Rose's age is 3 times the difference of her brother's age and 6. Rose is 15 years old. How old is her brother?

11

Step-by-step explanation:

Rose age = 3(x-6) = 15

Rose's brothers age = x

3(x-6) = 15

3x - 18 = 15

3x = 15+18

x = 33/3 =11

Rose's brothers age = x =11

I hope im rght!!i

11 years old

Step-by-step explanation:

Create an equation where x is her brother's age

15 = 3(x - 6)

Solve for x:

15 = 3x - 18

33 = 3x

11 = x

So, her brother is 11 years old

(w – 2.5)(w + 2.5)

(–4v – 9)(–4v + 9)

step-by-step explanation:

to find the perimeter of the rectangle this is the expression:

x-9+x-9+3x-4+3x-4=138

if we simplify it:

8x-26=138

remember, 138 is what it all adds up to

the length is 11.5cm

the width is 57.5cm

the area is 661.25cm^2

the answers might not be correct use at own risk