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4 years ago

Representa este conjunto de números racionales en una recta numérica ordenalos de mayor a menor

Mathematics

1 answer:

Gre4nikov [31]4 years ago

4 0

Esta es la respuesta para A: 7/2, 3/2, 2.5/2, -9/2, -11/2

B. 15/6, 6.7/6, 6.5/6, 6.11/6, 1/6

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2) 4 - 12 + 36 – 108..., n = 9 A) 1 B) 19684 C) 23218 D) 21549

AlekseyPX

I think the answer is A

3 0

4 years ago

Read 2 more answers

Write the given expression as an algebraic expression in x. tan(2 cos^-1(x))

miv72 [106K]

$\bf tan\left[ 2cos^{-1}(x) \right]\implies tan\left[ 2cos^{-1}\left( \frac{x}{1} \right) \right]
\\\\\\
\textit{if we say }cos^{-1}\left( \frac{x}{1} \right)=\theta\textit{ that means }tan\left[ 2cos^{-1}\left( \frac{x}{1} \right) \right]\iff tan(2\theta)\\\\
-----------------------------\\\\
cos^{-1}\left( \frac{x}{1} \right)=\theta\implies cos(\theta)=\cfrac{x}{1}\cfrac{\leftarrow adjacent=a}{\leftarrow hypotenuse=c}\\\\
-----------------------------\\\\
$

$\bf \textit{again, using the pythagorean theorem to get the opposite side}
\\\\\\
c^2=a^2+b^2\implies \pm\sqrt{c^2-a^2}=b\implies \pm\sqrt{1^2-x^2}=b
\\\\\\
\pm\sqrt{1-x^2}=b\\\\
-----------------------------\\\\
tan(2\theta)=\cfrac{2tan(\theta)}{1-tan^2(\theta)}\implies tan(2\theta)=\cfrac{2\cdot \frac{\pm\sqrt{1-x^2}}{x}}{1-\left( \frac{\pm\sqrt{1-x^2}}{x} \right)^2}
\\\\\\$

$\bf tan(2\theta)=\cfrac{\frac{\pm2\sqrt{1-x^2}}{x}}{1-\frac{1-x}{x}}\implies 
tan(2\theta)=\cfrac{\frac{\pm2\sqrt{1-x^2}}{x}}{\frac{x-1+x}{x}}
\\\\\\
tan(2\theta)=\cfrac{\pm2\sqrt{1-x^2}}{x}\cdot \cfrac{x}{2x-1}
\implies 
tan(2\theta)=\cfrac{\pm 2\sqrt{1-x^2}}{2x-1}$

6 0

4 years ago

in the figure above m is parallel to the line n the measure of angle one is 40 degrees what is the measure of angle 2

Colt1911 [192]

Step-by-step explanation:

angle 2+40=180

angle 2=180-40

angle 2=140

the answer Is 140 degree

4 0

2 years ago

True or false Based on the information in the diagram abc ≅ def

3241004551 [841]

Answer:

True

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

Tom’s first mistake was made in step___

lapo4ka [179]

Answer:

OPTION F

OPTION D

Step-by-step explanation:

Tom made his first mistake in Step 4, by subtracting 2.

After Step 3, he should have added 2 on both sides i.e.,

x = 4y - 2 should have become x + 2 = 4y - 2 + 2

⇒ x + 2 = 4y

So, in order to correct his mistake, he should add 2 on both the sides of the equation.

4 0

3 years ago