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Contact [7]
3 years ago
14

Factorise 84xy+196x-36y-84

Mathematics
1 answer:
LenaWriter [7]3 years ago
4 0

Hi,

84xy+196x-36y-84

4(21xy+49x-9y-21)

4(7x × (3y+7)-9y-21)

4(7x × (3y+7)-3(3y+7)

4(3y+7)×(7x-3)

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Find the minimum value of
Lana71 [14]

Answer:

14

Step-by-step explanation:

2x + y = 20                                                                                     (1)

2x + 3y = 36                                                                                  (2)

(2) - (1) ⇔ (2x - 3y) - (2x + y) = 36 - 20

          ⇔ 2y = 16

          ⇔ y = 8                                                                               (3)

From (3) and (1), we have:

    2x + y = 2x + 8 = 20

⇔ 2x = 12

⇔ x = 6

So: C = x + y = 6 + 8 = 14

Conclusion : C = 14

Brainliest, please?

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3 years ago
Randy can run six-tenths of a mile every 4 minutes, but it takes Julie 5 minutes. By the time Julie has run for 20 minutes, how
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Answer:

D!!!

Step-by-step explanation:

you have to make a table to see that randy has run 3 miles.!!!

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3 years ago
Arnold can read 3 pages in 7 minutes. Brenda can read 8 pages in 14 minutes. Who is the faster reader? Justify your answer.
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Answer:

Brenda

Step-by-step explanation:

You can divide the number of pages by the number of minutes to find the amount of minutes it takes to read 1 page. For Arnold, 3 pages / 7 minutes = 1 page per approximately 0.43 minutes. For Brenda, 8 pages / 14 minutes = 1 page per approximately 0.57 minutes. Brenda reads slightly faster since 0.57 > 0.43

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Jane moved from a house with 77 square feet of closet space to an apartment with 50.82 square feet of closet space. What is the
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26.18 divided by 77 = 0.34. Therefore the percentage change = 66%
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3 years ago
I need an answer soon. Thanks!
Anika [276]
The answer is, x-5 equals to 0. So x equals to 5. So your answer is 5.
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