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Roman55 [17]
3 years ago
6

A rectangular packet of drink has a width that is 2 cm less than its length.

Mathematics
1 answer:
snow_lady [41]3 years ago
6 0

Answer:

6m^2+8m-16

Step-by-step explanation:

Given that the length of the packet is l=m cm.

Then the width being 2cm less than the length becomes w=m-2 and the height being 4 cm more than its length becomes h=m+4

The total surface area of the rectangular packet is given by:

T.S.A=2(lw+lh+wh)

\implies T.S.A=2[m(m-2)+m(m+4)+(m-2)(m+4)]

We expand to get:

\implies T.S.A=2(m^2-2m+m^2+4m+m^2+4m-2m-8))

\implies T.S.A=2(3m^2+4m-8)=6m^2+8m-16

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Answer:

B: c^11

Step-by-step explanation:

Separate the equation:

c^14/c^6 + c^3/c^6

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c^8 + c^3-6

c^8 + c^-3

Turn the -3 positive

The final equation = c^8+c^3

Therefore, c^11 is the correct answer.

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Answer:

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Step-by-step explanation:

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_____X^2+10x+10_____
Viefleur [7K]
The problem in the picture would be
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3 years ago
Ginny factored 6x2 – 31x – 30 as shown: ac = –180 and b = 31 36(–5) = –180 and 36 + (–5) = 31 6x2 + 36x – 5x – 30 6x(x + 6) – 5(
meriva

Answer:

Ginny made a mistake in step 1 when she identified b = 31. It should be b=-31

Step-by-step explanation:

Ginny factored 6x^2 -31x -30 as shown:

ac = –180 and

b = 31

36(–5) = –180 and 36 + (–5) = 31

6x^2 + 36x – 5x – 30

6x(x + 6) – 5(x + 6)

(x + 6)(6x – 5)

b is the coefficient of x and from the trinomial 6x^2 -31x -30, b=-31.

Therefore Ginny made a mistake in step 1 when she identified b = 31. It should be b = –31.

The correct steps are: 6x^2 -31x -30:

ac = –180 and

b = -31

36(–5) = –180 and -36+5 = -31

6x^2-36x +5x -30  

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