1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Hitman42 [59]
3 years ago
12

The digits of a two-digit number sum to 8. When the digits are reversed, the resulting number is 18 less than the original numbe

r. What is the original number?
Mathematics
2 answers:
kumpel [21]3 years ago
8 0

Answer:

53

Step-by-step explanation:

 Let x = the first digit

and y = the second digit. Then,

    xy = the number

We have two conditions:

(1) x + y = 8

(2) 10y + x = 10x + y - 18

Simplify (2)                     10y + x - 10x - y = -18

                                              (3) 9y - 9x  = -18

Multiply Equation (1) by 9     (4) 9x + 9y =  72

Add Equations (3) and (4)                18y =  54

Divide each side by 18         (5)           y =    3

Substitute (5) into (1)                       x + 3 =   8

Subtract 3 from each side                   x =   5

x = 5 and y = 3

The number is 53.

Check:

(1) 5 + 3 = 8     (2) 10×3 + 5 = 10×5 + 3 - 18

         8 = 8             30  + 5 =   50  + 3 - 18

                                      35 =       53    - 18

                                      35 =            35

xxMikexx [17]3 years ago
5 0

Answer:

53 add the 2 and you get 8

Step-by-step explanation:flip them 35 + 18 =53

You might be interested in
3. Solve 2log4y - log4 (5y - 12) = 1/2<br>​
Ilia_Sergeevich [38]

Answer:

y =  4  or y = 6

Step-by-step explanation:

2log4y - log4 (5y - 12) = 1/2

​2log_4(y) - log_4(5y-12) = log_4(2)           apply law of logarithms

log_4(y^2) + log_4(1/(5y-12)) = log_4(/2)    apply law of logarithms

log_4(y^2/(5y-12)) = log_4(2)                     remove logarithm

y^2/(5y-12) = 2                                            cross multiply

y^2 = 10y-24                                                  rearrange and factor

y^2 - 10y + 24 = 0

(y-4)(y-6) = 0

y= 4 or y=6

4 0
3 years ago
Someone help please i am so bad at point slope stuff
Fynjy0 [20]
<span>1) Write the point-slope form of the equation of the horizontal line that passes through the point (2, 1). y = 1/2x

2)Write the point-slope form of the equation of the line that passes through the points (6, -9) and (7, 1). 
m = (-9 - 1) / (6 - 7) = -10/-1 = 10
y + 9 = 10 (x - 6)
y = 10x - 69

3) A line passes through the point (-6, 6) and (-6, 2). In two or more complete sentences, explain why it is not possible to write the equation of the given line in the traditional version of the point-slope form of a line. 

4)Write the point-slope form of the equation of the line that passes through the points (-3, 5) and (-1, 4).
m = (5 - 4) / (-3 - -1) = 1/-2
y - 5 = (-1/2) (x +3)
y = (-1/2)x + 7/2

5) Write the point-slope form of the equation of the line that passes through the points (6, 6) and (-6, 1).
m = (6-1)/(6 - -6) = 5 / 12
y - 6 = (5/12) (x-6)
y = (5/12)x + 17 / 2

6) Write the point-slope form of the equation of the line that passes through the points (-8, 2) and (1, -4).
m = (2 - -4)  / (-8 -1) = 6 / -7
y - 2 = (-6/7) (x + 8)
y = (-6/7)x - 50 / 7


7) Write the point-slope form of the equation of the line that passes through the points (5, -9) and (-6, 1).
m = (-9 - 1) / (5 - -6) = -10 / 11
y + 9 = (-10 / 11) (x - 5)
y = (-10 / 11)x -49/11

</span>
3 0
4 years ago
What is 150/100 in decimal form and percent form
Andrews [41]
Decimal : 1.5
Percent : 150%
3 0
3 years ago
PLS HELP
Anna007 [38]

he spends 9.6 hours sleeping each day! plz mark me the brainliest!

4 0
3 years ago
Read 2 more answers
What is the value of x in the equation x + 10 = 13?
ValentinkaMS [17]
The answer is x=3 Your Welcome!
7 0
3 years ago
Read 2 more answers
Other questions:
  • Patrick is constructing the circumscribed circle for △RST.
    9·2 answers
  • Please help with this question.
    13·1 answer
  • A washer and a dryer cost $795 combined. The washer costs $55 less than the dryer. What is the cost of the dryer?
    10·2 answers
  • In the given figure if ab=bc and bx=by
    13·1 answer
  • Which equivalent equation is the result of combining like terms in the given equation? 2r + 55 = 6r + 7 – 2r
    10·1 answer
  • Consider the functions:
    13·1 answer
  • A recipe calls for 2 and 2/3 cups of flour. Terell wants to make 3/4 of the recipe
    8·1 answer
  • Help please.........
    10·2 answers
  • Q. Mohammed calculated the volume of the prism as 240 cm3. Is he correct? *<br> a- yes <br> b- no
    13·2 answers
  • I don’t get this someone answer this for me please show all work
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!