Final answer:
To solve the formula t = 1/8ac for a, multiply both sides of the equation by 8c and then take the reciprocal to find a = t/(8c). Option (D) is correct.
Step-by-step explanation:
Simplify each side of the equation by removing parentheses and combining like terms. Use addition or subtraction to isolate the variable term on one side of the equation. Use multiplication or division to solve for the variable.
To solve a linear equation in two variables, any of the above-mentioned methods can be used i.e. graphical method, elimination method, substitution method, cross multiplication method, matrix method, determinants method.
A simple equation is an expression containing at least one variable (=unknown value) and an "equals sign" ( = ) with a mathematical expression on each side of it. The equals sign says that both sides have exactly the same value. An equation can be as simple as x=0, or as hard as 4(3y99)+76,42÷3x or harder.
To solve the formula t = 1/8ac for a, we can begin by isolating 'a' on one side of the equation. To do this, we need to multiply both sides of the equation by 8c. This gives us 8ct = 1/a. To solve for 'a', we can take the reciprocal of both sides of the equation. This gives us a = 1/(8ct), which can be simplified to a = t/(8c).