How many Diagonals does a trapezoid?

Is 20 equals 15y in algebraic equation.how? What does jtc 969 mean? How is squaring a number different from the square root of a number? 104 as a product of prime factors? What is 213 thousands in decimal? What is the percent of 4 out of 16? Can a pentagon have four right angles? What is the percentage of 6.8 cgpa? How many groups of 100 are there in 600? Hexidecimal numbers are often proceded by what so the value containing only numerals is not mistaken for a decimal number? What is the meaning of fourth of an inch? Are there any math words that stat with Z? What structure does surface area represent in a cell? How do you simplify the square root of 100? What is the Roman Numeral of 3725? What is sixty percent of ten thousand? What is 35 over 46 in simplest form? What is the best fractional representation of pi? How do you forecast percentages for example I have a target of 1.5million but i want to know what a 10 20 30 40 and 50 etc would be? Cara-fate and antacids not to be given within 30 minutes of each other?