Need Help!!!!!!!!!!!!!?
2017-12-10 8:39 pm
A fence is 689 m long. It is cut into three parts. Two parts are the same length, and the third part is 20 m longer than either of the other two. Find the length of each part.
回答 (11)
2017-12-10 8:46 pm
Let x m be the length of either of the two parts with the same length.
Then, length of the third part = (x + 20) m
The total length of the three parts is 689 m.
(x + 20) + 2x = 689
3x + 20 = 689
3x = 669
x = 223
x + 20 = 243
The lengths of the three parts are 223 m, 223 m and 243 m, respectively.
Then, length of the third part = (x + 20) m
The total length of the three parts is 689 m.
(x + 20) + 2x = 689
3x + 20 = 689
3x = 669
x = 223
x + 20 = 243
The lengths of the three parts are 223 m, 223 m and 243 m, respectively.
2017-12-10 8:47 pm
The let x be the length of the two equal parts. The length of the third side is given as x+20. The three lengths add up to the original length of the fence, so:
x + x + (x+20) = 689
3x + 20 = 689 .... combine like terms
3x = 669 ...... subtract 20 from both sides
x = 223 ..... divide both sides by 3
x+20 = 243
The short parts are 223 m each and the long part is 243 m.
Check: 223 + 223 + 243 = 446 + 243 = 689 .... good.
x + x + (x+20) = 689
3x + 20 = 689 .... combine like terms
3x = 669 ...... subtract 20 from both sides
x = 223 ..... divide both sides by 3
x+20 = 243
The short parts are 223 m each and the long part is 243 m.
Check: 223 + 223 + 243 = 446 + 243 = 689 .... good.
2017-12-12 7:50 am
Length of the fence = 669.
It is so divided that the length of the third part is 20 more that either of the other two.
This brings us to the equation- x + x + (x+10) is 689.
3x + 20 = 689
3x = 689 - 20 (or 669)
1x = 669/3 (or 223)
So the length of the three plots are 223, 223 and 243.
It is so divided that the length of the third part is 20 more that either of the other two.
This brings us to the equation- x + x + (x+10) is 689.
3x + 20 = 689
3x = 689 - 20 (or 669)
1x = 669/3 (or 223)
So the length of the three plots are 223, 223 and 243.
2017-12-11 6:24 am
2 parts are 223 m
and
1 part is 243 m.
and
1 part is 243 m.
2017-12-10 10:37 pm
A fence is 689 m long. It is cut into three parts.
Two parts are the same length, and the third part is 20 m longer than either of the other two.
3x + 20 = 689
3x = 669
x = 223
The length of each part:
223 m, 223 m, and 243 m.
Two parts are the same length, and the third part is 20 m longer than either of the other two.
3x + 20 = 689
3x = 669
x = 223
The length of each part:
223 m, 223 m, and 243 m.
2017-12-10 10:24 pm
Let x be the shorter length.
x + x + x + 20 = 689
3x + 20 = 689
3x = 669
x = 223m
The longer length is 223 + 20 = 243m.
x + x + x + 20 = 689
3x + 20 = 689
3x = 669
x = 223m
The longer length is 223 + 20 = 243m.
2017-12-10 10:24 pm
x + x + (x+20) = 689
3x + 20 = 689
x = 223
Two parts are 223 meters each. The third part is 243 meters.
3x + 20 = 689
x = 223
Two parts are 223 meters each. The third part is 243 meters.
2017-12-10 9:34 pm
x + x + ( x + 20 ) = 689
3x = 669
x = 223
Parts are 223 m , 223 m and 243 m
3x = 669
x = 223
Parts are 223 m , 223 m and 243 m
2017-12-10 8:47 pm
X + X + (X+20) = 689
3X = 669
X = 223
Therefore 2 sides are 223 and the other is 243
3X = 669
X = 223
Therefore 2 sides are 223 and the other is 243
2017-12-10 8:46 pm
(X) + (x) + (x + 20) = 689
3x + 20 = 689
3x = 669
X = 223
223, 223, 243
3x + 20 = 689
3x = 669
X = 223
223, 223, 243
2017-12-10 8:44 pm
Let the ratio be x:x:(x+20) where the first two parts are x m long.
total = 3x+20
3x+20 = 689
3x = 669
x = 223
The ratio is 223:223:243
total = 3x+20
3x+20 = 689
3x = 669
x = 223
The ratio is 223:223:243
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