3 years ago

What is the slope of the line that passes through (2, -3) and (9. -7)? Fractions must be in simplest form.

Mathematics

1 answer:

Gennadij [26K]3 years ago

3 0

Answer:

-4/7

Step-by-step explanation:

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balandron [24]

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Step-by-step explanation:

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3 years ago

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wel

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3 years ago

Express 36% as a fraction In lowest terms

Darya [45]

Answer:

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Step-by-step explanation:

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3 years ago

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Suppose z varies directly with x and inversely with the square of y. If z = 18 when I = 6 and y = 2, what is z when I 7 and y =

madam [21]

It is given that z varies directly with x and inversely with the square of y so it follows:

$z=k\frac{x}{y^2}$

It is also given that z=18 when x=6 and y=2 so it follows:

$\begin{gathered} 18=k\frac{6}{2^2} \\ k=\frac{18\times4}{6} \\ k=12 \end{gathered}$

So the equation of variation becomes:

$z=12\frac{x}{y^2}$

Therefore the value of z when x=7 and y=7 is given by:

$\begin{gathered} z=\frac{12\times7}{7^2} \\ z=\frac{12}{7} \\ z\approx1.7143 \end{gathered}$

Hence the value of z is 12/7 or 1.7143.

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1 year ago