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Alex Ar [27]
3 years ago
14

Solve the following system of equations. 9x - 5y = 11 5x + 4y = -21

Mathematics
1 answer:
IRINA_888 [86]3 years ago
5 0
9x-5y=11

<span>Move all terms containing x to the left, all other terms to the right.
now add 5y to each side and now it should look like this:
</span><span>9x + -5y + 5y = 11 + 5y

Now divide each side by 9 and the answer is....
</span><span>Simplifying x = 1.222222222 + 0.5555555556y</span>
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5 0
4 years ago
A submarine was situated 800 feet below sea level. If it ascends 250 feet, what is its new position?**
Ivahew [28]
Answer:
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Given:
A submarine is located at 800 feet below sea level (i.e) if x is considered as the sea level, then it is located at x - 800. The submarine ascends 250 feet, (i.e) its new position is increased by 250 feet from its previous position, then its new position becomes 800 - 250 = 550 feet. Hence the new position of submarine is located at 550 feet below sea level, x.
6 0
4 years ago
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What is f(–3) for the function f(a) = –2a2 – 5a + 4?
lyudmila [28]

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f(–3)

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4 years ago
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Yuki888 [10]

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7 0
3 years ago
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Can you please help with expression and equations
Nana76 [90]
This video might help you because it helped me https://www.khanacademy.org/math/algebra/one-variable-linear-equations/alg1-intro-equations/v/variab...
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