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
Viefleur [7K]
3 years ago
12

The sum of the digits of a two-digit number is 12. the number formed by interchanging the digits is 54 more than the original nu

mber. what is the original number?
Mathematics
1 answer:
Grace [21]3 years ago
4 0
The number is xy
x+y=12

10y+x=54+10x+y

so

x+y=12
minus x both sides
y=12-x
sub that for y

10(12-x)+x=54+10x+(12-x)
120-10x+x=54+10x+12-x
120-9x=66+9x
add 9x both sides
120=66+18x
minus 66 both sides
54=18x
divide both sides by 18
3=x

sub back
y=12-x
y=12-3
y=9

the number is 39
You might be interested in
Is 1.65 greather than 16.5
Bas_tet [7]

Answer:

No

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
-1(t+8)=-7.1 solve for t
Darina [25.2K]

Answer:

t = -0.9

Step-by-step explanation:

-1(t+8) = -7.1

(t+8) = 7.1

t = -0.9

7 0
3 years ago
Read 2 more answers
Can anyone help me with 2 and 3
Ede4ka [16]
2: 14+15d+9c
3: a.
ignore this I need 20 characters.:)))
3 0
3 years ago
Five friends are going bowling two of the rent shoes at three dollars per pair the group spent $15 at the snack bar the total co
Vedmedyk [2.9K]
66-(3*2)
 60/5= 11
so 11$ for the three who didn't rent shoes and the two who did spent  14 each
8 0
3 years ago
Which inequalities are true? Select the four correct answers.
tiny-mole [99]

The correct anwer is option C and option E which are √4<√5<√√55 and √8<2.9<√√9.

<h3>What is inequality?</h3>

Inequality is the relationship between two expressions that are not equal, employing a sign such as ≠ “not equal to,” > “greater than,” or < “less than.”.

The two inequalities √4<√5<√√55 and √8<2.9<√√9. are true.

√4<√5<√√55  → 2 < 2.23 < 7.41

√8<2.9<√√9    → 2.82 < 2.9 < 3

Therefore correct answers is option C and option E which are √4<√5<√√55 and √8<2.9<√√9.

To know more about inequality follow

brainly.com/question/24372553

#SPJ1

6 0
2 years ago
Other questions:
  • PLEASE HELP ASAP!!<br> a. 2/9<br> b. 1/3<br> c. 1/9<br> d. 2/81
    6·1 answer
  • 2x(8+7)-6/2x(9-3) evaluate
    15·2 answers
  • Which of the following best describes algebraic expression 10 X +2
    8·1 answer
  • Can someone pls help
    11·2 answers
  • Which statement below is not true about plant cells.
    7·2 answers
  • What is the area of the triangle?
    7·2 answers
  • 17. Reasoning The interest rate on a credit
    12·1 answer
  • 3 lines are shown. A line with points M, H, K intersects a line with points J, H, L at point H. A line extends from point H to p
    15·1 answer
  • Can someone help.
    15·1 answer
  • Evaluate. Write your answer as an integer or as a decimal rounded to the nearest hundredth. tan 26° = ___
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!