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3 years ago

Use the quadratic formula to solve the following quadratic equation: 8x²-50x+33

Mathematics

1 answer:

Sladkaya [172]3 years ago

7 0

Answer:

I am sure that it is x= 11/2 , 3/4

Step-by-step explanation:

If this helps mark as brainllest!!!

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What is the prime factorization of 120?

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A is the answer hdndnbdbfb

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3 years ago

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in a town, 11 000 people out of the total population of 50 000 are aged under 18. What percentage of the population is aged unde

Katen [24]

Answer:

22%

Step-by-step explanation:

1- 11000/50000 = 0.22

2- 0.22 x 100 = 22%

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3 years ago

Which of the following expressions are factors of 25x^3−75x^2−9x+27?

Natali [406]

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3 years ago

State the domain and range for the function f(x) = –x^2 5.

katrin2010 [14]

Domain is all real numbers.
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3 years ago

Question 5: prove that it’s =0

mamaluj [8]

Answer:

Proof in explanation.

Step-by-step explanation:

I'm going to attempt this by squeeze theorem.

We know that $\cos(\frac{2}{x})$ is a variable number between -1 and 1 (inclusive).

This means that $-1 \le \cos(\frac{2}{x}) \le 1$ .

$x^4 \ge 0$ for all value $x$ . So if we multiply all sides of our inequality by this, it will not effect the direction of the inequalities.

$-x^4 \le x^4 \cos(\frac{2}{x}) \le x^4$

By squeeze theorem, if $-x^4 \le x^4 \cos(\frac{2}{x}) \le x^4$

and $\lim_{x \rightarrow 0}-x^4=\lim_{x \rightarrow 0}x^4=L$ , then we can also conclude that $\im_{x \rightarrow} x^4\cos(\frac{2}{x})=L$ .

So we can actually evaluate the "if" limits pretty easily since both are continuous and exist at $x=0$ .

$\lim_{x \rightarrow 0}x^4=0^4=0$

$\lim_{x \rightarrow 0}-x^4=-0^4=-0=0$ .

We can finally conclude that $\lim_{\rightarrow 0}x^4\cos(\frac{2}{x})=0$ by squeeze theorem.

Some people call this sandwich theorem.

6 0

3 years ago