How To Questions & Answers | Page 12

Statements B and C are true.

Mass is measured in kilograms (kg), grams (g), and pounds (lb), while weight is measured in Newtons (N) and pound-force (lbf) with $W = mg$.

When $n = 3$, the value of the expression $-2n (5 + n - 8 - 3n)$ is $\boxed{54}$.

The equivalent expression for $(10x)^{-3}$ is $\frac{1}{1000x^3}$.

The solution to the equation $-3x + 1 + 10x = x + 4$ is $x = \frac{1}{2}$.

To solve $\log_4(x + 20) = 3$, convert it to its exponential form $x + 20 = 4^3$ and solve for $x$, yielding $\boldsymbol{x = 44}$.

The value of $n$ that makes the equation $(2x^9y^n)(4x^2 y^{10}) = 8x^{11}y^{20}$ true is 10.

Chondroitin sulfate is abundant in the matrix of connective tissues, particularly in cartilage, where it contributes to structural integrity and elasticity.