Ineed this quick
alvin’s first step in solving the given system of equations is to multiply the first equation by 2 and the second equation by –3. which linear combination of alvin’s system of equations reveals the number of solutions to the system?
9x + 4y = 36
6x + 2.5y = 24

After multiplying by the given coefficients and adding, the new equation obtained is:
8y - 7.5y = 0

 after doing the calculations the answer is:
y = 0
x = 4

Because the two equations formed were independent, they had one solution

definition: a circle is the  set of all points in a plane that are equidistant  from a given  point  called the center of the circle. we use the symbol ⊙ to represent a circle. the a line segment from the center of the circle to  any point  on the circle is a radius of the circle.

step-by-step explanation:

i googled it and this is what i got i don't know how it is. sorry.