Since <span><span>−64</span><span>-64</span></span> does not contain the variable to solve for, move it to the right side of the equation by adding <span>6464</span> to both sides.<span><span><span>x2</span>=64</span><span><span>x2</span>=64</span></span>Take the square root of both sides of the equation to eliminate the exponent on the left side.<span><span>x=<span>±<span>√64</span></span></span><span>x=<span>±64</span></span></span>The complete solution is the result of both the positive and negative portions of the solution.
<span>x=8,<span>−<span>8</span></span></span>
Answer:
15km
Step-by-step explanation:
Use the Pythagorean Theorem
a²+b²=c²
9²+12²=c²
81+144=c²
225=c²
Square root both sides
c= 15km
Answer:
multiplying
Step-by-step explanation:
Answer:
4
Step-by-step explanation: