Answer:
D
Step-by-step explanation:
The equation of a circle centred at the origin is
x² + y² = r² ( where r is the radius ) , then
x² + y² = ( )² , that is
x² + y² = 249 → D
Answer:
x(x + 5) = 0
Step-by-step explanation:
x² = - 5x
x² + 5x = 0
<em><u>x(x + 5) = 0</u></em>
<em><u>hope it's helpful</u></em>
Answer:
C $80
Step-by-step explanation:
Since
80-40-20-10=150