50?
I'm assuming 50 because the angles to a triangle always adds up to 180 and this one has 130 and 130+50=180
Answer:
A blood bank needs 6 people to help with a blood drive. 11 people have volunteered. Find how many different groups of 6 can be formed from the 11 volunteers.
Step-by-step explanation:
A blood bank needs 6 people to help with a blood drive. 11 people have volunteered. Find how many different groups of 6 can be formed from the 11 volunteers.
Answer: 
Step-by-step explanation:
use the equation 
we know the slope, y, and x, so plug in


so x^2 + 3x + 2 = 2x+3
or x^2 + x = 1
After that just use the a quadratic equation formula