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3 years ago

I need help with solving 10x-8x+2+10

1 answer:

6 0

Hey!

First, let's write the problem.
$10x-8x+2+10$
Subtract like terms. $10x-8x=2x$
$=2x+2+10$
Add numbers.
$=2x+12$
That's our final answer.

Thanks!
-TetraFish

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3 years ago

Find all derivatives of y^n of the function y=√x+5

quester [9]

Hello,

As somebody has distroyed my question, (may be he have not understood ?)

i will reply to y=(√x)+5

$\displaystyle \boxed{\dfrac{d^n y}{dx^n} =(-1)^n*n!! *\dfrac{1}{2^n} *x^{-\frac{2n+1}{2} }\\}\\y'=\dfrac{1}{2} *x^{-\frac{1}{2}} \\\\y''=-\dfrac{1}{4} *x^{-\frac{3}{2}} \\...\\$

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3 years ago

I need help with #2

andrew-mc [135]

Answer:

28 < x < 114

Step-by-step explanation:

x cannot be larger than or even equal to 71 + 43 = 114. So it must be less than 114.
But there are limits on the other end as well. 43 +x > 71, otherwise you won't have a triangle. so you have to solve that inequality as well
43 + x > 71 Subtract 43 from both sides.
43-43 + x > 71 - 43
x > 28
To put this in the form of the answer you need it looks like this.
28 < x < 114

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4 years ago