I don’t get this I found an answer that the area of David’s canvas is greater than the area of Chizu’s canvas why??? I thought the perimeter was adding a sides like 3/9/3/9 = 24
And
6/6/6/6-‘= 24
So isnt equal ??what I’m doing wrong

54

step-by-step explanation:

6x9

x = ±sqrt(10)

step-by-step explanation:

5 - 2x² = -15

subtract 5 from each side

5-5 - 2x² = -15-5

-2x^2   = -20

divide by -2 on each side

-2x^2   /-2= -20/-2

x^2 =10

take the square root on each side

sqrt(x^2 )=±sqrt(10)

x = ±sqrt(10)

check:

5 - 2x² = -15

+sqrt(10)

5 - 2(sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15

-sqrt(10)

5 - 2(-sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15

the answer is two. hope this !