Step-by-step explanation:
By the Distributive Property,
2/5 * (15x - 10)
= (2/5)(15x) + (2/5)(-10)
= 6x - 4.
I am not sure but... sixty three, 63.0, 630%, and 630/100, (I am sorry if I am wrong).
Answer:
18 is the diameter of the sphere
40
40 - 5
40 +40 +20= 100%
5+5+2.5= 12.5 %
She gave 12.5 percent