by-step explanation:

Your expression is (x-8)² < 0. There are no real numbers that give a negative value when squared. There is NO SOLUTION. The graph is empty.

_____

<em>Comment on quadratic inequalities</em>

In general the inequality (x-a)(x-b) < 0 will have a solution when one factor is negative and the other is positive. In general, that will be the case for values of x that are strictly between <em>a</em> and <em>b</em>. In your inequality, that would require you graph numbers that are between 8 and 8. There are none.

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In a health club, research shows that on average, patrons spend an average of 42.5 minutes on the treadmill, with a standard dev
Paha777 [63]

Answer:

0.3114

Option d is right

Step-by-step explanation:

Let X be the time spent on a treadmill in the health club

Given that  research shows that on average, patrons spend an average of 42.5 minutes on the treadmill, with a standard deviation of 5.4 minutes

Also given that X is normal

the probability that randomly selected individual would spent between 30 and 40 minutes on the treadmill.

= P(30

round off to two decimals tog et

the probability that randomly selected individual would spent between 30 and 40 minutes on the treadmill is 0.31

Hence option d is right

3 0
3 years ago
A company has a policy of retiring company cars; this policy looks at number of miles driven, purpose of trips, style of car and
vredina [299]

Answer:

2.35%

Step-by-step explanation:

Mean number of months (M) = 39 months

Standard deviation (S) = 10 months

According to the 68-95-99.7 rule, 95% of the data is comprised within two standard deviations of the mean (39-20 to 39+20 months), while 99.7% of the data is comprised within two standard deviations of the mean (39-30 to 39+30 months).

Therefore, the percentage of cars still in service from 59 to 69 months is:

P_{59\ to\ 69}=\frac{P_{9\ to\ 69}-P_{19\ to\ 59}}{2} \\P_{59\ to\ 69}=\frac{99.7-95}{2}\\P_{59\ to\ 69}=2.35\%

The approximate percentage of cars that remain in service between 59 and 69 months is 2.35%.

8 0
3 years ago
write the point slope form of an equation of the line that passes through (-2 5) and has an undefined
Nana76 [90]

Answer:

  no solution

Step-by-step explanation:

Any of the "-slope" or "slope-" formulas for a line cannot be used when the slope is undefined.

The equation of the desired line is x = -2. It cannot be put into the form y = ....

3 0
3 years ago
Is 34515 divisible my 9
ratelena [41]

Answer:

Yes, the answer would be 3835

Step-by-step explanation:

34515 divided by 9 is simply 3835

3 0
3 years ago
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tankabanditka [31]

Ok I will help you. This middle school?

5 0
3 years ago
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