What property is being illustrated in the statement: (12 +23) +37= (37 +23) + 12 ? A. closure

B. commutative

C. associative

D. distributive

The symbol written on top of the number to show that it is the repetend?
a. slash

b. hyphen

c. dash

d. vinculum

Find the sum of (+8) + (-12) + (+3) +(-4).
a. +27

b. -27

c. +5

d.-5

The sun’s mass is 2.0×10^ 30 kg, its radius is 7.0×10 5 km, and it has a rotational period of approximately 28 days. if the sun should collapse into a white dwarf of radius 3.5×10 3 km, what would its period be if no mass were ejected and a sphere of uniform density can model the sun both before and after?

Heterogeneous mixture with larger particles that never settle is

Cells in the nervous system have a potential difference of 70 mv across the cell membrane separating the interior of the cell from the extracellular fluid. this potential difference is maintained by ion pumps that move charged ions across the membrane. is this an emf? select the correct answer and explanation. 1)no. the ion pumps cannot separate charges; thus, they cannot create a potential difference. 2)yes. the ion pumps cannot separate charges, but they still can create a potential difference. 3)yes. the ion pumps can actively separate charge; thus, they can create a potential difference. 4)no. the ion pumps can separate charges, but they cannot create a potential difference.