Learn Why are these triangles similar?
M
A
30°
30°
C
130°
20°
B
is it sss aa or sas?

sadsadsadsad

step-by-step explanation:

b. 153 students do not participate in sports and seventy-five 12th graders were surveyed

or

step-by-step explanation:

we need to solve for 'x' the following equation:  

we have that:

⇒

⇒ ⇒

factorizing, we get that:

  ⇒

then, the solutions are: or

nothing extraneous has been found!

for this case we must apply distributive property to the following expression:

the distributive property states that:

then, when applying the property we have to multiply the -2 for each term within the parenthesis: