19. A rectangular block of wood measures 3cm
by 6 cm by 4 cm has a mass of 80.0 grams. What
is the density of the wood?
a. 5760 g/cm
b. 0.9 cm3/g
c. 1.11 g/cm3
d. 80 g/cm3

Ineed to know the answer right now! !

Me solve this problem, and someone clearly explain to me how to solve it.1.) use the value of the discriminant to determine if the given trinomials has 2 real solutions, 1 real solution, or no real solutions.a.  x2  − 4x  − 7 = 0b. 4r2  + 11r  − 3 = 0c. 3m2  + 7 = 0d.  t2  + 2t  + 1 = 0

Are triangles the congruent? write the congruency statement.what is the congruency that proves they are congruent? what is the perimeter of ∆pqr?