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4 years ago

If n=3a-6 which inequality below will make a positive number

Mathematics

2 answers:

elena55 [62]4 years ago

8 0

The answer would be: a > 2

almond37 [142]4 years ago

4 0

Answer with Step-by-step explanation:

We are given that:

n=3a-6

We have to determine an inequality for which n is a positive number

i.e. we have to determine an inequality for which

n>0

i.e. 3a-6>0

adding 6 on both sides, we get

3a>6

dividing by 3 on both sides, we get

a>2

Hence, inequality for which n is a positive number is:

a>2

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Andru [333]

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4 years ago

n a survey of 331 customers, 66 say that service is poor. You select two customers without replacement to get more information o

yaroslaw [1]

Answer:

3.93% probability that both say service is poor

Step-by-step explanation:

A probability is the number of desired outcomes divided by the number of total outcomes.

The customers are chosen without replacement, and the order in which they are chosen is not important. So we use the combinations formula to solve this question.

Combinations formula:

$C_{n,x}$ is the number of different combinations of x objects from a set of n elements, given by the following formula.

$C_{n,x} = \frac{n!}{x!(n-x)!}$

What is the probability that both say service is poor?

Desired outcomes:

Two saying it is poor, from a set of 66. So

$D = C_{66,2} = \frac{66!}{2!(66-2)!} = 2145$

Total outcomes:

Two customers from a set of 331. So

$T = C_{331,2} = \frac{331!}{2!(331-2)!} = 54615$

Probability:

$p = \frac{D}{T} = \frac{2145}{54615} = 0.0393$

3.93% probability that both say service is poor

4 0

3 years ago

PLEASE HELPPPP I DONT KNOW HOW TO DO THIS

KonstantinChe [14]

Answer:

I'm not an expert here, this is a best guess!

But I would say if there is no chance that of him incurring excess costs of less than $500, then he knows without insurance he'll end up paying at least $500, possibly more out of pocket, without the insurance.

so I would say He ends up spending the least amount out if pocket by going with option A. for $75. that's $75 out of pocket with no deductible and it covers his $500+ in excess costs....B and C would also cover the excess, but would each cost $140 or $275 out of pocket at the end of the day....

with that being said, I'd say it's worth it to buy the insurance....even if he doesn't have any excess costs, he's spent $75 dollars for the peace of mind to know he's covered either way, and if he does incur the excess costs he's spent $75 rather that $500+....Even if the excess charges are only $100, which it says there is no chance of happening, but still, then he's still saved $25 altogether. Unless I'm reading it wrong, Option A saves him the most money either way, and is worth it to buy the insurance!

3 0

3 years ago

The sum of 5.9 and -7.2 is <br>positive <br>zero <br>negative

Thepotemich [5.8K]

Answer:

Negative

Step-by-step explanation:

It would be -1.3. Because you know? You add?

4 0

3 years ago

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