The length of a rectangle is 2 more than 3 times the width. If the perimeter is 100 meters, what is the width of the rectangle?
8==============>V
first time on here
We are given L and W are the dimensions of the rectangle where L stands for length of the rectangle and W stands for width of the rectangle. We are also given by the first sentence that L is 2+3W or L=2+3W We are also given the the sum of the sides equals 100 meters->can you write this as a mathematical equation?
i am not that good at algebra
i can't make that many equations
sum means add can you write an equation expressing the sum of the sides=100 meters
there are 4 sides in a rectangle
opposite sides are equal
|dw:1434468984467:dw|
can you write the mathematical equation now?
for the sum of the sides is 100 meter?
L=2+3w/100?
do you know what sum of the sides of the rectangle means?
Do you see the side measurements in the rectangle above that I drew?
yes
L+W+L+W <---this is suppose to be 100 L+W+L+W is the perimeter of the rectangle (this is just the sum of all the sides) L+W+L+W=100 combine like terms on the left hand side.
then sub in the other equation I gave you
oh ok. ... ... 2L+2w=100 L=2+3w
yes sub the equation equation you have written there into the first
... ... 3L+6w=100?
no
4L+6w=100
in the second equation do you see that L is (2+3w) replace the first L you wrote with (2+3w)
|dw:1434469623999:dw|
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