Yes the value of X is 12.53 :)
Pythagorean theorem.
11•11=121+6•6=36=157
The square root of 157=12.53
Answer:
Option D) x = −4.41, −1.59
Step-by-step explanation:
We are given the following expression in the question:

Solving the above expression, we get:

Answer:
The dimensions of the rectangle:
length: 12cm
width: 15 cm
Step-by-step explanation:
The perimeter of a rectangle is:
perimeter = 2(length+width)
54 = 2(a+b)
a = b - 3
a = legth
b = width
then:
54 = 2((b-3)+b)
54/2 = b-3 + b
27 = 2b - 3
27 + 3 = 2b
30 = 2b
b = 30/2
b = 15
a = b-3
a = 15 - 3
a = 12
Check:
54 = 2(15+12)
54 = 2*27