Answer:
30 each of 23% bars and 18 each of 79% bars
Step-by-step explanation:
If x is the number of 1 kg 23% copper bars, and y is the number of 1 kg 79% copper bars, then:
x + y = 48
0.23x + 0.79y = 0.44(48)
Substituting and solving:
0.23x + 0.79(48-x) = 0.44(48)
0.23x + 37.92 - 0.79x = 21.12
16.8 = 0.56x
x = 30
y = 48 - x
y = 18
You need 30 each of 23% bars and 18 each of 79% bars.
Y = 7x + 12
-7y = x + 56
-7y = x + 56
-7 -7
y = ⁻¹/₇ - 8
The following lines are perpendicular.
Answer:
8.75 mi
Step-by-step explanation:
well it was quite simple. break the problem into more smaller problems then add when solved
Answer:
40 pup tents
Step-by-step explanation:
Since Ground A has area 300 and maximum capacity is 25 tents, so each tent would take up area of 300/25 = 12 sq yards.
Since Ground B's tents should occupy same area as Ground A's tents (12 sq. yards), the maximum capacity of this tent (480 sq yd) would be:
480/12 = 40 pup tents
This is the maximum capacity.
Answer:
hello :
- 3π/4 = (-3×180°)/4 = - 540°/4 = - 135°
Step-by-step explanation:
