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BabaBlast [244]
3 years ago
9

I need help to find the sequence. Please Help

Mathematics
1 answer:
I am Lyosha [343]3 years ago
3 0

Answer:

t1 =  7

t2= 10

t3 = 13

tn+1 = 3n+7

tn+1 -tn =3

Step-by-step explanation:

tn = 3n+4

Let n =1

t1 = 3(1) +4 = 7

Let n =2

t2 = 3(2) +4 = 6+4  = 10

Let n=3

t3 = 3(3)+4 = 9+4 = 13

Let n=n+1

tn+1 = 3(n+1)+4 = 3n+3+7 = 3n+7

Now we need to find t n+1 - tn  

tn+1 -tn = 3n+7 - (3n+4)

Distribute the minus sign

            = 3n+7-3n-4

            3

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Answer:

Test scores of 10.2 or lower are significantly low.

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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:

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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 problem, we have that:

\mu = 20.6, \sigma = 5.2

Significantly low:

Z-scores of -2 or lower

So scores of X when Z = -2 or lower

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

-2 = \frac{X - 20.6}{5.2}

X - 20.6 = -2*5.2

X = 10.2

Test scores of 10.2 or lower are significantly low.

Significantly high:

Z-scores of 2 or higher

So scores of X when Z = 2 or higher

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2 = \frac{X - 20.6}{5.2}

X - 20.6 = 2*5.2

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Step-by-step explanation:

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Answer:

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If two variables are proportional then

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where,

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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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