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3 years ago

What’s 9/8 - 5/12 ? Need help

Mathematics

2 answers:

nikdorinn [45]3 years ago

8 0

Answer:

0.7083

Step-by-step explanation:

IrinaK [193]3 years ago

5 0

赛欧its going 头被17/24 我还有because is that 9/8-5/12 is 17/24 in fraction form

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Solve the equation for all real values of x. cosxtanx - 2 cos x=-1

IceJOKER [234]

Solution to equation $cosxtanx - 2 cos^2 x=-1$ for all real values of x is $x=2k\pi + \frac{\pi}{6} , x=2k\pi + \frac{5\pi}{6}$ .

Step-by-step explanation:

Here we have , $cosxtanx - 2 cos^2 x=-1$ . Let's solve :

⇒ $cosxtanx - 2 cos^2 x=-1$

⇒ $cosx(\frac{sinx}{cosx}) - 2 cos^2 x=-1$

⇒ $sinx = 2 cos^2 x-1$

⇒ $sinx = 2 (1-sin^2x)-1$

⇒ $sinx = 1-2sin^2x$

⇒ $2sin^2x+sinx-1=0$

By quadratic formula :

⇒ $sinx = \frac{-b \pm \sqrt{b^2-4ac} }{2a}$

⇒ $sinx = \frac{-1 \pm \sqrt{1^2-4(2)(-1)} }{2(2)}$

⇒ $sinx = \frac{-1 \pm3}{4}$

⇒ $sinx = \frac{1}{2} , sinx =-1$

⇒ $sinx = sin\frac{\pi}{6} , sinx = sin\frac{3\pi}{2}$

⇒ $x=\frac{\pi}{6} , x=\frac{3\pi}{2}$

But at $x=\frac{3\pi}{2}$ we have equation undefined as $cos\frac{3\pi}{2}=0$ . Hence only solution is :

⇒ $x=\frac{\pi}{6}$

Since , $sin(\pi -x)=sinx$

⇒ $x=\pi -\frac{\pi}{6} = \frac{5\pi}{6}$

Now , General Solution is given by :

⇒ $x=2k\pi + \frac{\pi}{6} , x=2k\pi + \frac{5\pi}{6}$

Therefore , Solution to equation $cosxtanx - 2 cos^2 x=-1$ for all real values of x is $x=2k\pi + \frac{\pi}{6} , x=2k\pi + \frac{5\pi}{6}$ .

3 0

3 years ago

Q # 1 Graph the function Y = |X + 2| - 3

Svetllana [295]

First of all we know the Absolute Value Function that is:

$\left | x \right |= \left \{ {{x \ \ \ \ x \geq 0} \atop {-x \ \ \ \ x\ \textless \ 0}} \right.$

This is called the Parent Function of the Absolute Value Function.

From the equation:

$y=\left | x+2 \right |-3$

The term:

$\left | x+2 \right |$

means that the the Parent Function is shifted two units to the left.

On the other hand, the term:

$-3$

means that the function $\left | x+2 \right |$ is shifted three units downward. So the result is the graph shown below

4 0

3 years ago

Read 2 more answers

Check

Angelina_Jolie [31]

2x + y = badussy

hope it helps!!!

give brainliest pwease

3 0

2 years ago

What can you conclude about 3/5 and 60/100 if you know 3/5 is equivalent to 6/10 and 6/10 is equivalent to 60/100

labwork [276]

First we check whether $\frac{3}{5}$ is equivalent to $\frac{6}{10}$

$\frac{3*2}{5*2}$ = $\frac{6}{10}$

Both top and bottom are multiplied by 2 to get $\frac{6}{10}$

So they are equivalent fractions.

Now we check whether $\frac{6}{10}$ is equivalent to $\frac{60}{100}$

$\frac{6*10}{10*10}$ = $\frac{60}{100}$

Both top and bottom are multiplied by 10 to get $\frac{60}{100}$

So they are equivalent fractions.

$\frac{3}{5}$ = $\frac{6}{10}$ = $\frac{60}{100}$

Hence we conclude that they are equivalent fractions.

5 0

4 years ago

How do I find the ration of the first number to the second and simplify? 0.4 to 1.2

Ivanshal [37]

Answer:

1:3

Step-by-step explanation:

it is a bit easy to get it out of decimal ratio, so multiply it by 10, which gives you 4:12, so now you have a bigger answer to work with, you can divide 12 by 4, which gives you 3, and a ratio of 1:3

5 0

4 years ago

Read 2 more answers