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2 years ago

PLZ HELP y= 2x*5 when x=2

Mathematics

2 answers:

topjm [15]2 years ago

6 0

Answer:

y = 20

Step-by-step explanation:

y = 2(2)*5

y = 4 * 5

y = 20

Kay [80]2 years ago

4 0

Answer:

Step-by-step explanation:

In this question the value for the variable 'x' as 2

2x * 5

2 * 2 * 5

This is your answer :)

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3 years ago

1) For the data in the table, does y vary directly with x? If it does, write an equation for the direct variation.

Gelneren [198K]

Answer:

Yes, "y" varies directly with "x".

The equation is: $y=1.375x$

Step-by-step explanation:

By definition, Direct variation equations have the following form:

$y=kx$

Where "k" is the Constant of variation.

If you solve for "k", the equation is:

$k=\frac{y}{x}$

Then, given the table provided in the exercise, you can know if "y" varies directly with "x" by finding the quotient of the correspoding values of "x" and "y":

- Dividing $y=11$ by $x=8$ you get:

$\frac{11}{8}=1.375$

- Divide $y=22$ by $x=16$ :

$\frac{22}{16}=1.375$

- Dividing $y=33$ by $x=24$ :

$\frac{33}{24}=1.375$

Since the quotient is constant, then "y" varies directly with "x" and the the Constant of variation is:

$k=1.375$

Therefore, the equation for the Direct variation is:

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