(03.01 mc) 11 points
which of the following statements does not describe the structure of an atom?
a. an atom has a small, dense center called the nucleus.
b. inside the nucleus of an atom are protons and electrons.
c. protons are positively charged sub-atomic particles.
d. electrons are negatively charged sub-atomic particles.

answer:   b

step-by-step explanation:

x2 = 16

x can not be a negative number because 16 is positive

the only answer would be positive 8  

option (b) is correct

step-by-step explanation:

to find the solution of this system, we need to convert it into reduced row-echelon form. we have,

after applying row operations r2 -> r2/2 and r3 -> r3/3, we get,

nope lol

step-by-step explanation:

2 pecks

step-by-step explanation: