3 years ago

The side of a square is (4x - 2y). What is the perimeter of the square?

Mathematics

2 answers:

ycow [4]3 years ago

7 0

I think its 16x-8y but im not sure. i would wait for another reply. <span />

Elza [17]3 years ago

3 0

4x*4=16x
-2y*4=-8y
Combine

16x-8y

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loris [4]

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3 years ago

32 is 40% of what number? Enter your answer in the box.

Whitepunk [10]

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Julian saved between $ 30 and $ 52 over the summer. His friend Daniela saved twice as much. Let n represent the amount of money

maks197457 [2]

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Sophie [7]

That number is divisible by 6.

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3 years ago

If a girl in a bikini has walked 4 KM in 10 minutes, How many kilometers does she walk in 3 years?

Mashutka [201]

Answer:

631139.04 kilometers in 3 years

Step-by-step explanation:

Let x = how many kilometers she walk

y = time (minutes)

Since she walks 4km in 10 minutes.

x = 4, y = 10

(4,10)

But how many minutes if she walk only a kilometer? Divide x and y by 4.

(1,2.5)

She walks a kilometer under 2.5 minutes.

Now finding rate of changes.

$\displaystyle \large{m = \frac{10 - 2.5}{4 - 1} } \\ \displaystyle \large{m = \frac{7.5}{3} } \\ \displaystyle \large{m = 2.5}$

Since m = 2.5

and of course, the function should be proportional so the equation should be y = mx.

$\displaystyle \large{y = 2.5x }$

Since time should be minutes instead of years.

Since 3 years = 1577847.6 minutes

$\displaystyle \large{1577847.6 = 2.5x}$

Divide both sides by 2.5

$\displaystyle \large{ \frac{1577847.6}{2.5} = x} \\ \displaystyle \large{631139.04 = x }$

5 0

2 years ago