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Svetradugi [14.3K]
3 years ago
12

Trinity can run around the perimeter of her school's sports field in 4.75 minutes. It takes Jing 1.2 minutes longer. Alberto can

run around the perimeter of the field in 5.9 minutes. Which correctly compares Jing's running time to Alberto's running time?
Mathematics
1 answer:
Goryan [66]3 years ago
3 0
We need answer options girl
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Solve the system of equations.<br><br> 5x + y = 9<br> 3x + 2y = 4
tiny-mole [99]
Y=-5x+9

3x+2(-5x+9)=4
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-7x=-14
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5(2)+y=9
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y=9-10
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The answer is (2,-1) :)
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31 - 8a = 5 ( - 4 - 5a )
timama [110]

Answer:

Step-by-step explanation:

31 - 8a = 5(-4 - 5a)

First, on the right-hand side of the equation, let's distribute the 5 to each term in the parenthesis:

31 - 8a = -20 - 25a

Now, let's move all the terms with an a to the left-hand side, and everything else to the right-hand side of the equation:

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Let's combine like terms:

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Finally, let's divide each side by 17 to get a by itself on the left-hand side of the equation:

a = -3

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Anyone can help me with this math question?
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Answer:

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Step-by-step explanation:

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7. f(x)=2+x+1<br> What is the domain
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Answer:

The domain of the expression is all real numbers except where the expression is undefined. In this case, there is no real number that makes the expression undefined.

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