3 years ago

What are the first four terms if the sequence represented by the expression n (n-1) -4?

1 answer:

5 0

We have that
<span>n (n-1) -4

for n=1
a1=1*(1-1)-4------> a1=-4

for n=2
</span>a2=2*(2-1)-4------> a2=-2

for n=3
a3=3*(3-1)-4------> a3=2

for n=4
a4=4*(4-1)-4------> a4=8

the answer is
-4,-2, 2, 8

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Answer:

17.2

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3 years ago

In December 2004, a report based on the National Survey on Drug Use and Health estimated that 20% of all Americans aged 16 to 20

o-na [289]

Answer:

542

Step-by-step explanation:

We are required to find the sample size at 98% confidence interval in this question

E = 0.04

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α = 1 - 0.98

= 0.02

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= 0.02/2 = 0.01

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Inserting values into formula:

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2 years ago