3 years ago

Are these answers correct, if not help me with them please?

1 answer:

6 0

I am not sure about all of them, but it says to write the answers in simplest form, but number 4 is not in simplest form.
4/12 can be simplified to 1/3

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HELP ME PLEASE ANYONE FOR 20 POINTS

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Step-by-step explanation:

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3 years ago

Y is inversely proportional to the square root of x if y=3 when x=25 find y when x is 9

irga5000 [103]

Answer:

$y=5$

Step-by-step explanation:

$\textsf{If }y \textsf{ is \underline{inversely proportional} to the square root of }x, \textsf{ then}:$

$y \propto\dfrac{1}{\sqrt{x}} \implies y=\dfrac{k}{\sqrt{x}}\quad \textsf{(where k is some constant)}$

$\textsf{When }x=25, y = 3:$

$\implies 3=\dfrac{k}{\sqrt{25}}$

$\implies 3=\dfrac{k}{5}$

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Inputting the <u>found value of k</u> into the equation:

$\implies y=\dfrac{15}{\sqrt{x}}$

To find the value of y when x is 9, <u>substitute</u> x = 9 into the found equation:

$\implies y=\dfrac{15}{\sqrt{9}}$

$\implies y=\dfrac{15}{3}$

$\implies y=5$

8 0

2 years ago

What is the slope of a line that passes through the points (-2, 4) and (-6, 12)?

SOVA2 [1]

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3 years ago

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