Reyna has 7 coins worth 5 cents each and 3 coins worth 10 cents each.
2 answers:
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Answer:
(a) -3.708
(b) 1.706
(c) 0.490
Step-by-step explanation:
The z-score of normal distribution is given as:
(a)
Given:
Score is,
Mean value is,
Standard deviation is,
z-score is,
(b)
Given:
Score is,
Mean value is,
Standard deviation is,
z-score is,
(c)
Given:
Score is,
Mean value is,
Standard deviation is,
z-score is,
<h2>Answer:</h2>
The values of sinθ and tanθ are:
and
It is given that:
where
i.e. the angle θ lie in the second quadrant.
Also, we know that in the second quadrant sine and cosecant function is positive.
whereas cosine,secant, tangent and cotangent functions are negative.
Now, we know that:
i.e. here
Hence, we have:
Also,
Now, on rationalizing we have: