Step-by-step explanation:
Simple
128.04 - 8.287
= 119.753
Answer:
maybe its 30688399329932080?
Step-by-step explanation:
Answer: 21, 28
Step-by-step explanation:
- Side #1 = x
- Side #2 = x + 7
- Hypotenuse = 35
Use the Pythagorean Theorem 
:
Substitute in the values & solve:
<em><u>-28 is not a possible solution since you can't have negative inches...</u></em>
- a = x = 21
- b = x + 7 = 21 + 7 = 28
- c = 35
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Let X = the 29% alloy and Y = the 60% alloy.
They want a total of 80kg, so you have X +Y = 80
Rewrite that to get X = 80-Y
You also want 0.20X + 0.60Y = 0.52(80)
Replace X with 80-y:
0.20(80-y) + 0.60y = 0.52(80)
Simplify:
16 - 0.20y + 0.60y = 41.6
Combine like terms:
16 +0.40y = 41.6
Subtract 16 from each side:
0.40y = 25.6
Divide both sides by 0.40
y = 25.6 / 0.40
y = 64
Now you have Y replace y with 80 in X = 80-Y
X = 80 - 64
X = 16
They need 64 Kg of the 60% alloy and 16 Kg of the 20% alloy.
