what is the prime factorization of 28 ?

Question|Asked by allysoncuster

Asked 5/2/2014 5:37:18 PM

Updated 5/2/2014 6:06:46 PM

2 Answers/Comments

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Flagged by jerry06 [5/2/2014 6:06:46 PM]

unknown12|Points 20|

unknown12|Points 20|

Question|Asked by allysoncuster

Asked 5/2/2014 5:37:18 PM

Updated 5/2/2014 6:06:46 PM

2 Answers/Comments

This conversation has been flagged as incorrect.

Flagged by jerry06 [5/2/2014 6:06:46 PM]

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3

The prime factorization of 28 is 2 x 2 x 7.

Added 5/2/2014 6:06:30 PM

This answer has been confirmed as correct and helpful.

Confirmed by alfred123 [5/2/2014 6:08:18 PM]

3

The prime factorization of 78 is 2 x 3 x 13.

Added 5/2/2014 6:06:43 PM

This answer has been confirmed as correct and helpful.

Confirmed by alfred123 [5/2/2014 6:08:19 PM]

what are the dimensions of a rectangle if the area of a rectangle is 33 yd^2 and the length of the rectangle is 5yd less than twice the width?

Question|Asked by allysoncuster

Updated 5/19/2014 12:22:59 AM

1 Answer/Comment

Let w be the width of the rectangle, its length is: 2w - 5.

Rectange area = width x length = w(2w - 5) = 33

2w^2 - 5w - 33 = 0

(w + 3)(2w - 11) = 0

w = -3 (not possible) or w = 11/2 yd.

length = 2(11/2) - 5 = 11 - 5 = 6 yd.

Rectange area = width x length = w(2w - 5) = 33

2w^2 - 5w - 33 = 0

(w + 3)(2w - 11) = 0

w = -3 (not possible) or w = 11/2 yd.

length = 2(11/2) - 5 = 11 - 5 = 6 yd.

Added 5/19/2014 12:22:59 AM

This answer has been confirmed as correct and helpful.

Confirmed by jeifunk [5/19/2014 4:52:39 AM]

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