Systems of Equations Level 1:
Question 2
Which of these systems of equations has an infinite number of solutions?
Select one:

–5c + 8d = 20
–5c + 8d = 22

–6c + 11d = 20
–5c + 8d = 22

–6c + 11d = 20
–6c + 11d = 20

–6c + 11d = 22
–5c + 8d = 22

x² + 3x + 7 = 0       [ax² + bx + c]

a = 1

b = 3

c = 7

quadratic formula:

    (+/- is this ±)

plug in the numbers into the variables

your answer is a

ome people is not even worth it to even try it in the air.

step-by-step explanation:

t= half of the arc subtended by t.

r= half of the arc subtended by r.  

t+r= half of the arc subtended by t + half of the arc subtended by r= half of 360=180

step-by-step explanation: