A number consists of two digits whose sum is 9. If 9 is added to the number its digits are inter changed. Find the number.​

Answers

Answer 1

Solution:

Let the two digits of a number be X and Y

Let the digit at 10's place = X

Let the digit at 1's place = Y

The two digit number = 10X+Y

Given that

The sum of the digits = 9

⇛ X+Y = 9

⇛X = 9-Y →→→→eqn(i)

If 9 is added to the number the digits interchanged

⇛10X+Y +9 = 10Y+X

⇛10X+Y+9-10Y-X = 0

⇛9X-9Y +9 = 0

⇛9(X-Y+1) = 0

⇛X-Y+1 = 0

⇛9-Y-Y+1 = 0

⇛10-2Y = 0

⇛2Y = 10

⇛Y = 10/2

⇛Y = 5

Now

X = 9-5 = 4

Therefore the number = 45 Ans.

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A Number Consists Of Two Digits Whose Sum Is 9. If 9 Is Added To The Number Its Digits Are Inter Changed.
Answer 2

Answer:

see that attachment

I hope it's help you

A Number Consists Of Two Digits Whose Sum Is 9. If 9 Is Added To The Number Its Digits Are Inter Changed.
A Number Consists Of Two Digits Whose Sum Is 9. If 9 Is Added To The Number Its Digits Are Inter Changed.
A Number Consists Of Two Digits Whose Sum Is 9. If 9 Is Added To The Number Its Digits Are Inter Changed.
A Number Consists Of Two Digits Whose Sum Is 9. If 9 Is Added To The Number Its Digits Are Inter Changed.

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Hey can u help me plsss I really need help don’t just press for points.

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Step-by-step explanation:

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Answer:

Step-by-step explanation:

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Answers

Answer:

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Step-by-step explanation:

Given equation:

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Answers

Answer:

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Answers

Answer:

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Step-by-step explanation:

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Answer:

h = a * sin α

Step-by-step explanation:

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Answers

Answer:

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Step-by-step explanation:

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Chau needs to buy plastic forks. Brand A has a box of 12 forks for $1.12. Brand B has a box of 25 forks for $2.69. Find the unit price for each brand. Then state which brand is the better buy based on the unit price. Round your answers to the nearest cent.

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Answers

Answer:

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Answers

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Step-by-step explanation:

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Answers

Answer:  126 degrees

====================================================

Explanation

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The measure of angle 1 = 2 × The measure of the angle 2 + 18

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Answers

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Answers

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Step-by-step explanation:

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Answers

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Answer:

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Step-by-step explanation:

Find the value of each variable in the given figures

Answers

Answer:

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Step-by-step explanation:

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Answers

Answer:  y = -(1/2)x + 3

Step-by-step explanation:

y = 2x - 1

This is in the format of y=mx + b, where m is the slope and b is the y-intercept (the value of y when x=0).

Perpendicular lines have a slope that is the negative inverse of the reference line.  The slope of this reference line is 2, so the slope of a perpendicular kline will be -(1/2).

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y = -(1/2)x + 3

what is10 + 9

i really dont know

can someone help me

Answers

[tex] \huge \green{ \boxed{ANSWER}}[/tex]

[tex]10 \: + \: 9 \: = {\boxed{19}}[/tex]

USE CALCULATOR -_-

[tex] \mathfrak{JazmineChoi}[/tex]

STAN TREASURE

Answer:

19

Step-by-step explanation: 10 +9 = 19

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