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mafiozo [28]
3 years ago
13

4) An expression containing only numbers is called _ _ _ _ _ _ _ _ _.

Mathematics
1 answer:
RSB [31]3 years ago
3 0

Answer:

Step-by-step explanation:pi

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The expression 2(l + w) is used to calculate the perimeter of a rectangle, where I is length and w is width. If the length is 2/
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Step-by-step explanation:

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Step-by-step explanation:

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3 years ago
What is the solution to the system of equations? Use any method. {3x+y=32x+y=7 {2x+y=7
LuckyWell [14K]

Answer:

x = 12  and  y = 1

Explanation:

Given equations are:

(1) ------  1 3 x − y = 3

(2)------ 2 x + y = 25

Multiply (1) by 3 to eliminate the fractional part,

(1) -------  x − 3 y = 9  ⇒ x = 9 + 3 y

-------- let this be equation (3)

Now substitute this value of  

x

from (3) in equation (2),

(2) ---------  2 ( 9 + 3 y ) + y = 25  ⇒ 18 + 6 y + y = 25  ⇒ 7 y = 25 − 18  ⇒ y = 7 7

Therefore,

y = 1

Substituting this value of  

y

in equation (3),

x = 9 + 3 × 1  

x = 9 + 3

Therefore,

x = 12

So we have the values of  

x  and  y  as,

x = 12

and  

y = 1

╦────────────────────────────╦

│Hope this helped  _____________________│    

│~Derelis ____________________________ │

╨___________________________________╨                  

6 0
4 years ago
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Step-by-step explanation:

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3 years ago
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