Advanced Math practice question

Answer: 3

5t² = 45, so t² = 9 and t = 3 (time is positive).

Common wrong answers

If you answered 9

9 is t², not t.

If you answered 225

225 multiplies 45 by 5 instead of dividing.

If you answered 4.5

4.5 is 45/10, treating the formula as linear.

More Advanced Math questions

• Easy–Medium
  If f(x) = 2x² − 3, what is f(4)?
• Easy–Medium
  Which expression is equivalent to (2x³)(3x⁴)?
• Easy–Medium
  What are the solutions to x² − 16 = 0?
• Easy–Medium
  Which expression is equivalent to (x + 5)²?
• Easy–Medium
  For x ≠ 0, which expression is equivalent to (x² + 3x) / x?
• Easy–Medium
  What are the solutions to the equation 2(x − 3)² − 32 = 0 ?