3 years ago

What are the steps to simplifying -(x)³-x³ and what is the answer?

Mathematics

1 answer:

MArishka [77]3 years ago

7 0

Answer: D

Step-by-step explanation: common sense

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If tan ⁡x=12/5, and 0°

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The value of sin(2x) is $\frac{120}{169}$

Explanation:

Given that $tan x =\frac{12}{5}$

The formula for $sin(2x)$ is $\sin (2 x)=2 \sin x \cos x$

Since, $\tan x=\frac{o p p}{a d j}$

Also, it is given that $tan x =\frac{12}{5}$

Thus, $opp=12$ and $adj=5$

To find the hypotenuse, let us use the pythagoras theorem,

$\begin{aligned}h y p &=\sqrt{12^{2}+5^{2}} \\&=\sqrt{144+25} \\&=\sqrt{169} \\&=13\end{aligned}$

Now, we can find the value of sin x and cos x.

$\sin x=\frac{\text { opp }}{h y p}=\frac{12}{13}$

$\cos x=\frac{a d j}{h y p}=\frac{5}{13}$

Now, substituting these values in the formula for sin 2x, we get,

$\begin{aligned}\sin (2 x) &=2 \sin x \cos x \\&=2\left(\frac{12}{13}\right)\left(\frac{5}{13}\right) \\&=\frac{120}{169}\end{aligned}$

Thus, the value of sin(2x) is $\frac{120}{169}$

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3 years ago

An expression to convert 50 miles per hour to miles per minute is shown. 50 miles Over 1 hour into 1 hour Over blank minutes

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Answer:

$\frac{50 miles}{1 hour} * \frac{1 hour}{60 minutes}$

Step-by-step explanation:

Since 1 hour contains 60 minutes, So 1 hour would by divided by 60

So, the required expression is,

=> $\frac{50 miles}{1 hour} * \frac{1 hour}{60 minutes}$

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Ken painted 14 meters of fencing in 1 hour. How many centimeters of fencing can he paint in 45 minutes?

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Step-by-step explanation:

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use the elimination method to solve the system of equations choose the correct ordered pair -x + y = -2 2x - 3y = 4

mafiozo [28]

Answer:

The answer is (2, 0).

I hope this helps!

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3 years ago

Cindy is making bracelets for her mom’s garage sale. She uses 1/3 foot of red string and 3/4 foot of blue string to make each fr

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1/3 to 3/4

Step-by-step explanation:

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3 years ago