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3 years ago

A rectangle has sides measuring (6x + 4) units and (2x + 11) units.

Mathematics

1 answer:

rusak2 [61]3 years ago

5 0

Answer:

Step-by-step explanation:

Part A)

Area Rectangle = base x height = length x width = side1 x side2

= (6x + 4) (2x +11)

= (6x) (2x +11) + 4(2x + 11)

= 12x² + 66x + 8x + 44

= 12x² + 74x + 44

Part B) I don't know these terms but if I had to guess....... second degree and polynomial ???? possibly quadratic ????

Part C) Sorry, I don't know what the closure property is, so I can't explain how it demostrates it.

I can do the math, but I didn't know or have long forgotten the trival termonology. I looked up the closure property in Gaggle and I still don't understand it.

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What is the value of the slope of the line x-3y=11? A) 1/3 B)11/3 C)-3

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I am probably going to get this wrong but I believe it is c

Step-by-step explanation:

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3 years ago

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Perform the indicated operation. Be sure the answer is reduced. 3/n^2-9 + 7/3-n =

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This is a basic algebraic fraction question

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3 years ago

The line plot shows the weights of all the fish caught on a fishing trip.

Natalija [7]

Answer:

B) 4 3/4

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We are looking for the total weight of the fish that weight more than 1 1/4 lbs

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3 years ago

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Is the product of x-4 and 5x^2-3x+6 equal to the product of x+4 and -5x^2+2x-6?

suter [353]

Answer:

Not equal

Step-by-step explanation:

To find if they are equal, find the product of each first by multiplying each term using exponent rules.

$(x-4)(5x^2-3x+6) \\\\5x^3 -20x^2 - 3x^2 + 12x + 6x - 24\\\\ 5x^3 - 23x^2 + 18x - 24$

and

$(x+4)(-5x^2+2x-6)\\\\-5x^3 - 20x^2 + 2x^2+8x-6x-24\\\\-5x^3-18x^2 +2x - 24$

These expressions are not the same.

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3 years ago

Heather says that the expressions 4 x minus 2 x plus 8 and 2 left parenthesis x plus 4 right parenthesis are not equivalent beca

Alexxx [7]

Yes, Heather is correct. The expressions are not equivalent

Solution:

Given that,

Heather says, the following expressions are not equivalent

$4x - 2x + 8\ and\ 2(x-4)$

Because one expression has a term that is subtracted and the other does not

Combine the like terms in first expression:

$4x - 2x + 8 = 2x +8$

Let us first expand the second expression

By distributive property

a(b + c) = ab + bc

Therefore,

$2(x-4) = 2x - 8$

Thus the two expressions are:

$2x + 8\ and\ 2x-8$

Yes both the expressions are not equivalent

Because, in first expression 2x is added to 8

But in second expression, 8 is subtracted from 2x

Thus heather is correct

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4 years ago