The answer is 5 boxes. First we have to do 60 x 2 to find out the area of the walkway (120 ft). Then since the tiles are 2 by 2 feet and come in 6 boxes we do, 2 x 2 to find the area of 1 tile,which is 4 ft, then we multiply that by 6 to find out the total amount of tiles which is 24. We then divided 120 by 24 to find out how much boxes we will need which is 5. Hope that helped :)
Answer:
Step-by-step explanation:
Hint: 1- 2sin²x = Cos 2x
LHS = 1 - 2Sin² (π/4 - Ф/2)
= Cos 2 *(π/4 - Ф/2)
= Cos 2*π/4 - 2*Ф/2
= Cos π/2 - Ф
= Sin Ф = RHS
Assuming they work until their cost become the same, obviously.
The difference between the first charge of painter A and painter B = 376 - 280 = 96.
The hourly cost difference between painter B and painter A = 15 - 12 = 3.
So, painter A in the first hour has 96 more dollars than painter B, and as every hour pass, the difference goes down by 3 (as painter B gets 3 more dollars every hour)
Therefore, it would take 96 : 3 = 32 hours for the cost to be the same
Recheck : After 32 hours, painter A has 376 + 32 x 12 = 760 (dollars)
painter B has : 280 + 15 x 32 = 760 (dollars)
Irrational numbers are numbers that do not repeat or terminate. π is a common example. 3+0.4=3.4, this number terminates. 0.444...+0.4=0.8444..., this number repeats.