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(#M40118000) BOOK QUESTION Keep an EYE

I just wanted to know if I did this problem right. Please e-mail me the answer so I can check it out thanks.

1 / radical x + 2 / x

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(#M40117999) EXAM QUESTION Keep an EYE

Hi!
Please help me, with this question, the problem says:
Evaluate each of the following if a=3 and b=4
(a-b)^3
Please and Thank You=)

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(#M40117998) EXAM QUESTION Keep an EYE

Can you please help me solve this: Solve these equations for whatever variable they contain. Be sure to find all the values of the variable that make the equation true.
z^2 - 14z + 2 = 2 - 11z

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(#M40117997) EXAM QUESTION Keep an EYE

what am i doing wrong?
¼ = 3 - (2x-1)/(x+2)
¼ * 4(x+2) = 3 - {(2x-1)/(x+2)} *4(x+2)
x + 2 = 3 - (2x - 1)4
x + 2 = 3 - (8x - 4)
x + 2 = 7 - 8x
x + 2 - 2 = 7 - 2 - 8x
x +8x = 7 - 8x +8x
9x = 7
9x/9 = 7/9
x = 7/9

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(#M40117996) EXAM QUESTION Keep an EYE

Use the discriminant to determine the kinds of numbers that will satisfy the equation 5x = x^2 - 3. Do not solve

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(#M40117995) EXAM QUESTION Keep an EYE

i need help figuring this one out.. thanks

Write an equation of an ellipse with the given characteristics.
center(-1,5), vertex (3,5), co-vertex(-1,7)

thank you!

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(#M40117994) BOOK QUESTION Keep an EYE

how do you use elimination to solve for the x and the y
11x - 5y = 80
9x - 15y = 120

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(#M40117992) BOOK QUESTION Keep an EYE

A man invests in a mutual fund, part of which earned 11% interest and part of which earned 6.5%. If the total amount invested was $5000 and the interest earnd was $345, how much wa

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(#M40117991) EXAM QUESTION Keep an EYE

5x+10=15
6x-12=18
2x+11=21
6x-16=20
4x+12=24

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(#M40117990) BOOK QUESTION Keep an EYE

Write the following numbers in expanded form.
123 base5

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