Answer:
Step-by-step explanation:
let : x The length and y the width you have this system :
xy =60....(1)
x = y+10...(2)
put the value for x in (1): (y+10)y =60
the quadratic equation is : y² +10y - 60 = 0
Δ =b² - 4ac a = 1 b= 10 c= - 60
Δ =10² - 4(1)(-60) = 324 =18²
y 1 = (-10-18)/2 negatif...... refused
y 2 = (-10+18)/2 =4
the width is 4
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Answer:
6 and 8
Step-by-step explanation:
6+8=14 difference 2
16--(3) $17
17--(3) $64
18--(2) $18
Answer:
Around 91.38
Step-by-step explanation:
26.5 x 100/29 = 91.38
