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astraxan [27]
3 years ago
8

Solve the following system of equations algebraically and check. y=x^2+3x+4 y-x=7

Mathematics
1 answer:
FinnZ [79.3K]3 years ago
5 0
Y=x^2+3x+4
y-x=7

x^2+3x+4-x=7
x^2+2x+4=7
(factor) x^2+2x-3=0
(x+3)(x-1)=0
X= -3 and X=1
(Plug x in for y)
Y= 1^2+3(1)+4
Y=8
(Check your answer on the second equation)
8-1=7
7=7 (Which is the solution)
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Answer:


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7 0
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I need halp puh-lease
kozerog [31]
The answer should be 6! all you have to do is plug the numbers into the equation!
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4 0
3 years ago
Read 2 more answers
Use natural logarithms to solve the equation. Round to the nearest thousandth. 6e4x - 2 = 3
frosja888 [35]
6 · e^(4x - 2) = 3
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6 0
3 years ago
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Gala2k [10]

Answer: 500 chicken feed and 200 careful calculators

Step-by-step explanation:

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those are your first two equations

your first matrix equation for A is 2, 3,40,50 and B is 1,600 and 30,000 when you enter those in your calculator and 500 and 200 should be your result.

5 0
3 years ago
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