Hello,
f(1)=2-9+12-12+10-3=0 ===>(x-1)*....
f(3)=2*3^5-9*3^4+12*3^3-12*3^2+10*3-3=0 ===> (x-3)*....
f(1/2)=2*(1/2)^5-9*(1/2)^4+12*(1/2)^3-12*(1/2)^2+10*1/2-3=0 ===>(2x-1)*...
f(x)=(x-1)(x-3)*(2x-1)*(x²+1)
In C, x=i ou x=-i
Zeros are 1/2,1,3,i,-i
Notice that 45 hours is 3 times the half-life of 15 hours.
After the first 15 hours, 450 g decays to half this amount, 225 g.
After the next 15 (total 30), 225 g decays to 112.5 g.
After the next 15 (total 45), 112.5 g decays to 56.25 g.
Answer:
c
Step-by-step explanation:
gggehheueuru jshgsgsgsgsgsggsgs
A large soft drink costs one and a half times as much as small soft drink. If a small drink costs n dollars, write an expression representing how much a large drink costs.
A) 1.5n
B) 1.5 + n
C) 0.5 + n
D)
1
__ n
2