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3 years ago

Which of the following is not a quadratic function

Mathematics

1 answer:

Pepsi [2]3 years ago

3 0

Answer:

option B

Step-by-step explanation:

because quadratic equation means x^2+ or -ax+ or-b

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Which set of points lies on the given graph

zavuch27 [327]

Answer:

the first answer choice

Step-by-step explanation:

all you have to do is go through every answer choice and use the process of elimination to find the answer

7 0

3 years ago

The following formula for the sum of the cubes of the first n integers is proved in Appendix E. Use it to evaluate the limit in

Marina86 [1]

Answer:

$\lim_{n\to\infty} (1+ \frac{2}{n} +\frac{1}{n^2})$

And when we apply the limit we got that:

$\lim_{n\to\infty} (1+ \frac{2}{n} +\frac{1}{n^2}) =1$

Step-by-step explanation:

Assuming this complete problem: "The following formula for the sum of the cubes of the first n integers is proved in Appendix E. Use it to evaluate the limit . 1^3+2^3+3^3+...+n^3=[n(n+1)/2]^2"

We have the following formula in order to find the sum of cubes:

$\lim_{n\to\infty} \sum_{n=1}^{\infty} i^3$

We can express this formula like this:

$\lim_{n\to\infty} \sum_{n=1}^{\infty}i^3 =\lim_{n\to\infty} [\frac{n(n+1)}{2}]^2$

And using this property we need to proof that: 1^3+2^3+3^3+...+n^3=[n(n+1)/2]^2

$\lim_{n\to\infty} [\frac{n(n+1)}{2}]^2$

If we operate and we take out the 1/4 as a factor we got this:

$\lim_{n\to\infty} \frac{n^2(n+1)^2}{n^4}$

We can cancel $n^2$ and we got

$\lim_{n\to\infty} \frac{(n+1)^2}{n^2}$

We can reorder the terms like this:

$\lim_{n\to\infty} (\frac{n+1}{n})^2$

We can do some algebra and we got:

$\lim_{n\to\infty} (1+\frac{1}{n})^2$

We can solve the square and we got:

$\lim_{n\to\infty} (1+ \frac{2}{n} +\frac{1}{n^2})$

And when we apply the limit we got that:

$\lim_{n\to\infty} (1+ \frac{2}{n} +\frac{1}{n^2}) =1$

3 0

3 years ago

How can you check if two fractions are equivalent?

zimovet [89]

Step-by-step explanation:

Say you have these 2 fractions

$\frac{a}{b} .........\frac{c}{d}$

Cross multiply as following;

$\frac{(b)(c)}{(a)(d)}=\frac{bc}{ad}$

If in the end, both numerator and denominator are equal, then the fractions are equivalent.

Examples:

Example 1

$\frac{20}{24}...........\frac{5}{6}$

Cross multiply

$\frac{(24)(5)}{(20)(6)}=\frac{120}{120}$

They're equivalent.

Example 2

$\frac{20}{24}........\frac{3}{4}$

Cross multiply

$\frac{(24)(3)}{(20)(4)} =\frac{72}{80}$

They're not equivalent.

5 0

3 years ago

Please answer this correctly

wolverine [178]

Answer:

1017.36 square miles

Step-by-step explanation:

Since the diameter of a circle is twice the radius, the radius of this circle is 36/2=18. Since the area of a circle is $\pi r^2$ , the area of this circle is: