Answer:
- one half
Step-by-step explanation:
The slope is negative one half.
To find the rate, divide the number divided by the amount of minutes. So 775 divided by 12.5 which is 62.
62 steps per minute
x = amount of 21% alloy
y = amount of 50% alloy
The metallurgist wants a combination weighing a total of 44 lb, so
x + y = 44
Each pound of either alloy contributes either 0.21 or 0.5 pound of titanium. The final product needs to be comprised of 37% titanium; weighing at 44 lb, this means it should contain 0.37 * 44 = 16.28 lb. So
0.21x + 0.5y = 16.28
From the first equation,
x + y = 44 ==> y = 44 - x
Substitute this into the second equation and solve for x:
0.21x + 0.5(44 - x) = 16.28
-0.29x = -5.72 ==> x = 19.72
Substitute this into the first equation to solve for y:
19.72 + y = 44 ==> y = 24.28
Answer:
A. $1
Step-by-step explanation:
The apples logically cost 2 dollars each.
2*3=6 Gives us the cost of 3 apples
The dollar left over is how much the juice will cost.
