11^2 = 121
sq root 143 rounded to nearest unit is 12
so (3×121)/12 is approx to (3×120)/12 = 30
QUESTION:
What is c speed of light in albert einstein equation? [E = mc²]
ANSWER:
In the equation, the increased relativistic mass (m) of a body times the speed of light squared (c²) is equal to the kinetic energy (E) of that body.
Where are the following set of words
Answer:

Step-by-step explanation:
Let assume that tree grows perpendicular to surface. The statement is geometrically represented in the attachment included below, which resembles a right-angled triangle. Lastly, the angle of elevation of the sun is determined with the help of the following trigonometric relationship:





Step-by-step explanation:
To find the perimeter of something, we add all of the measurements of the sides together.
A rectangle has 4 sides, this means we must double the algebraic hints given to us.
If we add them all up together it will look like this:
x-9+x-9+3x-4+3x-4=138
If we simplify it by collecting the like terms:
8x-26=138
We add 26 onto 138
8x=164
To find out what x equals, we divide by 8:
164÷8= 20.5
Answer:
x=20.5cm
x-9 is 11.5
3x-4 is 57.5
I know that you will not give 100 points but just wanted to help.