Which of the following would be the si unit describing the mass of an object?
a: kg
b: m
c: m
d: mol

out of all of these a would make the most sense

kg (kilogram) is a measure of mass

mol (Maybe mole) is a measure of chemistry

also b and c make no sense, but if its meant to represent meters they are also wrong

a kilogram(kg)

Step-by-step explanation:

assuming you mean addition: addition and subtraction are reverse operations.

step-by-step explanation:

answer

d. 10

explanation

the distance from point y to wx is the height of the triangle.

using pythagoras theorem,

group similar terms to get,

this implies that,

take positive square root of both sides to get,

this implies that,