Answer:
Step-by-step explanation:
1. Descarte's rule of signs tells you there are 0 positive real roots and 0 or 2 negative real roots. (for positive x, signs are ++++ so have no changes; for negative x, signs are ++-+, so have 2 changes.) A graph shows no real roots.
2. There are 3 sign changes in the given polynomial, so 3 or 1 positive real roots. When the sign of x is changed, there are 2 sign changes, so 0 or 2 negative real roots. A graph shows 2 negative and one positive real root (for a total of 3), so the remaining 2 roots are complex.
we are asked to convert g/mL to kg/L
1 kg is equivalent to 1000 g
then converting g to kg we have to multiply by 0.001 kg/g
1 L is equivalent to 1000 mL
converting mL to L we have to multiply mL by 0.001 L/ml
we can convert 8.41 g/mL as follows
= 8.41 kg/L
answer is 8.41 kg/L