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2 years ago

What is 7a to the power of 2 - 2a to the power of 2

Mathematics

2 answers:

harkovskaia [24]2 years ago

8 0

Answer:

5a to the power of 2 ofc

Step-by-step explanation:

Natasha2012 [34]2 years ago

5 0

Answer:

5a²

Step-by-step explanation:

It is 5a² because 7a² and 2a² are like terms, so we are able to subtract them. If we subtract 7-2 we get 5. It is the same thing, 7a²-2a² is equal to 5a²

Hope this helps!

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Which of these is not included in the set of rational numbers?

Sonbull [250]

Answer:

All non-terminating decimals

Step-by-step explanation:A real number has to be written a fraction form

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3 years ago

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ASAP<br><br> What is the value of x?

Savatey [412]

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3 years ago

How many solutions can be found for the equation 4z + 2(z - 4) = 3z + 11

Gnom [1K]

4z+2(z-4)=3z+11 perform indicated multiplication on left side

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So there is only one solution when z=6 1/3

4 0

3 years ago

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Evaluate tan ( cos^-1 ( 1/8 ) ) , giving your answer as an exact value (no decimals)

vekshin1

$\bf cos^{-1}\left( \cfrac{1}{8} \right)=\theta \qquad \qquad cos(\theta )=\cfrac{\stackrel{adjacent}{1}}{\stackrel{hypotenuse}{8}}\impliedby \textit{let's find the \underline{opposite}} \\\\\\ \textit{using the pythagorean theorem} \\\\ c^2=a^2+b^2\implies \sqrt{c^2-a^2}=b \qquad \begin{cases} c=hypotenuse\\ a=adjacent\\ b=opposite\\ \end{cases} \\\\\\ \pm\sqrt{8^2-1^1}=b\implies \pm\sqrt{63}=b ~\hfill tan(\theta )=\cfrac{\stackrel{opposite}{\pm\sqrt{63}}}{\stackrel{adjacent}{1}} \\\\\\ ~\hspace{34em}$

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2 years ago

Pls Help ASAP if you. Can

n200080 [17]

I think it’s b because it would make the most sense I believe but I’m really sorry if I’m wrong

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3 years ago