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bixtya [17]
3 years ago
15

Explain, step by step, how to arrive at a single rational number to represent the following expression. Show both a written expl

anation and the related math work for each step. 1 - 3/4 + (-12 1/4)
Mathematics
1 answer:
Neporo4naja [7]3 years ago
7 0

Answer:

-30

Step-by-step explanation:

first you should complete the equition of bracket

1-3/4+(-121/4)

= 1-3/4+(-30.25)

= 1-0.75+(-30.25)

=0.25+(-30.25)

=-30

hence the right answer is -30 :)

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Fittoniya [83]
You really just have to do 12.4 x 2 = 24.8 because half of 24.8 is 12.4.
3 0
3 years ago
What is the sum of the measure of the interior angles of an octagon
Afina-wow [57]

Answer:

1080°

Step-by-step explanation:

formula to find the sum of interior angles of a polygon is (n-2)×180

octagon has 8 sides so n=8

(8-2)×180

6×180

=1080°

6 0
3 years ago
2 2/3 plus 3 1/4 as a fraction
oksano4ka [1.4K]

Answer:

5\frac{11}{12} or \frac{71}{12}

Step-by-step explanation:

6 0
3 years ago
Please help ASAP
sashaice [31]
I don’t know I’m only in 7th grade but 56
3 0
3 years ago
I don't know help me
Nataliya [291]
Ok so the first step would be to distribute 3 into 3x and -6. So 3 times 3x would be 9x. 3 times -6 is -18. 

the equation now is 
18 = 9x - 18

Now you would have to do inverse operation 

18 = 9x - 18
+18       +18

36 = 9x 

Now you would divide 9x into 36 to isolate the variable

36 / 9x = 4
x = 4


7 0
3 years ago
Read 2 more answers
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