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3 years ago

10 exponent negative 9 divided by 10 exponent negative 3

1 answer:

8 0

$\frac{x^a}{x^b}=x^{a-b} \\ x^{-a}= \frac{1}{x^a} \\ \\ \\ \frac{10^{-9}}{10^{-3}} =10^{-9-(-3)}=10^{-9+3}=10^{-6}= \frac{1}{10^6} = \frac{1}{1000000} =0,000001$

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mixer [17]

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3 years ago

Given sin theta=5/13 and cos theta=12/13, which of the following can be proven using a Pythagorean identity?

ZanzabumX [31]

Answer:

4th option

Step-by-step explanation:

given

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2 years ago

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ki77a [65]

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3 years ago

4x+15 what is the value of X

Setler [38]

Answer:

No solution

Step-by-step explanation:

4x+15 doesn't equal anything so it's impossible to solve.

Unless you forgot to add what it equals I can't solve it for you :(

3 0

3 years ago

Read 2 more answers

The ratio of a number and 18 is equal to the difference of a number squared and 5

boyakko [2]

Answer:

The number is 2.26

Step-by-step explanation:

Let The given numbers be x

Now according to question :

x : 18 = x² - 5

I.e x = 18 × ( x² - 5 )

or, x = 18 × x² - 90

or, 18 x² - x - 90 = 0

Or, From quadratic equation , the value of x

x = $\frac{-b\pm \sqrt{b^{2}-4\times a\times c}}{2\times a}$

Or, x = $\frac{+\pm \sqrt{-1^{2}-4\times 18\times -90}}{2\times 18}$

Or, x = $\frac{1\pm \sqrt{6481}}{36}$

So, x = $\frac{1\pm 80.50}{36}$

∴ x = $\frac{81.50}{36}$ = 2.26

Hence The number is 2.26 Answer

8 0

3 years ago