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2 years ago

12

Use the distributive property to remove the parentheses. -8(-v(3)-3+6x(3)) The 3 in their own parenthesis are the power of 3

1 answer:

Ainat [17]2 years ago

6 0

Answer:

8v^3+24-48x^3

Distribute the -8 to each term to get your answer.

Hope I helped!

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Triunghiul si elementele lui<br> Geometrie Clasa a -7 ex.11 p.154

Diano4ka-milaya [45]

<span>que debería haber escrito sólo el problema para nosotros tal vez podríamos haber ayudado a continuación .</span>

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3 years ago

On a coordinate plane, a line goes through (negative 3, negative 3) and (negative 1, 5).

slega [8]

Answer:

y=20

x=4

Step-by-step explanation:

Since you can plug the first 2 coordinates into the slope equation ( $\frac{y_{2}-y_{1}}{x_{2} -x_{1} }$ ) you will get 4 for the slope so for the equation for the parallel line you would get y=4x+4 and since the x=4 you could plug that in and you would get y=20 and x=4

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2 years ago

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Determine the commutators of the operators a and a+,where a = (x + ip)/2 ^1/2 and a+ = (x - ip)/ 2 ^1/2

Vsevolod [243]

Answer:

Given that:

$a = (\frac{x+ip}{2})^{\frac{1}{2}}$ and $a+= (\frac{x-ip}{2})^{\frac{1}{2}}$

if a , a+ commutator, it obeys $aa^+ = a^+a$

First find:

$aa^+ = (\frac{x+ip}{2})^{\frac{1}{2}} (\frac{x-ip}{2})^{\frac{1}{2}}$

= $(\frac{(x)^2-(ip)^2}{4})^{\frac{1}{2}}=(\frac{(x)^2+(p)^2}{4})^{\frac{1}{2}}$

Now;

$a^+a =(\frac{x-ip}{2})^{\frac{1}{2}} (\frac{x+ip}{2})^{\frac{1}{2}} = (\frac{(x)^2-(ip)^2}{4})^{\frac{1}{2}}$

= $(\frac{(x)^2-(ip)^2}{4})^{\frac{1}{2}}=(\frac{(x)^2+(p)^2}{4})^{\frac{1}{2}}$

therefore, $aa^+ = a^+a$ which implies the operators a and a+ are commutators.

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3 years ago

8. If 30 cents out of every 1 dollar goes to taxes and the rest is net income, what's the

aniked [119]

Answer:

D. 3:7

Step-by-step explanation:

1 dollar = 30 cents tax + 70 cents net income

<u>The ratio of taxes to net income:</u>

30 : 70 =
3 : 7

Correct choice is D

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2 years ago

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solmaris [256]

Do you have a picture

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1 year ago

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