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3 years ago

I need help with this , 7x-3y+4x-5y+8x-6y

Mathematics

2 answers:

valentinak56 [21]3 years ago

6 0

Answer:

19x−14y

Steps:

7x-3y+4x-5y+8x-6y

=19x-3y-5y-6y

= 19x−14y

plz mark as brainliest

OverLord2011 [107]3 years ago

4 0

Answer:

19x-14y

Step-by-step explanation:

rearrange

7x+4x+8x-3y-5y-6y

solve the coefficient and add the variables

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Malloy solved the equation −5x − 16 = 8; his work is shown below. Identify the error and where it was made.

earnstyle [38]

-5x-16=8

-5x=24

$\frac{x}{-5} = \frac{24}{-5}$

$-x=\frac{24}{-5}$

$x=\frac{24}{5}$

above is how to correctly solve the equation

The error is in step 3.

Step 3 as written: $\frac{-5x}{5} = \frac{24}{5}$

This is incorrect because you are removing the 5 from the -5x so it wouldn't be in the numerator.

Hope this helps

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3 years ago

Factor each expression 16x+40y

prohojiy [21]

Hi there!

To factor this expression, you must first find the greatest common factor of each term, 16x and 40y.

To do this, first list the factors of each coefficient since they do not share any variables:
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40:1,2,4,5,8,10,20,40

Notice that among the factors of each term, 8 is the greatest common factor.

Finally, factor 8 from the expression to get 8(2x+5y) as your final answer.

Hope this helps, and have a nice day!

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4 years ago

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The answer to the question is D

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4 years ago

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Naily [24]

Couch: 2x
love seat: 2x+400
chair: x
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The cost of the chair is $233. The cost of the couch is $466. The cost of the love seat is $866.

Hope this helps!

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We know that the formula

$\rm x = \dfrac{-b\pm \sqrt{b^2-4ac}}{2a}$