The answer is I don’t really know how to explain it but trust me it’s B: 8.1
Use the Pythagorean Theorem to solve for the third side. The third side must be the hypotenuse since the height (vertical leg) is 9, and the length (horizontal leg) is 5.
a² + b² = c², where a and b are the legs and c is the hypotenuse. Plug in 5 and 9 for a and b; solve for c.
5² + 9² = c² ⇒ 25 + 81 = c²
106 = c²
Square root both sides.
c = 10.3
Third side: 10.3
Answer:
Step-by-step explanation: look at the picture
Log3(7) + log3(x)
Terms that are multiplied inside one log become added when you separate them where each term gets its own log.