Hello,
Codes are :
5_6_7, 5_7_6
6_5_7,6_7_5
7_5_6,7_6_5
Choising the first (3 possibilities)
next choising the second (2 possibilities)
chosing the last (1 possibility)
So 3*2*1=6
Answer A
445 . Answer:
Step-by-step explanation:
Answer:
its in number 2
please mark as brainliest
Answer:
#8 might be y= -3x + 5
Step-by-step explanation:
This may help
Answer:
two real, unequal roots
Step-by-step explanation:
y is definied as y = 3x - 1. Substitute 3x - 1 for y in xy = 9, obtaining:
x(3x - 1) = 9. Then:
3x^2 - x - 9 = 0. In this quadratic, the coefficients are a = 3, b = -1 and c = -9.
Calculating the discriminant b^2 - 4ac, we get (-1)^2 - 4(3)(-9), or 1 + 108, or 109. Because the discriminant is positive, we have two real, unequal roots.
