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anonymous
 4 years ago
A rectangular lawn measures 7m by 5m. A uniform border of flowers is to be planted along two adjacent sides of the lawn, as shown in the diagram. If the flowers that have been purchased will cover an area of 6.25 m^2, how wide is the border?
anonymous
 4 years ago
A rectangular lawn measures 7m by 5m. A uniform border of flowers is to be planted along two adjacent sides of the lawn, as shown in the diagram. If the flowers that have been purchased will cover an area of 6.25 m^2, how wide is the border?

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anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0dw:1328469576570:dw

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0Width of the strip be x metres. Solve an equation to find x. Dimensions of the new lawn are (7+x) by (5+x) Area of the new lawn is 6.25m^2 (7+x)(5+x) = 6.25 35 + 12x + x^2 = 6.25 x^2 + 12x+28.75 = 0 a = 1, b=12, c=28.75

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0I used the quadratic formula after and got x= 12+/√29/2 but it's wrooong

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0The answer is supposed to be: 0.5 m

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0dw:1328481863682:dw

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.07x+5x+x^2=6.25 try this one..

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0Why is it 7x + 5x + x^2?

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0dw:1328482080435:dw

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0But why isn't it not x^2 + 12x + 35?

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0or for the same result (7+x)(5+x)35=6.25

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0dw:1328482316536:dw