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Marysya12 [62]
3 years ago
15

PHOTO ADDED PLEASE HELP

Mathematics
2 answers:
son4ous [18]3 years ago
4 0
70/9 divide by 7/1
70x 1
9x7
70/63
= 1 1/9
asambeis [7]3 years ago
3 0
Exact form: 10/9 decimal form: 1.111 mixed number form: 1 1/9
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Answer:

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Step-by-step explanation:

We are using proportions to solve this problem by putting students over adults

students         3                   24

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adults                 1                   a

where a is the unknown number of adults

Using cross products

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2 years ago
What is (4x+-7)(2x+-9)
uysha [10]

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We move all terms to the left:

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(4x-7)-((2x-9))=0

We get rid of parentheses

4x-((2x-9))-7=0

We calculate terms in parentheses: -((2x-9)), so:

(2x-9)

We get rid of parentheses

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Back to the equation:

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We get rid of parentheses

4x-2x+9-7=0

We add all the numbers together, and all the variables

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2x=-2

x=-2/2

x=-1

(4x+-7)=(2x+-9)

We move all terms to the left:

(4x+-7)-((2x+-9))=0

We add all the numbers together, and all the variables

(4x-7)-((2x-9))=0

We get rid of parentheses

4x-((2x-9))-7=0

We calculate terms in parentheses: -((2x-9)), so:

(2x-9)

We get rid of parentheses

2x-9

Back to the equation:

-(2x-9)

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4x-2x+9-7=0

We add all the numbers together, and all the variables

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We move all terms containing x to the left, all other terms to the right

2x=-2

x=-2/2

x=-1

8 0
3 years ago
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