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Aleksandr [31]
3 years ago
9

Multiply and simplify. (2x - 1)(6x - 7)

Mathematics
1 answer:
Kryger [21]3 years ago
8 0

Answer:

D) 12x² - 20x + 7

Step-by-step explanation:

Use FOIL when multiplying 2 binomials...

FOIL is Firsts, Outsides, Insides, Lasts.  It's the order in which you multiply the numbers in the binomials...

(2x - 1)(6x - 7)    

Firsts:  (2x)(6x) = 12x²

Outsides:  (2x)(-7) = -14x

Insides:  (-1)(6x) = -6x

Lasts:  (-1)(-7) = 7

Now add them up...

12x² - 14x - 6x + 7

    12x² - 20x + 7

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He saves $14.50

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We can find the discount by multiplying the price by the percentage off

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He saves $14.50


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By what factor would your weight be multiplied if earth's diameter were 1/ 4 as big and earth's mass remained unchanged?.
GenaCL600 [577]

Answer:

  16

Step-by-step explanation:

Your weight is (roughly) proportional to the inverse of the square of the distance you are from the center of the earth. If that distance is reduced to 1/4 its previous value, then your weight will be multiplied by the factor ...

  1/(1/4)² = 16

You would weigh 16 times as much.

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<em>Additional comment</em>

The distribution of mass within the earth also affects your weight.

3 0
3 years ago
A tin is a right circular cylinder with a diameter of 6 meters and a height of 10 meters. What is the surface area of this tin,
Alex777 [14]

Answer:

245.04

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The area of a trapezoid is 168cm2. The height is 16cm and the length of one of the parallel sides is 9cm. Find the length of the
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Answer:

12 cm

Step-by-step explanation:

The formula for the area of a trapezoid is written as:

1/2(b1 + b2)h

h = height = 16 cm

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