3 years ago

Someone help Me it’s timed!!!

Mathematics

2 answers:

Studentka2010 [4]3 years ago

8 0

Answer:

Im pretty sure its 42

Step-by-step explanation:

hope this helps!

Orlov [11]3 years ago

3 0

Answer: v=42

Step-by-step explanation:

18+(6)(4)

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frozen [14]

Answer:

I would but...

Step-by-step explanation:

where the question at

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HELP....(drag and drop question)

Nonamiya [84]

The point-slope form:

$y-y_1=m(x-x_1)$

We have the point $(-8,\ 2)$ and the slope $m=\dfrac{1}{2}$ .

Substitute:

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3 years ago

Point k is between points H and J, HK=x-5, KJ=5x-12, and HJ=25. Find the value of x

Firdavs [7]

We know that if K is between H and J that HK+KJ=HJ therefore by substitution, x-5+5x-12=25

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3 years ago

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CaHeK987 [17]

D: none of the above
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4 years ago

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1 If a = p^1/3-p^-1/3<br>prove that: a^3 + 3a = p - 1/p

alexandr402 [8]

Hello, please consider the following.

We know that

$a = p^{\frac{1}{3}}-p^{-\frac{1}{3}}\\\\=p^{\frac{1}{3}}-\dfrac{1}{p^{\frac{1}{3}}}$

And we can write that.

$(p-\dfrac{1}{p})^3=(p-\dfrac{1}{p})(p^2-2+\dfrac{1}{p^2})\\\\=p^3-2p+\dfrac{1}{p}-p+\dfrac{2}{p}-\dfrac{1}{p^3}\\\\=p^3-\dfrac{1}{p^3}-3(p-\dfrac{1}{p})$

It means that, by replacing p by $p^{1/3}$

$(p^{1/3}-\dfrac{1}{p^{1/3}})^3=p-\dfrac{1}{p}-3(p^{1/3}-\dfrac{1}{p^{1/3}})\\\\\\\text{ So }\\\\a^3=p-\dfrac{1}{p}-3a\\\\\boxed{ a^3+3a=p-\dfrac{1}{p} }$

Hope this helps.

Do not hesitate if you need further explanation.

Thank you

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3 years ago