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3 years ago

Which are zeros of the following polynomial?

Mathematics

1 answer:

g100num [7]3 years ago

8 0

Answer:

x = -2/3; x = 5/2.

Step-by-step explanation:

6x 2 - 11x - 10 = 0

Use the 'ac' method:

6 * -10 = -60. We need 2 numbers whose product is -60 and whose sum is -11.

That would be -15 and +4. So we write:

6x^2 - 15x + 4x - 10 = 0 Factor by grouping:

3x(2x - 5) + 2(2x - 5) = 0

(3x + 2)(2x - 5) = 0

x = -2/3; x = 5/2.

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Step-by-step explanation: 180 - 120 = 60.

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3 years ago

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3 years ago

Circles M and K are congruent, QR is congrent to LN. Find the length of QR

Novosadov [1.4K]

Given QR is congrent to LN and QR = 4x + 2 and LN = x + 7.

So, QR = LN

Hence, we can set up an equation as following:

4x + 2 = x + 7

4x + 2 - x = x + 7 - x Subtract x from each sides.

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3x + 2 - 2 = 7 - 2 Subtract 2 from each sides.

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So, $x=\frac{5}{3}$

Next step is to plug in $x=\frac{5}{3}$ in QR = 4x+2 to get length of QR.

So, $QR = 4(\frac{5}{3})+2$

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By multiplying the second fraction by the common denominator 3.

$=(\frac{20}{3})+\frac{2*3}{1*3}$

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3 years ago

Which of the statements below is true for the following set of numbers 20,5,50,95,75,60

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Answer:

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Step-by-step explanation:

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Step-by-step explanation:

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3 years ago