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sleet_krkn [62]
3 years ago
10

Can you simplify 3/r + 7/r+3

Mathematics
1 answer:
Nutka1998 [239]3 years ago
7 0
Combine the fractions by finding a common denominator. 
10r+9/r(r+3)
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Help please... <br>show work if you can<br>Thank you!!!​
son4ous [18]
Just cut the piece into two and multiply all the sides
7 0
3 years ago
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A supervisor finds the mean number of miles that the employees in a department live from work. Which mileage is within a z-score
Vikentia [17]
The z-score tells you how many standard deviations from the mean. 

<span>1.5 * 3.6 = 5.4 miles </span>

<span>So anything within 5.4 miles of the average (29). </span>

<span>The range would be: </span>
<span>29 - 5.4 = 23.6 </span>
<span>to: </span>
<span>29 + 5.4 = 34.4 </span>

<span>23.6 ≤ x ≤ 34.4 </span>

<span>Answer: </span>
<span>B) 24 miles</span>
7 0
4 years ago
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Simplify 2- 5/8 and -2 3/5 A. -6 33/40 B. 4- 3/8 C. 4 3/8 d. 6 33/40
worty [1.4K]

Answer:

Step-by-step explanation:

Convert mixed fraction to improper fraction.

-2\dfrac{5}{8}*(-2\dfrac{3}{5})=\dfrac{-21}{8}*\dfrac{-13}{5}\\

                    =\dfrac{(-21)*(-13)}{8*5}\\\\\\=\dfrac{273}{40}\\\\=6\dfrac{33}{40}

4 0
3 years ago
Red blood cell is about 7.5 micrometers in diameter. A coarse grain of sand is about 70 micrometers in diameter. Find the differ
yarga [219]

Answer:

Difference = 62.5 micrometer

Step-by-step explanation:

Given that:

Diameter of red blood cell = 7.5 micrometer

Diameter of coarse grain of sand = 70 micrometers

For calculating the difference between two diameters, we will subtract the diameter of red blood cell from diameter of grain of sand.

Difference = 70 - 7.5

Difference = 62.5 micrometer

Hence,

Difference = 62.5 micrometer

5 0
3 years ago
Which number is irrational?<br> O A 3<br> 17<br> O B. 25<br> O C. 0.5<br> O D. 33
stepladder [879]

Step-by-step explanation:

that square of 2 irtional

:))))))))))

5 0
3 years ago
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