6) What is the
solution
to a
system
with
equations
8x+2y=20
and
-4x+y=2 ?

I’m stuck on this i don’t understand.

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¯¯¯¯¯¯¯¯)?

The area of the map is the product of the length and width. write and expression for the area as the product of the two binomials do not multiply