Answer:
13) 1,11 14) 1,2,11,22 15) 1, 2, 4, 7, 14, 28 16) 1, 2, 4, 8, 16, 32 17) 1, 2, 3, 6, 7, 14, 21, 42
Step-by-step explanation:
I belive its number one :)
Step-by-step explanation:
a) The total cost C is given by
b) If the total cost is $400, then we can solve for the number of hours as
Solving for n, we get
Answer:
2520 stones which will cost £6300
Step-by-step explanation:
First find area of path:
630 x 120 = 75600 cm²
then find how many stones will be needed:
75600/30 = 2520
then find out the total cost:
2520 x 2.5 = £6300
Hope this helps!
Answer:
r=3/4
Step-by-step explanation:
(135/2) / 90 = 0.75
(405/8) / (135/2) = 0.75
0.75 = 3/4
