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Sedaia [141]
3 years ago
5

What is a3 if a is -9?

Mathematics
2 answers:
german3 years ago
3 0

It is -27 because a negative number times a positive number is negative. In this case it is -9 times (3) which is -27.

viva [34]3 years ago
3 0

the answer is -27.

this is because if we reverse the question and do -9 times 3, we get -27.

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In triangle ABC, a = 3, b = 5, and c = 7. Find the approximate value of angle A.
Lady bird [3.3K]

Answer:

21.8° (22° to the nearest degree)

Step-by-step explanation:

Using cosine law:

a² = b² + c² - 2bc(cosA)

3² = 5² + 7² - 2(5)(7)cosA

cosA = 13/14

A = 21.7867893

Approximately angle: 22°

6 0
3 years ago
Pls help. i never understood this rule.
Dimas [21]
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and you'd need to make the expression a rational, where the numerator and denominator gives you 0/0 or ∞/∞, then you apply L'Hopital.

the only candidate there is 

\bf \lim\limits_{x\to \infty}\cfrac{2x^2-1}{3x+1}\implies \lim\limits_{x\to \infty}\cfrac{2(\infty)^2-1}{3(\infty)+1}\implies \cfrac{\infty}{\infty}
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\textit{so we can use L'Hopital by instead using the derivatives}
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\lim\limits_{x\to \infty}\cfrac{2x^2-1}{3x+1}\stackrel{LH}{\implies }\lim\limits_{x\to \infty}\cfrac{4x}{3}\implies \cfrac{4(\infty)}{3}\implies \infty
8 0
3 years ago
What is 15/32 simplified
trapecia [35]
Unfortunately, 15/32 is at its simplest form. There is no common factor between 32 and 15, meaning that the LCM is 15/32.

So, technically 15/32 is still the simplified version of 15/32.
3 0
3 years ago
Read 2 more answers
Hey does anyone know this
Readme [11.4K]
- Use the formula V = π <span>∙ r2 ∙ h.
- Plug into the equation. 27</span>π(cubed)=π∙3(2)∙h
-Solve. 27π(3)=9π∙h
27π/9π=3π
I believe the height is 3π.
<span>Hope this helps

</span>
8 0
3 years ago
4 x 13 on distributive property
pashok25 [27]

Answer: 52

Step-by-step explanation:

8 0
2 years ago
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