The density of copper is 9.86 g/cm3. Work out the mass of the solid copper cuboid in kg.
the cube is shown up above . please someone help me

The mass of copper cuboid is 1479g.

Step-by-step explanation:

First you have to find the volume od cuboid using the formula V = length×width×height :

Then you have to substitute the volume into the formula of density, ρ = mass/volume :

answer: bea's uncle is 25 years old.

step-by-step explanation:

given the equation , we can say that the variable "x" represents the age of bea's uncle. then to find his age, we need to solve for "x":

we must add 15 to both sides of the equation:

now we need to divide both sides of the equation by 3:

therefore, we can conclude that bea's uncle is 25 years old.

lol 2

step-by-step explanation: