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 of 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:
The mistake she made was ; She didn't change the sign when subtracting -3/4 from both sides
She wrote 5/4+3/4 instead of 5/4-3/4
Step-by-step explanation:
Correct solution:
Subtract-3/4 from both sides
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%
