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2 years ago

Find the value of p and the value of q

Mathematics

1 answer:

vlabodo [156]2 years ago

7 0

Answer:

p = 5 and q = -3

Step-by-step explanation:

nth term = pn^2 + qn where n is the sequence number.

first term = p + q = 2.....................(1)

2nd term = p(2)^2 + 2n = 14

4p + 2q = 14

2p + q = 7 .......................(2)

Subtract equations (2) -(1) :-

p = 7 - 2 = 5

and q = 2 - 5 = -3

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2 years ago

In a recent contest, the mean score was 210 and the standard deviation was 25. a) Find the z-score of John who scored 190 b) Fin

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Step-by-step explanation:

Problems of normally distributed samples can be 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:

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

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