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ch4aika [34]
3 years ago
12

Evaluate 3 1/6 + 8 2/9 - 1 1/2

Mathematics
1 answer:
Ira Lisetskai [31]3 years ago
8 0
Hello! And thank you for your question!

First to make the question more easy to understand. We are going to make these three fractions improper fractions. 

To do this I will give an example. 3 1/6. Do 6*3+1=19/6

Equation after made improper:

19/6 + 74/9 - 3/2

Now that we have this we can find the answer!

-------------------------------------

Work:

First you are going to find the LCD. And change all the numbers denominators to that LCD.

LCD = 18

Equation After incorporating LCD:

57/18 + 148/18 - 27/18

Second we are going to add all of the numerators together to get:

178/18.

Then simplify 178/18 to get:

89/9

Then convert 89/9 to a mixed fraction:

9 8/9

Final Answer:

9 8/9
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A small plane takes off and heads directly upwind to an airport 40 miles away. It takes 30 minutes to get there. The return trip
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Answer:

Step-by-step explanation:

IIada, Distance = speed*time, so speed = distance/time right?

The plane went the same distance each direction.

s - w = 40/30 = 4/3

s + w = 40/20 = 2

Adding the two equations together...

s = 5/3

w = 1/3

So the speed of the wind in miles per hour is 1/3

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3 years ago
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If the current price of bread dropped by 44 cents, 9 loaves of bread would cost as much as 7 do now. What is the current price o
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Select all of the numbers that are correctly written in scientific notation. 10.8\times10^{-3}10.8×10 −3 0.54\times10^60.54×10 6
Varvara68 [4.7K]

Answer:

<h2><em>1×10⁻⁴ and 9.8×10⁵</em></h2>

Step-by-step explanation:

The standard form of writing a scientific notation is expressed as a.b*10^n where a, b and n are integers. Note that a, b and n cannot be a fraction. When writing in scientific notation, the value of 'a' must not be equal to zero and it must not be a 'two digits values' but just 'a digit value'.

<em>Based on the above conclusion, the following numbers are correctly written in scientific notation.</em>

<em>1×10⁻⁴ and 9.8×10⁵</em>

- The expression 10.8×10 −3 is not correctly written because the value of a on comparison is a two digits number i.e 10.

- Also, 0.54×10^6 is not correctly written because a is zero on comparison

- 7.6×10 2.5 is not correctly written because the power is a decimal number i.e 2.5. We must only have an integer as the degree.

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3 years ago
What is the nth term of this sequence -2 3 8 13 18
yanalaym [24]
Well count up this only shows 5 right? -2 to 3 is 5 then 3 to 8 is 5 then 8 to 13 is 5 then 13 to 18 is 5. Keep going till you get to the 9th number. 

6     7     8     9 
____________
23  28  33   38

38 is your final answer. Well I just hope you said 9th if not go down or up as I just told you. (by 5's)

Hoped I helped!
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3 years ago
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