The bottom row of a stack of blocks contains 11 blocks. The row above it contains 9 blocks. The next higher row contains 7 blocks. The rows continue in this pattern, and the top row contains a single block. How many blocks does the stack
contain in all?
6 blocks
36 blocks
b. 24 blocks
d. 48 blocks

1,407.5 hours

step-by-step explanation:

we first convert all the time to hours and then sum them up.

there are 24 hours in 1 day, in 58 days, there are 24 x 58 = 1,392 hours.

there are 60 minutes in 1 hour, thus, 30 minutes will be equivalent to 30 / 60 = 0.5 hours.

therefore, the number of hours it will take mercury to complete a full rotation is 1,392 + 15 + 0.5 = 1,407.5 hours

27/4x^6 y^8

step-by-step explanation:

4(3x^2y^4)^3 (2x^3y^5)^4

=

108x^6 y^12 /16x^12 y^20

=

108 /16x^6 y^8

=

27 /4x^6 y^8