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damaskus [11]
3 years ago
7

Solve the system using substitution. Show all work. ( 4х + 5y = 7 у = 3х + 9

Mathematics
1 answer:
Lina20 [59]3 years ago
3 0

Answer:

(4x+5y=7

y=3x+9

4x+5(3x+9)=7

4x+15x+45=7

19x=7-45

19x= -38

19×/19=-38/19

x= -2

whlie y=3x+9

y=3(-2)+9

y= -6+9

y=3 end solution

x= -2,y= 3

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Item 2
Inessa05 [86]

The question is an illustration of a division model.

The boxes will be completed with: 1650, 231, 50 and 7

The expression is represented as:

\mathbf{1881 \div 33}

Express 1881 as 1650 + 231.

\mathbf{1881 \div 33 = (1650 + 231) \div 33}

Split

\mathbf{1881 \div 33 = 1650 \div 33 + 231 \div 33}

Evaluate each division

\mathbf{1881 \div 33 = 50 + 7}

\mathbf{1881 \div 33 = 57}

The above illustration means that, the boxes will be completed with the following numbers

  • 1650
  • 231
  • 50
  • 7

See attachment for proper illustration

Read more about division models at:

brainly.com/question/15163437

8 0
2 years ago
Who ever helps me gets brainliest​
Archy [21]

Answer:

\frac{1}{2} cups of flour

Step-by-step explanation:

Substitute 1 in for m.

f=\frac{1}{2}(1)

Simplify.

f=\frac{1}{2}

7 0
3 years ago
Caroline is making some table decorations.
jolli1 [7]

Answer:

Caroline buys 3 packs of candles and 5 packs of holders.

Step-by-step explanation:

1.) You need to add numbers of candle packs together until they both reach the same number, for example, multiples of 30 are 30, 60, 90.

2.) Then you add multiples of the holders. 18, 36, 54, 72, 90.

3.) You find that Caroline buys 3 pakcs of candles and 5 packs of holders to have the same number of both.

6 0
4 years ago
Use the distributive property to write the expression as a product<br> 10+70x
grigory [225]

Answer:

10(1+7x)

Step-by-step explanation:

Just factored out the 10.

4 0
3 years ago
PLZZ HELP ME ITD MEAN THE WORLD
SSSSS [86.1K]

Answer: 33/3

Step-by-step explanation:

I don't know the question is weird but it probably is 33/3

8 0
3 years ago
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