Answer:
Width is 20cm
Step-by-step explanation:
Step one:
Given data
let the width be x
W= x
L= x+5
P= 90
Step two:
The expression for the perimeter is
P= 2L+2W
90= 2*x+2(x+5)
90= 2x+2x+10
collect like terms
90-10=4x
80= 4x
divide both sides by 4
x= 80/4
x= 20
The value for c is 36 which completes the square for the quadratic x² + 12x + c.
<h3>What is a quadratic equation?</h3>
The polynomial having a degree of 2 is termed as the quadratic equation.It means that the equation will have the maximum power of 2.
Here we have the equation
=x²+12x+c
=x^2+12x+36
=x^2+6x+6x+36
=x(x+6)+6(x+6)
=(x+6)(x+6
=(x+6)²
hence value for c is 36 which completes the square for the quadratic x² + 12x + c.
To know more about quadratic equation follow
brainly.com/question/1214333
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Answer:
I cant see the question
Step-by-step explanation:
X – 5 ≥ 9
x – 9 > 5
x – 5 > 9
x – 5 ≤ 9
10% of £1.8
10/100 * 1.8
= 18/100
= 0.18
= £0.18