4x=(-3x)+18
7x=18
x≈2.5
4(2.5)=3y-2
10=3y-2
12=3y
y=4
your answer is B.(2.5,4)
Answer:
mk
Step-by-step explanation:
Refer to the attached image.
Let the width of the border be 'x' inch.
Area of border = Area of rectangle ABCD - Area of rectangle PQRS
Area of rectangle ABCD = 
= 
=
square units.
Area of rectangle PQRS = 
= 
= 117 square units.
So, area of border =
As it is given that the area of border is 48 square units.
So, 


So, the complete equation is
.
Now, we will find 'x' in the equation
,


(x-1) (x+12)=0
So, x = 1 or x = -12
Width can'not be negative.
So, x = 1 .
Therefore, the width of the border can'not be 2.5 inch.
Therefore, the width of the border is 1 inch.
1/3^5
When multiplying exponents you just add them. X^a x X^b = X^a+b
If you have a negative exponent, you flip it to be the denominator (if originally numerator) or numerator (if originally denominator.
So, 3^-5 = 1/3^5