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vovangra [49]
3 years ago
7

Select the expressions equivalent to

Mathematics
2 answers:
Brums [2.3K]3 years ago
8 0

Answer:

D

Step-by-step explanation:

We have the expression:

(-2x+8.1y)-(-9x+5.3y)

First, let's distribute the negative on the right. This gives us:

=(-2x+8.1y)+(9x-5.3y)

Now, let's combine like terms:

=(-2x+9x)+(8.1y-5.3y)

Add:

=(7x)+(8.1y-5.3y)

Subtract:

=(7x)+(2.8y)

Simplify:

=7x+2.8y

So, our answer is D.

And we're done!

torisob [31]3 years ago
6 0

Answer:

d.  7x + 2.8y

Step-by-step explanation:

You have to combine like factors to solve.  Distribute before solving.

(-2x + 8.1y) - (-9x + 5.3y)

-2x + 8.1y + 9x - 5.3y

7x + 8.1y - 5.3y

7x + 2.8y

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7.73 , 5.4332 , 7.7 , 7.703 from least to greatest
likoan [24]

Answer:

5.4332, 7.7, 7.03, and then 7.73

4 0
2 years ago
Read 2 more answers
The expression -10y²+54y+36 represents the profits made by a company when it increases the price of the product by y dollars. Fa
stiv31 [10]

Answer:

− 2( 5 y + 3 ) ( y − 6 )

Step-by-step explanation:

hope it helps

7 0
3 years ago
I NEED HELP PLEASE I
Juli2301 [7.4K]

Answer:

10x+40

Step-by-step explanation:

To solve you must follow these steps:

1. Multiply the outside (5) by the first number on the inside (2x) and you get 10x

2. Multiply the outside (5) by the second number on the inside of the parenthesis (8) and you get 40

3. You are left with 10x and 40, so your answer is 10x+40

Hope this makes sense, have a wonderful day!

4 0
2 years ago
Read 2 more answers
Susan has $15 gift certificate to use at her favorite clothing store. She chooses a T-Shirt that cost $5.78, a pair of jeans tha
lina2011 [118]

Hahahajajahahahahahahahah

4 0
3 years ago
One month Donna rented 5 movies and 6 video games for a total of $48. The next month she rented 3 movies and 2 video games for a
faltersainse [42]

Answer:

Cost for each movie: $1.50 Cost for each video game: $6.75

Step-by-step explanation:

Let x be the cost (in dollars) of renting a movie.

Let y be the cost (in dollars) of renting a video game.

The total cost of renting 3 movies and 2 video games is +3x2y dollars.

We're given that this total cost is $18, so we have =+3x2y18.

The total cost of renting 5 movies and 6 video games is +5x6y dollars.

We're given that this total cost is $48, so we have =+5x6y48.

Therefore, we get the following system of equations.

=+3x2y18

=+5x6y48

Multiplying the first equation by −3 and adding gives us the following.

   −9 x− 6 y = −54      5 x+ 6 y =  48     −4 x+ 0 y = −6  

So we get the equation =−4x−6.

Solving for x, we get the following.

=x1.5

To find y, we can substitute 1.5 for x in =+3x2y18, the first equation in the system.

Then we solve for y.

+31.52y =18

+4.52y =18

2y =13.5

y =6.75

So, we have found that =x1.5 and =y6.75.

This means that the rental cost for each movie is $1.50 and the rental cost for each video game is $6.75.

4 0
3 years ago
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