Answer:
x²=2x-1>>
x²-2x+1=0
x=1
y²-4 = 5x>>
y²= 5×1+4=9
y=3
x_2=z-2>>
z=x=1
Yes
Step-by-step explanation:
I had this same question on a quiz and it is correct!
4x + 7x - 2 + 5x - 10 = 180
16x - 12 = 180
16x = 192
x = 12
m<A= 4x = 4(12) = 48
m<B = 7x - 2 = 7(12) - 2 = 84 - 2 = 82
m<C = 5x - 10 = 5(12) - 10 = 60 - 10 = 50
0
13 patients had 0 cavities, according to the table! The righthand column is the frequency of people, and the left is the number of cavities they had.