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4 years ago

PLEASE SEE PHOTO!!!!!!!!!!

Mathematics

1 answer:

Alla [95]4 years ago

5 0

Answer:

i think it is 31 maybe

Step-by-step explanation:

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Kitty [74]

Answer: x=-7 and x=9

Asummung you are solving for x

x+7=0

x=-7

-x+9=0

-x=-9

x=9

3 0

4 years ago

Read 2 more answers

Can someone please explain this to me?

Tom [10]

They are asking what direction is it from point A to point B. hope that helps

8 0

3 years ago

Whats the root and vertex for y= 2x squared -5x-604

jeyben [28]

Vertex is calculated by -b/2a

So we have -(-5)/2(2)=5/4

The root is determined through the quadratic formula:

x=(-b+sqrt(b^2-4ac))/2a

x=(-(-5)+sqrt(-5^2-4(2)(-604)))/2(2)

x=(5+sqrt(25-4832))/4

x=(5+sqrt(-4807))/4

So the root is some imaginary number

Hope this helped!

6 0

3 years ago

Differentiate y=xe^(-x/2).

Liono4ka [1.6K]

We will use the product rule:
d/dx( f(x) · g(x) ) = f´( x ) g( x ) + g´( x ) f( x ) ( and after that the chain rule )
y´ = ( x ) ´· e^(-x/2) + ( e^(-x/2)´ · x) =
= $e^{- \frac{x}{2} } + x * e^{- \frac{x}{2} } *(- \frac{1}{2})= \\ e^{- \frac{x}{2} } - \frac{x}{2} * e^{- \frac{x}{2} } = e ^{- \frac{x}{2} } (1- \frac{x}{2} )$

4 0

3 years ago

3y(7 + 2x) + 9ty - 10

kakasveta [241]

What exactly do you need to find? Does it need simplified?

8 0

3 years ago