Which number system BEST describes this set?

{-10, 0, 28/7, 102.9}
A) integers
B) natural numbers
C) rational numbers
D) irrational numbers

They're all rational numbers.

Integers: A whole number

Natural numbers: positive integers

Rational numbers: Any integer, positive or negative, including fractions

Irrational numbers: number that cannot be written as a ratio of two integers

b is 38 degrees.

a is 52 degrees.

this is because if b is 38 and a is 14 degrees more than b than 38+14=52 and 52+38=90 degrees. hope this .