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dezoksy [38]
3 years ago
6

Tell whether the given value is a solution of the inequality. N + 12 < 4; n = -9

Mathematics
1 answer:
kap26 [50]3 years ago
6 0

Answer:

my answer will you date me I'm a girl

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In a recent study on world​ happiness, participants were asked to evaluate their current lives on a scale from 0 to​ 10, where 0
Zigmanuir [339]

Answer:

a) 8.2962

b) 6.3956

c) 3.845

Step-by-step explanation:

Z-score:

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this question, we have that:

\mu = 5.6, \sigma = 2.6

(a) What response represents the 85th ​percentile? ​

This is X when Z has a pvalue of 0.85. So X when Z = 1.037.

Z = \frac{X - \mu}{\sigma}

1.037 = \frac{X - 5.6}{2.6}

X - 5.6 = 2.6*1.037

X = 8.2962

(b) What response represents the 62nd ​percentile?

This is X when Z has a pvalue of 0.62. So X when Z = 0.306.

Z = \frac{X - \mu}{\sigma}

0.306 = \frac{X - 5.6}{2.6}

X - 5.6 = 2.6*0.306

X = 6.3956

​(c) What response represents the first ​quartile?

The first quartile is the 100/4 = 25th percentile. So this is X when Z has a pvalue of 0.25, so X when Z = -0.675.

Z = \frac{X - \mu}{\sigma}

-0.675 = \frac{X - 5.6}{2.6}

X - 5.6 = 2.6*(-0.675)

X = 3.845

3 0
3 years ago
#7 and I you got the answer then please explain
avanturin [10]
The total cost (considering admission and ride costs) is

admission cost + ride cost

($9.50/person)(6 persons) + ($1.50/person per ride)(6 persons)

$66 (total)
4 0
4 years ago
What is the measure of ∠PQS ?
PSYCHO15rus [73]
If you're looking for the whole angle i'm pretty sure it's 74 degrees. If you're solving for x, x=8
4 0
3 years ago
How is 0.87 rational
dmitriy555 [2]
A number is rational if it can be put into a fraction of two integers.
Since 0.87 can also be expressed as 87/100, it is rational
3 0
3 years ago
Read 2 more answers
Please help me out!!
bearhunter [10]

Answer:

294cm²

Step-by-step explanation:

Given the formula for surface area expressed as 6L^2

TSA = 6L²

Given that L = 7cm

Substitute

TSA = 6(7)²

TSA = 6 * 49

TSA = 294cm²

<em>Hence the total surface area is  294cm²</em>

3 0
3 years ago
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