Find the value of x that makes the equation true: 16 - x = 4

x = 18
x = 20
x = 14
x = 12

Which math sentence can be used to determine if the triangle is a right triangle?

Ineed with math stuff it involves graphs

The relative growth rate for a certain type of fungi is 60% per hour.a small culture has formed and in just 6 hours the count shows to be 20,273 fungi in the culture.what is the initial number of fungi in the culture?