Step-by-step explanation:
Equation for circle centered at origin:
x² + y² = r².
Therefore r² = (-4)² + (-2)² = 20, r = √20.
Hence d = 2r = 2√20 = 8.94 (2d.p.)
Answer:
a=14
Step-by-step explanation:
-a+28=14
So -a=-14
so a=14
Answer:
x = 7
Step-by-step explanation:
123 = 17x + 4
123 - 4 = 17x
119 = 17x
119 / 17 = x
7 = x
Answer:
F
Step-by-step explanation:
if you do the math you end up with 49 which is a perfect square of 7
Answer:
To know if the equation is true, you need to write it down on a piece of paper and see if you get the results.
Step-by-step explanation:
