**350 grams** of **magic steel** and **350 grams** of dragon** alloy #33** is needed to make** 700 grams **of Dragon** alloy #18**.

<h3>What is an equation?</h3>

An equation is an** expression** that shows the** relationship** between two or more numbers and variables.

Let **x **represent the amount o**f magic steel **and** y** represent the amount of **alloy #33**, hence:

**(0 * x) + (y * 0.28) = 700(1 - 0.86) ** (1)

Also:

**x + (1 - 0.28)y = 0.86(700)** (2)

From both equations:

**x = 350, y = 350**

**350 grams** of **magic steel** and **350 grams** of dragon** alloy #33** is needed to make** 700 grams **of Dragon** alloy #18**.

Find out more on **equation at: **brainly.com/question/2972832

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**Answer:**

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**Step-by-step explanation:**

Correct solution:

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**Simplify**

**Answer:**

19.7

**Step-by-step explanation:**

a^2+b^2=c^2

so 18^2+8^2=x^2

324+64=388

x is about 19.7

**Answer:**

To convert a fraction to a percent we take the fraction and multiply it by 100

If we want to convert 1/2 to a percent:

1/2 × 100 = 50%

Or we can convert the fraction to a decimal and then multiply it by 100:

1/2 = 0.5 = 0.5 × 100 = 50%