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garri49 [273]
3 years ago
11

Jack is 4 times as old as lacey. 7 years ago the sum of their age was 61. how old are they now?

Mathematics
1 answer:
BaLLatris [955]3 years ago
7 0
I am guessing Jack is 51 and Lacey is 17.

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Find a polynomial of degree 3 with a real coefficient that satisfies the given condition. Zeros: -2, 1, 0; f(2)=32
xz_007 [3.2K]
Its factors would be
(x+2)*(x-1)*(x+0)

x^2 +x -2

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Equation: x^3 + x^2 -2x
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4x^3  + 4x^2  -8x = 0




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Read 2 more answers
What is the irrational number in This set: 12.89, square root of 12 and 12/144 ?
kifflom [539]
Good night, 

<span>Irrational numbers are those that can't be expressed as a fraction:

12.89 can be expressed as: </span>\frac{1289}{100}

\frac{12}{144}= \frac{1}{12}

<span>The above numbers can be expressed as a fraction, then the logical answer is: </span>\sqrt{12}

But we will check the answer: 

\sqrt{12}= \sqrt{2^{2}*3 }  =2* \sqrt{3} =3.4641016...

As you can see we can't express that number as a fraction, so that is te correct answer.

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Your answer is 3277 because a negative divided by a negitive  makes it a positive.

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3 years ago
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