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liberstina [14]
3 years ago
10

Write an inequality to represent “three less than twice a number is at least negative one”

Mathematics
1 answer:
Drupady [299]3 years ago
7 0
2x - 3 > -1 

Three less refers to the negative 3, twice a number refers to 2x, and at least negative one is > 1.
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In a certain​ city, the average​ 20- to​ 29-year old man is 69.8 inches​ tall, with a standard deviation of 3.2 ​inches, while t
rodikova [14]

Answer:

the man

Step-by-step explanation:

The wording "relatively taller" in this context is presumed to be a reference to the corresponding percentile or z-score. By hand, the z-score is easier to calculate.

z = (x - μ)/σ

For the man,

... z = (75 -69.8)/3.2 = 1.625

For the woman,

... z = (70 -64.3)/3.9 ≈ 1.462

The man's z-score is higher, so he is taller than a larger percentage of the male population than the woman is of the female population.

___

If you're doing this by calculator, you can let it show you the percentile rank of each height. The man is in the 95th percentile; the woman the 93rd percentile. So, the man is relatively taller.

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3 years ago
Logan invested $180 in an account paying an interest rate of 2,6% compounded
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Answer:

A≈<u>250</u>

Step-by-step explanation:

3 0
2 years ago
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tonya is twice kevin's age. in three years tonya will be 17. and in another three years, uncle rob will be three times tonyas ag
atroni [7]
Tonya is 14 (17 - 3) 
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3 years ago
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A researcher is interested in determining if the more than two thirds of students would support making the Tuesday before Thanks
klio [65]

Answer:

a. p = the population proportion of UF students who would support making the Tuesday before Thanksgiving break a holiday.

Step-by-step explanation:

For each student, there are only two possible outcomes. Either they are in favor of making the Tuesday before Thanksgiving a holiday, or they are against. This means that we can solve this problem using concepts of the binomial probability distribution.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

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

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

And p is the probability of X happening.

So, the binomial probability distribution has two parameters, n and p.

In this problem, we have that n = 1000 and p = \frac{700}{1000} = 0.7. So the parameter is

a. p = the population proportion of UF students who would support making the Tuesday before Thanksgiving break a holiday.

8 0
3 years ago
What is the square root of 98/2
timurjin [86]

Answer:

7

Step-by-step explanation:

\sqrt{ \frac{98}{2} }  =  \sqrt{49 }  = 7

I hope it helped you

8 0
1 year ago
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