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stepan [7]
3 years ago
12

Why is it important to line up the digits in each place value position when subtracting?

Mathematics
2 answers:
Aleksandr [31]3 years ago
5 0
It would not make sense if you were to do 
   34 
     28
The right way is 

34
28

Another example is that if you were to subtract by 1 digit by 2

78
  1

This is the wrong one

78
1


Katarina [22]3 years ago
5 0
So that you don't subtract the wrong numbers and get the wrong answers. ,
123
-----
386
_____
?
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Solve the system of equations<br> 3x – 2y + 4z = -14<br> -4x + y + 4z = -16<br> -3x - y - 4z = 2
Naddika [18.5K]

Answer:

x,y,x = 2,4, -3

Step-by-step explanation:

8 0
3 years ago
The mean of 10 values is 19. If further 5 values are
Leokris [45]

Answer:

22

Step-by-step explanation:

Pretend the 10 values in the first sentence are a,b,c,d,e,f,g,h,i,j

Pretend the addition 5 values is k,l,m,n,o

So the mean of all the 15 data is (a+b+c+d+e+f+g+h+i+j+k+l+m+n+o)/15=20

So the sum of all 15 data is  a+b+c+d+e+f+g+h+i+j+k+l+m+n+o=300                since 15(20)=300

Now let's look at the first 10:  We have their mean so we can write:

(a+b+c+d+e+f+g+h+i+j)/10=19

so a+b+c+d+e+f+g+h+i+j=190                               since 10(19)=190

So that means using our first sum equation and our equation sum equation we have

190+k+l+m+n+o=300

      k+l+m+n+o=300-190

      k+l+m+n+o= 110

So the average of those 5 numbers mentioned in your problem is 110/5=22

3 0
3 years ago
What is the cosine ratio of <br> A. 15/8<br> B. 15/17<br> C. 8/15<br> D.8/17
Aleksandr-060686 [28]

Answer:

your answer will be option d

Step-by-step explanation:

because cosine =base/hypotenus

and here 8/17

hope ur help

5 0
2 years ago
Read 2 more answers
Please help please help!!!​
True [87]

Step-by-step explanation:

If the die has 6 sides, this will be 10 or under, but there are 2160 ways this can happen

8 0
2 years ago
Select the correct answer.
liraira [26]

Answer:

c and d

Step-by-step explanation:

4 0
3 years ago
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