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____ [38]
3 years ago
8

Evaluate :5/63-(-6/21)​

Mathematics
1 answer:
Mashcka [7]3 years ago
3 0

Answer:

answer is \frac{23}{63}

Step-by-step explanation:

the equation is

\frac{5}{63}-(-\frac{6}{21} )

=> \frac{5}{63}+\frac{6}{21}

=> \frac{5}{63}+\frac{2}{7} ;(divide numerator and denominator of \frac{6}{21} by 3)

=> \frac{5+2*9}{63}

=> \frac{23}{63}

hope you have understood this

pls mark it as the brainliest

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What is the solution to the system of equations? {2x-2y+z=5 2x-2y+3z=7 -3x-3y+3z=9
german
2x - 2y + z = 5....multiply by -1
2x - 2y + 3z = 7
-------------------
-2x + 2y - z = -5 (result of multiplying by -1)
2x - 2y + 3z = 7
-------------------add
2z = 2
z = 2/2 = 1

2x - 2y + z = 5.....multiply by 3
-3x - 3y + 3z = 9...multiply by 2
-------------------
6x - 6y + 3z = 15 (result of multiplying by 3)
-6x - 6y + 6z = 18 (result of multiplying by 2)
-------------------add
-12y + 9z = 33

-12y + 9(1) = 33
-12y + 9 = 33
-12y = 33 - 9
-12y = 24
y = -24/12
y = -2

2x - 2y + z = 5
2x - 2(-2) + 1 = 5
2x + 4 + 1 = 5
2x + 5 = 5
2x = 5 - 5
2x = 0
x = 0

solution is : (0,-2,1)
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3 years ago
What is 17% of 700 cm =
Gnoma [55]

17% of 700 cm is 1.19 meters.


8 0
3 years ago
Does anyone know?...
Inessa [10]

Answer:

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Step-by-step explanation:

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The results from the last quiz that Mr. Tham gave his class are 10, 15, 25, 75, 75, 77, 80, 83, 85, and 90. Which statistical me
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Answer:

Mean

Step-by-step explanation:

Mean is the average of all results.

Step 1 : Identify the formula of calculating mean

Mean = <u>Sum of all data</u>

             Number of data

Step 2 : Substitute the values in the formula

Mean = <u>10 + 15 + 25 +75 + 75 + 77 + 80 +83 + 85 + 90</u>

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Mean = <u>615</u>

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Mean = 61.5 marks

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7 0
3 years ago
Read 2 more answers
362,584 rounded to nearest thousand
Anvisha [2.4K]
Look at your hundred place is 5 you round it up for the 2 to turn into a 3 so your answer would be 363,000.
5 0
3 years ago
Read 2 more answers
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