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slava [35]
4 years ago
6

a two digit number is 6 more than 3 times its unit digits.find the number if the sum of its digits is 9

Mathematics
1 answer:
Murrr4er [49]4 years ago
3 0

Answer:

Step-by-step explanation:

We can start as expressing the number as 10x+y, where x is the 10's digit and y is the 1's digit. From here, you can set up the following equations:

10x+y=3y+6

x+y=9

You can subtract x from both sides of the second equation, and substitute the y value into the upper equation like so:

10x+(9-x)=3(9-x)+6

10x+9-x=27-3x+6

Combining like terms:

12x=24

x=2

y=7

The number is 27.

Hope this helps!

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Pleas help!!!! Brainliest and points!!
andreev551 [17]

Answer:

Step-by-step explanation:

Hi!

Here is the formula for point slope form: y-y1=m(x-x1)

Our slope in this case is 5, and our points are (1, 9). 1(x1) and 9(y1)

So, if we substitute our given data into the formula, here is what we will get.

y-9=5(x-1)

Thus, our answer should be:

y-9=5(x-1)

I hope this helps!

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5 0
3 years ago
Read 2 more answers
What is 1/8-10(3/4-3/8x)+5/8x
cluponka [151]

Answer:

x = 59/35

Step-by-step explanation:

<u>Step 1:  Distribute</u>

1/8 - 10(3/4 - 3/8x) + 5/8x

1/8 - 30/4 + 30/8x + 5/8x

<u>Step 2:  Combine like terms</u>

1/8 - 30*2/4*2 - 30/8x + 5/8x

1/8 - 60/8 + 35/8x

-59/8 + 35/8x

<u>Step 3:  Solve for x</u>

-59/8 + 35/8x + 59/8 = 0 + 59/8

35/8x * 8/35 = 59/8 * 8/35

x = 59/35

Answer:  x = 59/35

4 0
3 years ago
What is the value of this expression?
Zepler [3.9K]

Answer:

-3

Step-by-step explanation:

Step 1: Solve (-2+(-1))^2/3 3

           1. -2+(-1) = -3

           2. (-3)^2 = 9

           3. 9/3 = 3

Step 2: Solve (-4)^2-17 -1

           1. 3/-1

Step 3: Simplify 3/-1 = -3. I hope this helped and please don't hesitate to reach out with more questions!

5 0
3 years ago
Can yall help me with this onee??
umka21 [38]

Answer:

Ok so it's been a minute since I've done this however the answer would be A I think.

  1. 3x+2y=3
  2. subtract 3x and put it behind 2y
  3. divide by 2 throughout the entire equation
  4. subtract 1 3/2 on both sides of the equation
  5. you should get y=0

8 0
3 years ago
20) If a quadratic equation cannot be factored then
PolarNik [594]

Answer:

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Step-by-step explanation:

I'm confused, what are you asking?

7 0
3 years ago
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