Top answers

Why does Dido refuse to look at Aeneas in Aeneid 6.450–476?

This passage takes place in the Underworld, and is a confrontation between the ghost of Dido and the living Aeneas, who has been allowed to visit the Underworld so that he can speak with the ghost of his fat...
LA
Answered by Lavinia A. • Latin tutor
8735 Views

Find the values of k for which the equation (2k-3)x^2-kx+(k-1) has equal roots

We know that an equation has equal roots if the sqrt(b^2-4ac) term in the quadratic equation is equal to zero. Therefore using this information we can form an expression for k to be (-k)^2-4(2k-3)(k-1)=0. Fr...
EH
Answered by Eliott H. • Maths tutor
13763 Views

P(A)=0.2, P(A|B) = 0.3 and P(AuB)=0.6. Find i P(B) ii P(B'|A')

i. P(AuB) = P(A) + P(B) - P(AnB) P(AnB) = P(A|B)P(B) = 0.3P(B) P(AuB) = P(A) + 0.7 P(B) --> 0.6 = 0.2 + 0.7 P(B) --> P(B) = 4/7 ii. P(B'|A') = P(A'nB')/P(A') P(A'nB') = 1 - P(AuB) P(B'|A') = 0.4/0.8 = 1/2
WS
9937 Views

Briefly describe the concept of electronegativity and explain why CCl4 is a non-polar molecule

Electronegativity is the tendency of an atom to attract a pair of electrons in a covalent bond. The Pauling scale assigns values to this tendency for each element in the periodic table ranging from the lowes...
SS
Answered by Samora S. • Chemistry tutor
26214 Views

Earth is being added to a pile so that, when the height of the pile is h metres, its volume is V cubic metres, where V = (h6 + 16) 1 2 − 4.Find the value of dV/dh when h = 2.

As V=(h 6 +16) 1/2 -4 , the chain rule can be used to calculate dV/dh. dV/dh=3h 5 (h 6 +16) -1/2 h=2 can be substituted in to find the solution. 3 2 5 (2 6 +16) -1/2 =10.73
LK
Answered by Lewis K. • Maths tutor
6650 Views