8. The figure below shows a right pyramid VABCD with a square base ABCD whose area is 144cm height of the triangular face is 8cm.
V
D
C
A
B
(a) Find the
(i) volume of the pyramid (ii) surface area of the pyramid
(b) Angle between
(1) plane VAD and base. (ii) plane VAC and line VB.

Complete the solution of the equation. find the value of y when x equals to 28 x+3y=28

Christine wong has asked dave and mike to her move into a new apartment on sunday morning. she has asked them both, in case one of them does not show up. from past experience, christine knows that there is a 40% chance that dave will not show up and a 30% chance that mik a. what is the probability that both dave and mike will show up? (round your answer to 2 decimal places.) b. what is the probability that at least one of them will show up? c. what is the probability that neither dave nor mike will show up? (round your answer to 2 decimal places.)e will not show up. dave and mike do not know each other and their decisions can be assumed to be independent.

The sum of the squares of two numbers is 8 . the product of the two numbers is 4. find the numbers.