Let's solve this by substitution.
y is given by the 2nd eqn as y = (1/3)x + 7. Subst. (1/3)x + 7 into the first eqn as a replacement for y: x + 9( (1/3)x + 7) = 3.
clear out fractions by mult. all 3 terms by 3: 3x + 9x + 63 = 3
Combine like terms: 12x = -60. Then x = -5
Find y by subst. -5 for x in the 2nd equation: y = (1/3)(-5) + 7
= -5/3 + 35/3 = 30/3 = 10.
Thus, the solution (x,y) of this system is (-5,10).
Answer:-4,5625 i think
Step-by-step explanation:
Answer:
72.5/8.9 = 8.15
33.2/1.2=27.67
74.3/7.9 = 9.41
35.5/3.2 = 11.09
28.1/3.7 = 7.59
Step-by-step explanation:
Answer:
b
Step-by-step explanation:
