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olganol [36]
3 years ago
11

A way to write numbers by showing the value of each digits

Mathematics
1 answer:
Dmitriy789 [7]3 years ago
4 0

The answer to your question is called PLACE VALUE

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lisov135 [29]

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4 0
3 years ago
-7(a - 3) = 11 - 7a<br> what’s the answer
natali 33 [55]

Answer:

the statement is false there is no solution

Step-by-step explanation:

step 1       -7(a-3)=11-7a

step 2      -7a+21=11-7a

step 3      cancel out the -7a's

step 4       you are left with 21=11 which does not work so it is false

8 0
3 years ago
If 3a + 2b = 7 and 2a + 2b = 9 , what is the value of
Simora [160]
Hey there :)

We have two equations:
3a + 2b = 7 
2a + 2b = 9

We need to solve simultaneously to find the values of a and b

eq.1    3a + 2b = 7
eq.2 ( 2a + 2b = 9 ) x -1  ) multiply by -1 to cancel 2b

  3a + 2b = 7
- 2a - 2b = -9         ( Add both together )
-------------------
   a = - 2 

Substitute the value you found for a in a in order to find b

3( - 2 ) + 2b = 7                                                     2( - 2 ) + 2b = 9 
- 6 + 2b = 7                                    OR                  - 4 + 2b = 9
2b = 13                                                                   2b = 13        
b = \frac{13}{2}                                                                 b = \frac{13}{2} 

3 0
3 years ago
Which function is graphed?
Hitman42 [59]

Answer: D

x < 1 is parabol curve

x ≥ 1 is a line

5 0
3 years ago
A chemist is mixing one solution that is 32% sodium and another solution that is 12% sodium how many liters of each type should
Brut [27]
In order to solve the amount of each solution, we need to set up equations. We do as follows:

Let x = solution with 32% sodium
      y = solution with 12% sodium

Overall balance
x + y = 50

Component balance
.32x + .12y = 50(.20) =10

Solving simultaneously,

x = 20
y = 30

Hope this answers the question. Have a nice day.
6 0
3 years ago
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