Answer:
The minimum number of hard cover copies is 120
Step-by-step explanation:
we have to make two equations, one for the total of copies and the other for the relationship between hard cover copies and paperback copies
x = hard cover
y = paperbacks
x = 1/6 y
x + y = 140
we are going to replace in the second equation the value of x by (1/6 y)
x + y = 140
(1/6 y) + y = 140
7/6 y = 140
y = 140 / (7/6)
y = 120
as a result we obtained the minimum number of paperback copies
Answer:
1382.3 cm²
Step-by-step explanation:
We'll assume that we have to find the total surface area, including the areas of the ends.
The area of the side is given by A = 2πr·h and that of each of the ends by A = πr².
Thus, the side area is A = 2π·(10 cm)·(12 cm) = 240π cm² ≅ 754.0 cm²
and double the area of the base is A = 2·π·(10 cm)² = 628.3 cm²
and so the total surface area of the can (including the ends) is 1382.3 cm²
Answer:
1 cm, 40 cm
2 cm, 20 cm
4 cm, 10 cm
5 cm, 8 cm
Step-by-step explanation:
Area of rectangle = L x W
L x W = 40
Possible whole number combinations of length and width are
1, 40
2, 20
4, 10
5, 8
Answer 6 dollars and 52 cents
Step-by-step explanation: 6 1/4 = (6.25)
40.75/6.25 = 6.52 per unit price
Answer:
The radius is 4.2 and the diameter is always twice the amount of the radius so its 8.4.
Step-by-step explanation: