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galben [10]
3 years ago
5

Which ordered pair is a solution of 9(x – 2)2 – 4(y + 5)2 ≥ 36?

Mathematics
2 answers:
sashaice [31]3 years ago
7 0

Answer:

c

Step-by-step explanation: just took test on edge

ira [324]3 years ago
3 0

Answer:

its c kiddos

Step-by-step explanation:

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A metallurgist has one alloy containing 45% copper and another containing 69% copper. How many pounds of each alloy must be use
lakkis [162]

5.25 pounds of one alloy containing 45% copper and 36.75 pounds of 69% copper is used to make 42 pounds of 66% copper

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

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

Let x represent the amount of 45% copper and y represent the amount of 66% copper needed to make 42 pounds of a third alloy containing 66% copper. Hence:

x + y = 42   (1)

Also:

0.45x + 0.69y = 42(0.66)   (2)

This gives:

x = 5.25, y = 36.75

5.25 pounds of one alloy containing 45% copper and 36.75 pounds of 69% copper is used to make 42 pounds of 66% copper

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

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Answer:

1/3

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Luis solves the following system of equations by elimination.
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The value of s is 11
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How do you solve (7-2)/5 step by step
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7 - 2 = 5

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The answer would be 1.
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Read 2 more answers
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