a certain number of two digit is three times the sum of its digit and if 45 added to it the digit will be reversed find the number ?​

Answers

Answer 1
· Author has 184 answers and 67.6K answer views
Let the number be (10 x + y)

Then, 10 x + y = 3 * (x + y) (given)

Or, 10 x + y = 3 x + 3 y

Or, 10 x - 3 x = 3 y - y

Or, 7x = 2 y

Or, x = 2 y / 7 ( Eq. 1)

Also, 10 x + y + 45 = 10 y + x ( given)

Or, 10 x - x = 10 y - y - 45

Or, 9 x = 9 y - 45 ( Eq. 2)

Substituting the value of x from (Eq. 1) in (Eq. 2), we have:

9 * 2 y / 7 = 9 y - 45

Or, (9 y ) - (18 y / 7) = 45

Or, 63 y - 18 y = 315

Or, 45 y = 315

Or, y = 7

From (Eq. 1),

x = 2 * 7 / 7 = 2

So, the number is 10 x + y = (10 * 2) + 7 = (20 + 7) = 27

Answer

Check:

Sum of the digits = 2 + 7 = 9

9 * 3 = 27 ✓

Adding 45 to the number 27, we get 72. So, the digits get reversed.

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I'm asking this question again! Please answer correctly, nonsense will be reported!
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Show your work.

Answers

Answer:

2x-3<x+2<3x+5

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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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Answers

Based off of the formula you were given (-b/2a), ply the numbers into it

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Answers

answer: =-5(z+1) x (z-29)
The answer is


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Kent can paint a room in twice as fast as Luannda. Together they can paint the room in 5 hours. How long would it take Kent to paint the room alone? Write an equation to solve

Answers

Answer:

for kent it would be [tex]\frac{1}{5}[/tex]

Step-by-step explanation:

The computation is shown below:

Let us assume Luannda be [tex]\frac{x}{1}[/tex]

And for kent be 2x

Together they take 5 hours

So

[tex]\frac{x}{1} + \frac{2x}{1} = 5\ hours\\\\3x = 5\\\\x = \frac{5}{3}[/tex]

So for kent it would be [tex]\frac{1}{5}[/tex]

FREE BRAINLIEST IF YOU ANSWER CORRECTLY!!(jwo26)

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Answer:

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Step-by-step explanation:

Answer:

56!!!!!!

Step-by-step explanation:

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Answer:

Step-by-step explanation:

In order:

50.24,

12.56,

3.14,

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Answers

Answer:

6

Step-by-step explanation:

23+25=48

48÷8=6

I know that this is simple algebra but I am asking for your help step by please will mark brainliest for who gets this right.

Answers

I believe it’s 3 ( x - 12 )

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Step-by-step explanation: Down below Have a brilliant day-Lily ^_^

Max car holds 18 gallons of gasoline driving on the highway the car uses approximately 2 gallons per hour. let H represent the number of hours max has been riding on the highway. write an expression that shows how many gallons of gasoline Max has left after driving H hours. then find the number after max drives 3.5 hours on the highway.

Answers

y= 18 gallons-2(h)
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Answers

how do we help u??? we can’t graph for u

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Answers

Hope this helps you with your question

can anyone solve this?
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Answers

The answer is,

[tex]2x(3x + 5)(x - 1)[/tex]

sorry if wrong.

The vertices of a triangle are A(-1,4), B(4, 5),
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Answer:

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Answers

Answer:

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Step-by-step explanation:

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Which expression has the same value as 8 – (-1)?​

Answers

Answer: 9

Step-by-step explanation:

Two negatives make a positive. So the expression 8-(-1) is equal to 9, because the two subtraction signs the equation create an addition sign, and the equation becomes 8 + 1.

Therefore, 9 has the same value as 8-(-1).

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∛5

∛23

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∛99

Your answer:

Answers

Cube root of 5= 1.71 so between 1 and 2
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2.1
B
Ob
D
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od
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Answers

Answer:

I think the answer is C

Step-by-step explanation:

456÷12= 38

95÷38= 2.447 (about 2.5)

Find RSQ and TSQ I will Brainliest

Answers

RSQ = 32
TSQ = 58
X = 5

Hope this helps!!!!

Answer:

Hey there!

15x-43+8x+18=90

23x-25=90

23x=115

x=5

RSQ=15(5)-43, or 32

TSQ=8x+18, or 58

Let me know if this helps :)

Step-by-step explanation:

vera está usando su teléfono. Su batería está a 2/5 de capacidad, y esta baja 1/9 cada hora. ¿Cuántas horas durará la batería?

Answers

Answer:

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Step-by-step explanation:

The computation of the number of hours will the battery last is given below:

Given that

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Answers

Answer:

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Step-by-step explanation:

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Answers

Answer:

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Step-by-step explanation:

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Answers

Answer:

x = 5

Step-by-step explanation:

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Select the correct answer.
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Answers

Answer:

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Step-by-step explanation:

Since, £1 = $1.41

Therefore, £2,000 = 2000*1.41 = $2,820

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Answer:

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Step-by-step explanation:

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Answers

Answer:

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Step-by-step explanation:

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i hope this made sense... have a good day !

As
MZLON = 113
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M

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Find mZMON:
Pro

Answers

Answer:

Step-by-step explanation:

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NOT DONE YET

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Answers

Answer:

0.7

Step-by-step explanation: (4/5)*7)/8

Hope this helps:)

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