Put the following in order from least to greatest

put these three in order

What is the product? (x2+3y+7) [yy+1)

If lmn=xyz, which congruences are true by cpctc? check all that apply

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¯¯¯¯¯¯¯¯)?