Answer:
if the stone makes 150 revolution per minute, the tension force of the string on the stone is
Find the area of the triangles and smal ler square and add them together ; and find the area of the complete square and set them equal to each other (these are known truths)
triangle: l×w /2
square: s^2
There are 4 triangles so
4 (1/2ab)+c^2= (a+b)(a+b)
simplify
2ab+c^2= a^2+2ab+b^2
-2ab both sides
c^2=a^2+b^2
tada!! it's proven :)
Answer:
b
Step-by-step explanation:
Answer:
The greater than symbols looks like this > , and the less than symbol looks like? <
Answer:
x = -21/5 = -4.200
Step-by-step explanation: