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:
h = 1.403733341286
Step-by-step explanation:
17.
the triangle of sides ‘l’ and ‘l-h’ is a right angled triangle.
Then
Then
Then
18.
For l = 6 and θ = 40 :
= 6-6cos(40)
= 1.403733341286
I believe it’s 8^3 I’m sorry if it’s wrong!!!!
The phrase "subtract 7 from c" written in algebraic expression is c - 7
<h3>Algebraic expression</h3>
This is a system of computation using letters or other symbols to represent numbers, with rules for manipulating these symbols.
= c - 7
For instance, if c = 15
c - 7
= 15 - 7
= 8
Therefore, the phrase "subtract 7 from c" written in algebraic expression is c - 7
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Answer:
<h2>18</h2>
Step-by-step explanation:
