Answer:
Step-by-step explanation:
is pretty simple
292,000/100=2,920
Answer:
No; 0.075(15 + s) = 3; s = 25 oz
Step-by-step explanation:
No, but <em>you are close</em>.
The mass of copper in your 800 grade silver is
Mass = 0.20 × 15 = 3 oz
You are adding s oz of silver so that 7.5 % of the total mass is still 3 oz of copper.
The equation becomes
0.075(15 + s) = 3 Divide both sides by 0.075
15 + s = 40 Subtract 15 from each side
s = 25 oz
You add 25 oz of silver to your 800 grade alloy to get sterling
.
<em>Check:
</em>
0.075(15 + 25) = 3
0.075 × 40 = 3
3 = 3
Answer:
40
Step-by-step explanation:
Use the Pythagorean Theorem. That will give you the missing side length and then add them together to get 40.
You forgot to attach an image!
A. 292 days on its side, 73 on its ends
B. 292 days of the year and depends on how many days are in the month