You can use the discriminant rule, which is :
b^2 -4ac
“exactly one solution” means that it is equal to zero
so:
b^2 -4(4)(9)=0
b^2 -4(36)=0
b^2 -144=0
b^2=144
square root both sides
b=12 or -12
hope this helps !
Answer:
19 Lollipops per friend
Step-by-step explanation:

Answer:
the you run y=3
Step-by-step explanation:
Answer:
2X x 3 = 1y x 2
3x = y
6x = 2y
Step-by-step explanation:
probably right / probably wrong