Answer:
the answer is x=5
Step-by-step explanation:
hoped I helped:)
Table b is correct. I cant give a full answer due to circumstances but there you go.
Answer:
A, B, and D
Step-by-step explanation:
I just went through and did that math
Hope this helps!
Answer:
tons of high steel and
tons of low steel
Step-by-step explanation:
Let x be the number of tons of high grade steel and y be the number of tons ow low grade steel needed.
In x tons of high grade steel there are
tons of iron
tons of magnese
In y tons of low grade steel there are
tons of iron
tons of magnese
NASA orders 500 tons of steel, so
![x+y=500](https://tex.z-dn.net/?f=x%2By%3D500)
and specifies that it must be in the proportion 80% iron and 20% magnese, so
![0.85x+0.67y=500\cdot 0.8\\ \\0.85x+0.67y=400](https://tex.z-dn.net/?f=0.85x%2B0.67y%3D500%5Ccdot%200.8%5C%5C%20%5C%5C0.85x%2B0.67y%3D400)
From the first equation,
![x=500-y](https://tex.z-dn.net/?f=x%3D500-y)
Substitute it into the second equation:
![0.85(500-y)+0.67y=400\\ \\425-0.85y+0.67y=400\\ \\-0.18y=-25\\ \\y=\dfrac{2,500}{18}=138\dfrac{8}{9}\ tons\\ \\x=361\dfrac{1}{9}\ tons](https://tex.z-dn.net/?f=0.85%28500-y%29%2B0.67y%3D400%5C%5C%20%5C%5C425-0.85y%2B0.67y%3D400%5C%5C%20%5C%5C-0.18y%3D-25%5C%5C%20%5C%5Cy%3D%5Cdfrac%7B2%2C500%7D%7B18%7D%3D138%5Cdfrac%7B8%7D%7B9%7D%5C%20tons%5C%5C%20%5C%5Cx%3D361%5Cdfrac%7B1%7D%7B9%7D%5C%20tons)
Answer:
<em>N = 1/2x + 6</em>
Step-by-step explanation:
We know that Jane has 6 more shoes than 1/2 of what Mercedes has. We can use this information to make an equation.
<em>N (or number of shoes Jane has) is equal to 1/2x (or the number of shoes Mercedes has) plus 6.</em>
When written out we get our answer of:
<em>N + 1/2x + 6</em>