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frosja888 [35]
3 years ago
12

I need help with this please, thank​

Mathematics
1 answer:
aleksandrvk [35]3 years ago
4 0
5x+4y=8

-5x from both sides, you get 4y=-5x+8
then you divide the equation by 4.

y=-5/4x+2

10x-4y=46

-10x from both sides and you get -4y=-10x+46
divide the whole equation by -4 and you get y=5/2x + -23/2 .

source: MathPapa

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Plz help if u can 20 pt please just don't take the points..
sergey [27]

Answer:

b. 28x + 8y +2

Step-by-step explanation:

you need to distribute the -2 to all the numbers inside parentheses and then combine like terms.

-2*3x= -6x

-2*12y= -24y

-2*-5= 10 (remember neg times neg = pos)

-2*17= 34x

-2*-16y=32y

-2*4= -8

Now combine like terms

34x-6x= 28x

32y-24y=8y

10-8=2

Write the expression:  28x + 8y +2

5 0
3 years ago
Change the width 20/16 inches to a mixed numeral in simplest form.
Iteru [2.4K]

Answer:1 and 1/4


Step-by-step explanation:

Okay, let's see the given: 20/16

So, we can take out 16 from the top to make it 1  4/16

Now, we can simplify that by dividing the top and bottom by 2: 1  2/8

We can simplify that again to get 1 1/4

So the answer is 1 and 1/4

5 0
3 years ago
Using Triangle Similarity Theorems (6)
Fantom [35]

Answer:

DC = 3

Step-by-step explanation:

Based on triangle similarity theorem, we would have the following equation:

\frac{AD}{AC} = \frac{AE}{AB}

Plug in the values

\frac{9}{9 + DC} = \frac{12}{12 + 4}

\frac{9}{9 + DC} = \frac{12}{16}

\frac{9}{9 + DC} = \frac{3}{4}

Cross multiply

3(9 + DC) = 9×4

27 + 3DC = 36

Subtract 27 from each side

3DC = 36 - 27

3DC = 9

Divide both sides by 3

DC = 9/3

DC = 3

6 0
2 years ago
5 markers cost $6.55.Which equation would help determine the cost of 4 markers?
Semmy [17]

5 markers -------> $6.55

4 markers -------> x

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4 0
1 year ago
The were 12 men at the block party and 40 woman. What fraction of the people were men
Rudiy27

Answer:

12/52= 6/26= 3/13 of the people are men

5 0
3 years ago
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