How many times greater is the digit 5 in the number 27,458 than the digit in the number 34,572?

Write numerical coefficient of y² in the expression 2x² - 15xy – 7y²

Arley is building a model of a city map. in one part of the city, three roads form a right triangle, which harley draws as triangle abc, with the following measures: m∠b=90° and m∠a=30°. in his scale model, the hypotenuse of triangle abc, ac¯¯¯¯¯¯¯¯, has a length of 817−−√ cm. what is the value of a (the length of bc¯¯¯¯¯¯¯¯)?

What are the first 4 terms in the multiplication pattern given by the formula 2×4n