Answer:
3x^2−8x−3
Step-by-step explanation:
(3x+1)(x−3)
=(3x+1)(x+−3)
=(3x)(x)+(3x)(−3)+(1)(x)+(1)(−3)
=3x^2−9x+x−3
=3x^2−8x−3
Answer: 381.7
Step by step explanation:
1.Make y the subject
k = xy
k/x = xy/x
y = k/x
2.Substitute
y = 7/9
y = 0.777......
y = 0.8 (Answer)
To confirm
k = 9 × 0.8
k = 7.2
k = 7 (constant)
Hope it helps☺
