A square has a perimeter of 48 inches. If a side length is 3x, write an equation to solve for x

In a square, all sides are equal. This means that each side is 3x inches in length.

The sum of the sides is 48 inches

There are 4 sides in a square.

3x + 3x + 3x + 3x = 48

12x = 48 > is the equation

This means that x = 4

Each side is 3x inches in length, hence each side is also 3(4) which is 12 inches or 1 feet.

Step-by-step explanation:

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explanation

the graph has a slope of 1/3 because each time you move up 1, you go to the right 3. so, slope = rise/run = 1/3. we can cross choice a off the list since we want a slope of 3, rather than 1/3.

the first table shown has a slope of -3. this is because the rise is -6 and the run is 2, so slope = rise/run = -6/2 = -3. note how x increases by 2 each time (run) and y drops by 6 each time (rise). choice b can be eliminated.

the second table has a slope of 3. each time x goes up by 1, the y values increase by 3. slope = rise/run = 3/1 = 3. alternatively you can use the slope formula to prove that the slope is 3 here. use any two rows of values to generate the two points. choice c is one of the answers

the third table also has a slope of 3. let's use the slope formula to prove as such. i'm going to use the first two rows of the table. so i'll use the two points (2,1) and (5,10)

m = slope

m = (y2-y1)/(x2-x1)

m = (10-1)/(5-2)

m = 9/3

m = 3 so we get a slope of 3

choice d is the other answer

answer: 4

step-by-step explanation: