How do you write 49 in ordinals?

Solve for n 4n plus 3 equals 19? What is a trapezoid with even legs? Can a person have a temperature of 109? What logarithmic equation is equivalent to ea equals 35? When did Pythagoras make his school? How do you write 20 thousand in numeric? Is a straight path of points that continues without end in both direction? What is the surface area of a triangle of 115mm flat 3sides with a inner trinagle of 60mm flat 3sides taken out in cm? Multiply 45.3 by ten? Is 215 divisible by 4? How much cm is in 3 km? What is 264 - 88? What is the historical significance of the golden ratio? What minus 150 equals 322? What is the square root of 188? What are positive and negative numbers called? What is 304 turned upside down on a caculator? How do you write sixty in roman numeral? How much does 3 feet by 3 feet of cotton weigh? The term ratiocination mean?