give the meaning of the concepts​

Answer:

Definition of equivalent

1 : equal in force, amount, or value also : equal in area or volume but not superposable a square equivalent to a triangle. 2a : like in signification or import. b : having logical equivalence equivalent statements. 3 : corresponding or virtually identical especially in effect or function

Step-by-step explanation:

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Step-by-step explanation:

equal in force, amount, or value also : equal in area or volume but not superposable a square equivalent to a triangle. 2a : like in signification or import. b : having logical equivalence equivalent statements. 3 : corresponding or virtually identical especially in effect or function.

Answer:

a uniform time for places in approximately the same longitude, established in a country or region by law or custom.

Answer:

31=x

and

43=y

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Answer: The value of x=3 and the value of y=1.

Step-by-step explanation: The given equations are [tex]21x + 47y = 110[/tex] and [tex]47x + 21y = 162[/tex]

To find: The values of [tex]x[/tex] and [tex]y[/tex]

Solution: Given equation

                                        [tex]21x + 47y = 110[/tex]                               ... (1)

                                        [tex]47x + 21y = 162[/tex]                               ... (2)

Now we will find the values of [tex]x[/tex] and [tex]y[/tex] using Substitution method.

Considering the equation (1)

[tex]21x + 47y = 110[/tex]

Subtracting [tex]47y[/tex] on the left hand side and right hand side as well

[tex]21x + 47y - 47y = 110 - 47y[/tex]

[tex]21x = 110- 47y[/tex]

Now, dividing by 21 on both the sides, we will get

[tex]\frac{21x}{21} =\frac{ 110- 47y}{21}[/tex]

[tex]x=\frac{ 110- 47y}{21}[/tex]                          ...(A)

Now, putting the value of [tex]x[/tex] in equation (2), we get

[tex]47(\frac{ 110- 47y}{21}) + 21y = 162[/tex]

[tex](\frac{5170-2209y}{21}) + 21y = 162[/tex]

Now, taking LCM on the LHS of the equation

LCM of 21 and 1 is 21

[tex]\frac{5170-2209y+441y}{21} = 162[/tex]

Multiplying 21 on both the sides we get,

[tex]5170-2209y+441y = 3402[/tex]

[tex]1768y= 1768[/tex]

[tex]y= \frac{1768}{1768}[/tex]

[tex]y= 1[/tex]

Now, putting the values of y in equation (A)

[tex]x=\frac{ 110- 47(1)}{21}[/tex]

[tex]x=\frac{63}{21}[/tex]

[tex]x=3[/tex]

Therefore, the value of x=3 and the value of y=1.

Answer:

sorry I don't know answer for third question

Hope u got the answer for first and second question