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3 years ago

Solve for x. You must write you answer in fully simplified form. -11 = -8x

Mathematics

2 answers:

VLD [36.1K]3 years ago

4 0

inproper fraction form:

$x=\frac{11}{8}$

Decimal form:

$x=1.375$

Mixed number form:

$x=1\frac{3}{8}$

Hope this helps :)

Travka [436]3 years ago

3 0

Answer:

1.375 = x or 1.4 = x

If you need to round it then it would be 1.4 = x

Step-by-step explanation:

Divide both sides by -8

$\frac{-11}{-8}$ = $\frac{-8x}{-8}$

You end up with 1.375 = x

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First derivative of <br>√{cosec2x).show with full step.

Mice21 [21]

Answer:

$- \sf \displaystyle \: \frac{ \cos(2x) }{ \sin ^{2} (2x)\sqrt{ \csc(2x) } }$

Step-by-step explanation:

we are given a derivative

$\displaystyle \: \frac{d}{dx} ( \sqrt{ \csc(2x) } )$

and said to figure out the first derivative

to do so

recall chain rule:

$\sf\displaystyle \: \frac{d}{dx} (f(g(x)) = \frac{d}{dg} (f(g(x)) \times \frac{d}{dx} (g)$

so we get

$\displaystyle \: g(x) = \csc(2x)$

rewrite the derivative using the chain rule:

$\displaystyle \: \frac{d}{dg} ( \sqrt{ g } ) \times \frac{d}{dx} ( \csc(2x) )$

use square root derivative rule to simplify:

$\displaystyle \: \frac{1}{ 2\sqrt{g} } \times \frac{d}{dx} ( \csc(2x) )$

now we need to again use chain rule composite function derivative to simplify

where we'll take a new function n so we won't mess up two g's and we'll take 2x as n

use composite function derivative to simplify:

$\sf \displaystyle \: \frac{1}{ 2\sqrt{g} } \times \frac{d}{dn}( \csc(n) ) \times \frac{d}{dx} (2x)$

use derivative formula to simplify derivatives:

$\sf \displaystyle \: \frac{1}{ 2\sqrt{g} } \times - \cot(n) \csc(n) \times 2$

substitute the value of n:

$\sf \displaystyle \: \frac{1}{ 2\sqrt{g} } \times - 2\cot(2x) \csc(2x)$

substitute the value of g:

$\sf \displaystyle \: \frac{1}{ 2\sqrt{ \csc(2x) } } \times - 2\cot(2x) \csc(2x)$

now we need our trigonometric skills to simplify

rewrite cot and csc:

$\sf \displaystyle \: \frac{1}{ 2\sqrt{ \csc(2x) } } \times - 2 \dfrac{ \cos(2x) }{ \sin(2x) } \dfrac{1}{ \sin(2x) }$

simplify multiplication:

$\sf \displaystyle \: \frac{1}{ \cancel{ \: 2}\sqrt{ \csc(2x) } } \times \cancel{- 2} \dfrac{ \cos(2x) }{ \sin ^{2} (2x) }$

simplify multiplication:

$- \sf \displaystyle \: \frac{ \cos(2x) }{ \sin ^{2} (2x)\sqrt{ \csc(2x) } }$

4 0

3 years ago

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Work out the size of angle x.<br>

Dmitry_Shevchenko [17]

Answer:X3

Step-by-step explanation:UwU ＝(￣□￣;)⇒

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4 years ago

Read 2 more answers

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Lapatulllka [165]

Area would be 4.52 A= pi x radius squared
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4 0

3 years ago

What is the simplified form of this expression?

Alexxx [7]

Answer:

Option 4

Step-by-step explanation:

=> $-3x^2+2x-4 + 4x^2+5x+9$

Combining like terms

=> $-3x^2+4x^2+2x+5x-4+9$

=> $x^2+7x+5$

5 0

3 years ago

Solve for x.<br>– 6 = - 4/x

Law Incorporation [45]

Answer:

2/3 or in decimal form which is 0.6

Step-by-step explanation:

7 0

3 years ago