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luda_lava [24]
3 years ago
11

Factorize​ab(ab-bc)+bc(bc-ab)​

Mathematics
2 answers:
EleoNora [17]3 years ago
6 0

Answer:

(ab - bc)^2.

Step-by-step explanation:

ab(ab - bc) + bc(bc - ab)​

= ab(ab - bc) - bc(ab - bc)​

= (ab - bc)(ab - bc)

= (ab - bc)^2

Bond [772]3 years ago
5 0

Answer:

(ab-bc)²

Step-by-step explanation:

  • ab(ab-bc)+bc(bc-ab)​ =                 ⇒ distribution
  • (ab)² - ab*bc + (bc)² - ab*bc =     ⇒ regrouping
  • (ab)² - 2ab*bc + (bc)² =                ⇒ applying (x-y)² = x² -2xy +y² formula
  • (ab-bc)²                                        ⇒ final result
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Arianna gathered data about the distance of 20 cities from the equator and the average hours of sunlight per day in December for
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<u>Answer-</u>

<em>A. strong negative correlation.</em>

<u>Solution-</u>

<u>Direction of a relationship</u>

  1. Positive- If one variable increases, the other tends to also increase. If one decreases, the other tends to also. It is represented by positive numbers(i.e 0 to 1).
  2. Negative- If one variable increases, the other tends to decrease, and vice-versa.  It is represented by negative numbers(i.e 0 to -1)

<u>Strength of a relationship</u>

  1. Perfect Relationship- When two variables are linearly related, the correlation coefficient is either 1 or -1. They are said to be perfectly linearly related, either positively or negatively.
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As in this case, correlation coefficient was found to be -0.91, which is negative and close to -1, so it is a strong negative correlation.


5 0
2 years ago
The classroom had 35 glue sticks. If the ratio of glue sticks to glue bottles was 5 : 2, how many glue bottles did the classroom
Marat540 [252]

Answer:

14 glue bottles.

Step-by-step explanation:

Let's use a ratio:

sticks : bottles

  5     :     2

  35   :    14

There are 14 glue bottles in the classroom.

7 0
3 years ago
Kathi and Robert Hawn had a pottery stand at the annual Skippack Craft Fair. They sold some of their pottery at the original pri
grigory [225]

Answer:27 pieces were sold at the original price.

63 pieces were sold at the new price

Step-by-step explanation:

Let x represent the number of pieces of pottery that was sold at the original price.

Let y represent the number of pieces of pottery that was sold at the new price.

They sold some of their pottery at the original price of​ $9.50 for each​ piece. This means that the amount that they got from selling x pieces of pottery at the original price would be 9.5x

They later decreased the price of each piece by​ $2. This means that the new price was 9.5 - 2 = $7.5

This means that the amount that they got from selling x pieces of pottery at the new price would be 7.5y

If they sold all 90 pieces and took in ​$729​, then the equations are

x + y = 90

9.5x + 7.5y = 729 - - - - - - - - - -1

Substituting x = 90 - y into equation 1, it becomes

9.5(90 - y) + 7.5y = 729

855 - 9.5y + 7.5y = 729

- 9.5y + 7.5y = 729 - 855

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y = - 126/- 2 = 63

Substituting y = 63 into x = 90 - y, it becomes

x = 90 - 63 = 27

6 0
2 years ago
A bicycle shop advertised all mountain bikes priced at a 1/3 discount what is the amount of the discount if the bicycle original
german

Answer: 109

Step-by-step explanation:

327=3/3

so divide 327 by 3 to get 109

8 0
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