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3 years ago

Choose the graph of y = -4 cot x.

Mathematics

1 answer:

noname [10]3 years ago

7 0

Suppose y= cot x is our parent function then remember general rules of transformation.

1) y= -f(x), reflects the graph of f(x) across x-axis.

2) y= cf(x), stretches the graph of f vertically by factor of c , for c >1.

Now, apply these rules to y= -4 cot(x)

the -ve sign reflects the graph of cot(x) across x-axis and the number 4 will stretch it vertically by 4 units.

The graph of both parent function (y=cot x ) and transformed function (y= -4 cot(x)) are attached below.

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3 years ago

What is the slope of f(x)=x^2+3 when x=-1 ?

irinina [24]

F(x)=(-1)^2+3
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3 years ago

Find the 10th term of geometric sequence 3,15,75,375

Bess [88]

Answer:

Step-by-step explanation:

In a geometric sequence, the next term is a constant times the previous term. This constant is determined by dividing the second term by the first, here giving 5. The remaining terms are checked to see that each is 5 times the previous. 75 is 15×5, 375 is 75×5.

Alternately, the nth term is first term times k^(n-1).

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3 years ago

Describe how the variability of the distribution changes as the sample size increases. As the sample size increases, the variabi

wolverine [178]

Answer:

As the sample size increases, the variability decreases.

Step-by-step explanation:

Variability is the measure of actual entries from mean. The less the deviations the less would be the variance.

For a sample of size n, we have by central limit theorem the mean of sample follows a normal distribution for random samples of large size.

X bar will have std deviation as $\frac{s}{\sqrt{n} }$

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Thus we find the variability denoted by std deviation is inversely proportion of square root of sample size.

Hence as sample size increases, std error decreases.

As the sample size increases, the variability decreases.

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3 years ago

The answer is 915 / 7

Naily [24]

Answer:

If you want 915/7 simplified, it is 130.714285714.

Step-by-step explanation:

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3 years ago

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