Can some one please answer this for me?

I will put their answer on brainleast

With these: 18/36 = 1/? missing number change 1 5/8 to improper fraction. change 19/5 to a mixed number.

Afarm that has 4 x 10^2 acres has 1.2 x 10^5 cattle. what is the average number of cattle per acre? write the answer in scientific notation. answere asap

Ineed with angles and the measure of them i have abc a is 65 and b is (3x-10) and c is (2x) find the value of x