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wel
2 years ago
5

A certain number was divided by 3 and 3 was added to the result. The final answer was 8 what was the number​

Mathematics
1 answer:
nevsk [136]2 years ago
5 0

Answer:

15

Step-by-step explanation:

x/3 + 3 = 8

x/3 + 9/3 = 8

x + 9 = 24

x = 15

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Which sets of numbers are closed under subtraction?
stealth61 [152]
Integers are closed under subtraction.

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3 years ago
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a fuel mixture consists of 3 parts oil and 11 parts gasoline. the oil costs $0.75 per liter, and the gasoline costs $1.60 per li
kupik [55]

Answer:

Total selling price= $663.82

Selling price per liter= $1.69

Step-by-step explanation:

Giving the following information:

Proportion of oil and gasoline:

Oil= 3/14= 0.21

Gasoline= 11/14= 0.79

The oil costs $0.75 per liter.

The gasoline costs $1.60 per liter.

<u>First, we need to calculate the number of liters of oil and gasoline required:</u>

<u></u>

Oil= 0.21*392= 82.32 liters

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<u>Now, the total cost to produce 392 liters:</u>

Total cost= 82.32*0.75 + 309.68*1.6

Total cost= $577.23

<u>Finally, the total and unitary selling price:</u>

Total selling price= 577.23*1.15= $663.82

Selling price per liter= 663.82 / 392= $1.69

6 0
3 years ago
Let a be a rational number and b be an irrational number. Is a + b rational or irrational?
Svetlanka [38]

Answer:

irrational

Step-by-step explanation:

because an irrational number goes on forever so no matter what number is added to it it will always be irrational.

4 0
3 years ago
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What is the rational number equivalent to 3.12 repeating? 3 4/33, 3 8/33 ,3 10/33 ,3 5/33?
Schach [20]
3.12 = 3 4/33 (<span>3.12 repeating)</span>
hope it helps
5 0
3 years ago
What is 70x + 56y = 56,000 into Slope-Intercept Form?
MAVERICK [17]

Answer:

i belive that the awnser is y=-1.25x+1000

Step-by-step explanation: you want to get y by itself so you would subtract x from both sides leaving you with

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y=-1.25x+1000

7 0
3 years ago
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