4x+5x = 90
9x = 90
x = 10
10y + 10 + 5x = 180
10y + 10 +5(10) = 180
10y + 60 = 180
10y = 120
y = 12
answer
<span>d) x = 10, y = 12</span>
< This is the answer!!!!!!
Answer: 45
Step-by-step explanation:
18 = 40% N
18 = 0.4 N
Divide both sides by 0.4
N = 45
The expression (5x + 4)^3 in expanded form is 125 x3 + 300
x2 + 240 x + 64. The expression will
have also a root of x = -4/5. This is the form of trinomial expansion and can
be solve by multiplying the the term 3
times.