A is 307.2
b is 6.4 min maybe just a little less
Answer:
Answer is B
Step-by-step explanation:
if the quardenent are all positive it is located in quadrant one!
Answer:
The area is 128 inches squared.
Step-by-step explanation:
12 times 8 is 96, plus the two side triangles (32 when combined) is 128.
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
The answer would be y=-2x-13
