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Black_prince [1.1K]
2 years ago
5

The area of a rectangle is 2x*2-13x+12 and another area is 6x^2-13x+21, what is the combined area of both rectangles?

Mathematics
1 answer:
saul85 [17]2 years ago
8 0

Answer:

8x^2 - 26x + 33

Step-by-step explanation:

Add the expressions.

2x^2 - 13x + 12 + 6x^2 - 13x + 21 =

= 2x^2 + 6x^2 - 13x - 13x + 12 + 21

= 8x^2 - 26x + 33

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Old McDonald had a farm. In one pen the old farmer had chickens and bulls together. In that pen there were 40 animals in total,
SVETLANKA909090 [29]

Answer:

There are 15 numbers of chicken and 25 numbers of bulls.

Step-by-step explanation:

The pen had chickens and bulls.  The pen contains 40 animals in total. The number of legs in the pen is 130 .

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b = number of bull

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A chicken has 2 legs and a bull has 4 legs.

The total legs can be represented as

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combine the equation

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insert the value of a in equation(ii)

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80 - 2b + 4b = 130

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divide both sides by 2

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