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postnew [5]
3 years ago
11

Sandra wants to evaluate 2 cot Her work is shown below. What did she do wrong?

Mathematics
1 answer:
Sedbober [7]3 years ago
8 0

The correct answer is A its an odd function!

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4 years ago
The roots of a quadratic equation are 4 and -5. Which quadratic equation has these roots?
Y_Kistochka [10]

Answer:

(x-4)(x+5) or x^2+x-20

Step-by-step explanation:

If a root of the function is 4, (meaning that when y=0, x=4) it can be rewritten as x-4.

The same goes for if a root is -5. it will simplify to x+5.

These are called factors of a quadratic equation.

Put together, they look like (x-4)(x+5). Using the FOIL method, that can be simplified to x^2+x-20

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3 years ago
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Step-by-step explanation:

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4 years ago
Just a few more word problems.
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