Which of the following ratios is not equivalent to 6: 10

Which of the following vectors are orthogonal to (2,1)? check all that apply

How many square centimeters of wrapping paper will be used to wrap the shoe box?

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?