Digital ACT Math Practice Question #1318
Test your problem-solving accuracy on this official-caliber item. Select an answer choice to check your reasoning instantly.
Recognize standard Pythagorean triples: $8-15-17$. The modulus is instantly $17$.
The modulus of a complex number $z = a + bi$ is defined as $|z| = \sqrt{a^2 + b^2}$. $$|z| = \sqrt{8^2 + (-15)^2} = \sqrt{64 + 225} = \sqrt{289} = 17.$$...
Distractor Analysis: Trap choice eliminates careless test-takers who confuse roots with coordinates...
Unlock Full Solution & 2,600+ Official Drills
Access detailed Socratic steps, trap breakdowns, authentic timed module simulations, and Desmos speed hacks for just $9.99/mo.
If $\sin \theta = \frac{5}{13}$ and $\frac{\pi}{2} < \theta < \pi$, what is the value of $\cos \theta$?...
Which of the following complex numbers is equivalent to the expression (3 + 4i) / (1 - 2i)?...
A research committee of 4 scientists is to be formed from a department containing 6 chemists and 5 physicists. If the co...
What is the resulting matrix product of [[2, 5], [-1, 3]] * [[4], [1]]?...