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
ValentinkaMS [17]
3 years ago
5

The sum of the digits of a two-digit

Mathematics
1 answer:
Ann [662]3 years ago
6 0

Answer:

45

Step-by-step explanation:

Let the unit place be ‘x'

Tenth place be y

The number is 10y+x

x+y = 9 (according to the condition) (1)

Digits are interchanged Unit place' y ‘& tenth place ‘ x'

New no is 10x +y

This is 9 more than the original number

10x+ y = 10y+x +9

10x-x+y-10y = 9

9x-9y= 9

x-y = 1 (dividing by 9) (2)

Adding the two equations

2x = 10

x= 5

Substituting the value of x in first equation

y = 4

The number is 45, the original number is 54 this is 9 more of the new number.

You might be interested in
Stanley is having wood flooring installed in his living room. The installer has used boxes of flooring on of the room. How many
Ray Of Light [21]
<h3>Total approximately 16 boxes of flooring will be needed in Stanley's living room. </h3>

Step-by-step explanation:

Here the given question is <u>incomplete</u>.

Stanley is having wood flooring installed in his living room. The installer has used 10 1/2 boxes of flooring on 2/3 of the room. How many total boxes of flooring will be needed for Stanley's living room?

The number of boxes used in the two third of room = 10 (\frac{1}{2} )   = 10.5 boxes

So, (\frac{2}{3} ) room  =   10. 5 boxes

So, 1 room  = 10.5 \times (\frac{3}{2} )  = 15.75 \approx 16

So, total approximately 16 boxes of flooring will be needed in Stanley's living room.

6 0
3 years ago
How to solve step by step -3(2x-3)&lt; 3 ?
likoan [24]
-3(2x-3)<3
(-3(2x-3))(-1)<3(-1)
3(2x-3)>-3
(3(2x-3))/3>-3/3
2x-3>-1
2x-3+3>-1+3
2x>2
2x/2>2/2
x>1

5 0
3 years ago
A waitress sold 12 ribeye steak dinners and 39 grilled salmon totaling $575.53 on a particular day. Another day she sold 25 ribe
Talja [164]

Answer:

cost of ribeye steak dinners = $10.36

cost of grilled salmon= $11.581

Step-by-step explanation:

Let the cost of one steak dinners be x

Let the cost of one  grilled salmon be y

One a particular day the waitress sells  12 ribeye steak dinners and 39 grilled salmon for a total is $575.53 which can be written in equation as

12(x)+39(y)= $575.53-------------------------------------(1)

On another day she sells  25 ribeye steak dinners and 13 grilled salmon dinners  totals to $582.43.This can be represented  as

25(x)+ 13(y)= $582.43-------------------------------------(2)

solving the equation (1) and (2)

eq(1) x 112x+39y= 575.53

eq(2) x 3125x+ 39y= 1747.29-------------------------(3)

Subtracting these equation we get,

113x=1171.76

x=\frac{1171.76}{113}

x= 10.36

Now  substituting this in equation (1)

12(10.36)+39(y)= $575.53

123.84+39y=575.53

39y=575.53 - 123.84

y=\frac{451.69}{39}

y=11.581

7 0
3 years ago
A cube has a volume of 125 cubic inches. What is the length of each edge?
Phantasy [73]

Answer:

1.95

Step-by-step explanation:

8 0
3 years ago
HELP ASAP WILL GIVE BRAINLIEST
SOVA2 [1]

Answer:

1 7/10

Step-by-step explanation:

First, you would convert the first mixed number into an improper fraction. In this case, it would be 17/4.

The next step would be to multiply the two fractions. To re elaborate, we would be multiplying 17/4 * 2/5. If you don't know how to do that, ask me.

The product is 34/20. It says to simplify the answer into a mixed number, so that would be 1 14/20, simplified to 1 7/10.

Hope this helps! :)

7 0
3 years ago
Other questions:
  • REAL SQUARE ROOTS OF 36/49
    8·2 answers
  • Solve the inequality and graph the solution 2|x+1/3|&lt;9
    15·1 answer
  • A box has a volume given by the trinomial x^3+4x^2-5x. What are possible dimensions of the box? Use factoring.
    6·1 answer
  • 2)
    14·2 answers
  • A rectangular prism has a length of 5.5 cm, a width of 10 cm, and a height of 3.5 cm.
    8·2 answers
  • Find the area of the composite figure in terms of the figure (use 3.14 for pi)​
    10·1 answer
  • Let f(x) =3x-3 and g(x) = 21<br>evaluate<br>(-25)(-1)​
    9·1 answer
  • What is the measure of angle 2​
    7·2 answers
  • HELP ME PLEASEEEEEEEEEEEEEEEEEEE
    11·1 answer
  • Can someone simplify the radical
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!