3 years ago

2x+3y=20 -2x+y=4 Solve algebraic

1 answer:

7 0

The first one is 2x + 3y = 5xy

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qaws [65]

Two miles every 5 minutes.

Sorry i answered so late.

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4 years ago

tia_tia [17]

Do you want to solve for x and y?
What is the objective?

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3 years ago

diamong [38]

The new area will be 320 in²

Explanation

Lin has a drawing with an area of 20 in² and she increases all sides by a scale factor of 4.

The general rule we need to use here.......

"If the lengths of the sides in a shape are all increased by a scale factor of $k$ , then the area will be increased by a scale factor of $k^2$ "

Here the sides are increased by a scale factor of 4. So, the area will be increased by a scale factor of $(4)^2 =16$

Thus, the new area will be: $(20*16)in^2 = 320in^2$

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3 years ago

borishaifa [10]

0.325 is the answer. :)

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3 years ago

marishachu [46]

Answer:

reciprocal means inverse:

$= \frac{1}{0.156} = \frac{1000}{156} \\ \\ = { \boxed{ \boxed{ \frac{250}{39} }}}$

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3 years ago