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Aloiza [94]
3 years ago
6

Alfonso solved a division problem by drawing an area model . a. Look at the area model . What division problem did Alfonso solve

? 4 40 32
Mathematics
1 answer:
r-ruslan [8.4K]3 years ago
8 0

Answer:

The answer is "\frac{72}{4} =18".

Step-by-step explanation:

Given value:

4 40 32

Solution:

{\boxed{4\ \boxed{40} \ \boxed{32}}}

If we divide the value by 4 it will give 10 and 8.

\to \frac{40}{ 4} = 10\\\\\to \frac{32}{ 4} = 8\\

If we add the boxed value it will be equal to 72 and divide the value by 4 it will give a value 18.

\to 40+32 =72\\\\\to \frac{72}{4}=18

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(-2x+3y=8....(i)<br>( x+y=2.........(ii)<br>solve by elumination method and substitution​
yan [13]

Answer:

 x = -2/5

 y = 12/5

Step-by-step explanation:

Substitution method;

-2x + 3y = 8  -----------(i)

x + y =2   -----------(ii)

x = 2 - y

substitute the value of x in equ (i)

  (-2)* (2-y) + 3y = 8

     -4 + 2y + 3y = 8

                   5y = 8 + 4

                     y = 12/5

substitute the value of y in equ (ii)

x + 12/5 = 2

        x = 2 - 12/5

           = 2*5/1*5 - 12/5  

          = 10 -12/5 = -2/5

Ans: x = -2/5

       y = 12/5

elimination method:

-2x + 3y = 8  -----------(i)

x + y =2   -----------(ii)

                                    (i)   ====>    -2x + 3y = 8

multiply equ (ii) by 2         ====>    <u>  2x + 2y = 4</u>

             add (i) and (ii)                             5y = 12

                                                                   y = 12/5

Substitute in equ (ii)

x + 12/5 = 2

        x = 2 - 12/5

           = 2*5/1*5 - 12/5  

          = 10 -12/5 = -2/5

Ans: x = -2/5

       y = 12/5

                                                       

               

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