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Naddika [18.5K]
3 years ago
12

6. The area of a rectangular sheet of paper is 300 cm squared. The length is 5 cm more than the width

Mathematics
2 answers:
konstantin123 [22]3 years ago
8 0

Answer:

Step-by-step explanation:

width = x

length= x + 5

a)  x + 5

b) x * (x+5) = 300

x^2 + 5x = 300

x^2 + 5x - 300 = 0

Δ = 25 + 1200 = 1225

width = (-5 + 35)/2 = 15 cm

lenght = 15 + 5 = 20 cm

murzikaleks [220]3 years ago
7 0

Answer:

a) length = x + 5  

b) x^{2} + 5x - 300 = 0

Step-by-step explanation:

x = width

x + 5 = length

(x)(x + 5) = 300

x^{2} + 5x = 300

x^{2} + 5x - 300 = 0

(x+20)(x-15)

x = -20 or x = 15  ( disregard the -20. measurements can't be negative)

width = 15

length = x+ 5 =  15+5 = 20

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