If y varies directly with the square of x and inversely with z. If x = 2, y = 1 and a = 10, find y when x = 4 and z = 5. A. 20
B. 30
C. 40
D. 50

Please give explanation/steps, thank youu! :)

i believe your answer is 99.7% of 7-year-old children are between 46.6 inches and 49.5 inches tall.

127

whether it's diameter, or radius, i believe if i remember correctly from school, every amount has to always add up to 180. so if you take 53, and starting adding, long story short, taking 127 and adding it to 53, gives you 180.