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Dahasolnce [82]

2 years ago

14

Suppose that y varies directly with x and y=10 when x=-20. What is y when x =15?

1 answer:

USPshnik [31]2 years ago

8 0

Answer:

15/2

Step-by-step explanation:

You want to first find the connection between the first statement, y=10 and x=20. The connection is that Y is X divided by 2. Then you want to just do the same equation to the y and keep it a fraction. (Hint. a fraction is the same as what you do to divide, its just the equation before you find your answer.) so your answer is 15/2.

Hope its right, and i hope this helped.

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serg [7]

<span>[3 - (4 + 32 * 8) ÷ 4]
=</span>[3 - (4 + 4) ÷ 4]
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3 years ago

Differentiate with respect to x:y= sinh^-1(x^2+1)

Aleks [24]

Answer:

The first derivative of $y = \sinh^{-1} (x^{2}+1)$ is $y' = \frac{2\cdot x}{\sqrt{x^{2}+2\cdot x +2}}$ .

Step-by-step explanation:

We proceed to find the first derivative of $y = \sinh^{-1} (x^{2}+1)$ by explicit differentiation and rule of chain:

$y = \sinh^{-1} (x^{2}+1)$

$y' = \frac{2\cdot x}{\sqrt{(x^{2}+1)^{2}+1}}$

$y' = \frac{2\cdot x}{\sqrt{x^{2}+2\cdot x +2}}$

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3 years ago

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Minchanka [31]

Answer:

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hopes this helped you.

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3 years ago

<img src="https://tex.z-dn.net/?f=2x%2B3%3D8%3Cbr%3E%0A" id="TexFormula1" title="2x+3=8&#10;" alt="2x+3=8&#10;" align="a

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$x\in \mathbb{R}$

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