<h3>
Answer: Choice D</h3>
Subtraction property of equality
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Reason:
We subtract 18 from both sides to go from 4x+18 = 78 to 4x = 60
So we use the aptly named subtraction property of equality.
In general that rule is if a = b, then a-c = b-c
In order for the rectangle to have an area of 6 cm^2, Tomas could have drawn it with one of two side length possibilities. He could either have drawn a rectangle with a length of 6 and a width of 1, or a rectangle with a length of 3 and a width of 2.
To find perimeter, you just add up all side lengths together, so let's compare the two options to find out which one has a greater perimeter.
Let's try the first option first.
That would be 6 + 6 + 1 + 1, which is 14.
Let's try the other one.
3 + 3 + 2 + 2 = 10
The first option (width 1, length 6) would yield the greatest perimeter.
Hope that helped! =)
<u>G</u><u>i</u><u>v</u><u>e</u><u>n</u><u> </u><u>:</u><u> </u>
- <u>length</u><u> </u>= 12km
- <u>brea</u><u>d</u><u>t</u><u>h</u><u> </u>= 2km
<u>To</u><u> </u><u>find</u><u> </u><u>:</u><u> </u>
<u>F</u><u>o</u><u>r</u><u>m</u><u>u</u><u>l</u><u>a</u><u> </u>:
- Area of rectangle = length × breadth .
<u>procedure</u><u> </u><u>:</u>
putting value of the given data into formula :
Area of rectangle = 12km ×2 km
= 24km ^2
Ans = 24km^2
