Answer:
x2+5x+6=0
Step-by-step explanation:
4x - y = 5 --> 4x = y + 5
substitute
4x + 4y = -4
(y + 5) + 4y = -4
5y + 5 = -4
5y = -9
y = -1.8
solve x
4x = y + 5 = -1.8 + 5 = 3.2
x = 3.2/4 = 0.8
Answer:
7 hours
Step-by-step explanation:
120 x 7 = 840
Answer:
should be 63
Step-by-step explanation:
Answer:
2159.74
Step-by-step explanation:
you times 456 by 4 then you times that answer by the 1742%