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goldfiish [28.3K]
3 years ago
13

I WILL GIVE THE BRAINLIST V2

Mathematics
2 answers:
lys-0071 [83]3 years ago
8 0

Answer:

c

Step-by-step explanation:

i think

Olenka [21]3 years ago
5 0

Answer:

C

Step-by-step explanation:

I) Make an equation:

Since the entrance fee is $15 and the cost per ticket is $2, our equation would be:

y = 15 + 2x

II) Test equation on the values:

y = 15 + 2x is true for all rows. Choose C.

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Kylie starts with $145 in her piggy bank. Each month she adds $20.
djverab [1.8K]

Kylie's first month collection, a1= $ 145

Second month collection , a2= $145+ 20

Third month collection, a3  = $145 +2*20

.

.

.

.

so for n months collection = an-1+20

We get an= 20 + an-1  and a1=145


4 0
3 years ago
6,600,000,000 exponential notation
jeyben [28]

Answer:

6.6 x 10^9

Step-by-step explanation:

8 0
2 years ago
What is negative 2 - 2/3?
sergey [27]

Answer:

-2.66666666667

or just

-2.67

Step-by-step explanation:

5 0
2 years ago
Solve and check.<br> 1. d - 6 = 33<br> 6-6
AVprozaik [17]
Start off by adding 33 + 6 which is 36 and so that’s how you find what d equals
3 0
3 years ago
The shape of the distribution of the time required to get an oil change at a 20 minute oil change facility. However, records ind
Katyanochek1 [597]

Answer:

For a mean oil change time of 20.51 minutes there would be a​ 10% chance of being at or​ below

Step-by-step explanation:

To solve this question, we need to understand the normal probability distribution and the central limit theorem.

Normal probability distribution

Problems of normally distributed samples are solved using the z-score formula.

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.

Central Limit Theorem

The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean \mu and standard deviation \sigma, the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean \mu and standard deviation s = \frac{\sigma}{\sqrt{n}}.

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

In this problem, we have that:

\mu = 21.3, \sigma = 3.9, n = 40, s = \frac{3.9}{\sqrt{40}} = 0.6166

Treating this as a random​ sample, at what mean​ oil-change time would there be a​ 10% chance of being at or​ below?

This is the 10th percentile, which is X when Z has a pvalue of 0.1. So it is X when Z = -1.28.

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

By the Central Limit Theorem

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

-1.28 = \frac{X - 21.3}{0.6166}

X - 21.3 = -1.28*0.6166

X = 20.51

For a mean oil change time of 20.51 minutes there would be a​ 10% chance of being at or​ below

6 0
3 years ago
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