Answer:
x = - 
Step-by-step explanation:
the equation of a circle centred at the origin is
x² + y² = r² ( r is the radius )
The radius of a unit circle is r = 1
substitute (x, - 
) into the equation and solve for x
x² + (- )² = 1²
x² + 
= 1 ( subtract from both sides )
x² = 1 - = 
( take square root of both sides )
x = ± 
= ±
since the point is in the 3rd quadrant then x < 0
x = -
Answer: 56
Step-by-step explanation:
Just trust me I had this question on a quiz
Answer:
22 and 46
Step-by-step explanation:
let
one number is x
another is 2x+2
now 2x+2+x=68
or, 3x+2=68
3x=66
or x=66/3=22
so one number is 22 and another is (22X2+2)=46
It is one hundred times greater, 7000= 70 x 100
