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Law Incorporation [45]
3 years ago
15

What is the best estimate of of the sum of the fractions?

Mathematics
2 answers:
Ronch [10]3 years ago
4 0
Let's add the fractions first and then we can estimate the sum.


= 31/4 + 17/3 + 8/18
change to common denominators

= 279/36 + 204/36 + 16/36
add numerators only

= 499/36 or 13 31/36 or 13.86


ANSWER: (B) 13 is the best estimate of the answer. Normally we round up to 14 with a number like 13.86, but since that is not a choice, we can estimate 13 as the answer.
Rom4ik [11]3 years ago
4 0

Answer:

b

Step-by-step explanation:

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6 and -3

6 + -3 = 3

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Hope that helps! 
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Veda solves the following system of linear equations by eliminations. What is the vale of x in the solution of the system of equ
kupik [55]

Answer:

x = -1, y = 1

Step-by-step explanation:

6 + 4x - 2y = 0 (1)

-3 - 7y = 10x (2)

From (1)

6 + 4x - 2y = 0 (1)

4x - 2y = -6 (3)

From (2)

-3 - 7y = 10x (2)

10x + 7y = -3 (4)

4x - 2y = -6 (3)

10x + 7y = -3 (4)

Using elimination method

Multiply (3) by 10 and (4) by 4 to eliminate x

40x - 20y = -60

40x + 28y = -12

28y - (-20y) = -12 - (-60)

28y + 20y = -12 + 60

48y = 48

y = 48/48

y = 1

Substitute y = 1 into (3)

4x - 2y = -6 (3)

4x - 2(1) = -6

4x - 2 = -6

4x = -6 + 2

4x = -4

x = -4/4

x = -1

x = -1, y = 1

The value of x in the equation is -1

4 0
3 years ago
What will be the coordinates of Q?<br> A (-6, -5)<br> B (-5, -6)<br> C (5, 6)<br> D (6, 5)
Svetradugi [14.3K]

Answer:

I Dont understand

Step-by-step explanation:

6 0
3 years ago
The greatest common factor of 3m2n + 12mn2 is
Karolina [17]
3m^2n + 12mn^2=3mn\cdot(m+4n)
6 0
3 years ago
Read 2 more answers
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