Which two physical quantities should be known to calculate the density of an object? a. mass and volume b. volume and weight c. weight and length d. mass and weight

Density is Mass ÷ Volume so...

A. Mass and Volume

Two physical quantities that should be known to calculate the density of an object are;

A. Mass and volume

Density is mass (m) divided by volume (V).

infinitely many solutions

step-by-step explanation:

we have been given the equation;

2(2x + 3) = -4 + 2(2x + 5)

we need to determine the value of x.

2(2x + 3), we expand this expression to obtain 4x + 6

similarly 2(2x + 5) will become 4x + 10

now we have;

4x + 6 = -4 + 4x + 10

4x + 6 = 4x + 10 - 4

4x + 6 = 4x + 6

the expression on the left hand side is identical to the one on the right hand side. therefore, we are looking at just a single straight line whose equation is;

y = 4x + 6

consequently, we shall have infinitely many solutions