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4 years ago

9/2 divided by 2/9 equals??

1 answer:

8 0

$\frac{\frac{9}{2}}{\frac{2}{9}}$ Invert the bottom, and multiply it with the top. You now have $\frac{9}{2} * \frac{9}{2}$ which is equal to $\frac{81}{4}$

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How can i do this?<br> I need do this

Wittaler [7]

It's a little hard to read, but I think I can help you.

a) (2^9*2^11*2^3)/(2^7)^3

(2^(9+11+3))/(2^(7*3)) Remember (a^b)^c=a^(b*c) and a^b*a^c=a^(b+c)

2^23/2^21

2^(23-21) <- Exponents with the same base when divided get subtracted

2^2

4 is the answer

b) ((0.4^2)^10)/(0.4^9*0.4^7*0.4)

0.4^(2*10)/0.4^(9+7+1)

0.4^20/0.4^17

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0.064 is the answer

7 0

3 years ago

Solve 3x^2 + 6x+15=0

Elden [556K]

Answer:

The solution of given equation is ( - 1 + 2 i ) , ( - 1 - 2 i )

Step-by-step explanation:

Given equation as :

3 x² + 6 x +15 = 0

The value of x fro the quadratic equation a x² + b x + c = 0 is obtained as

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

So , from given eq , the value of x is now obtain as

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

Or, x = $\frac{-6\pm \sqrt{6^{2}-4\times 3\times 15}}{2\times 3}$

Or, x = $\frac{\sqrt{-144} }{6}$

∴ x = ( - 1 + 2 i ) , ( - 1 - 2 i )

Hence The solution of given equation is ( - 1 + 2 i ) , ( - 1 - 2 i ) Answer

6 0

4 years ago

HELP PLZ ASAP!!!!!!!!!!!<br> THX

Evgen [1.6K]

12.5% are quarters and 50% are dimes

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3 years ago

1 find the value of this question

antiseptic1488 [7]

Answer:

$\sqrt{176+\sqrt{2401} }$

= $\sqrt{176+\sqrt{49*49} }$

= $\sqrt{176+49}$

= $\sqrt{225}$

= $\sqrt{15*15}$

=15

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

3/2X5/3=<br> I need help! With tris problem.

Feliz [49]

Answer:

5/2 is the answer......

Step-by-step explanation:

Hope it helps......

3 0

3 years ago

Read 2 more answers