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
xeze [42]
3 years ago
12

The tens digit is three less than the units digit. If the digits are reversed, the sum of the reversed number and the original n

umber is 121. Find the original number.
help!!!!!
Mathematics
1 answer:
antoniya [11.8K]3 years ago
8 0

Answer: 47, 74

Step-by-step explanation:

Let x = units digit

x – 3 = tens digit

Then the number is 10(x – 3) + x and the reversed number is 10(x) + (x – 3)

Equation

The reversed number plus the original number equal 121.

10(x) + (x – 3) + 10(x – 3) + x = 154

10x + x – 3 + 10x -30 + x = 121

22x – 33 = 121

22x = 154

x = 7 (units digit)

x – 3 = 4 (tens digit)

Answer

The number is (4 X 10) +7 or 47.

You might be interested in
Answer plz!<br> Which choices are equivalent to the quotient below? Check all that apply.
Reika [66]
E and C are correct. Although E is the simplified answer
7 0
3 years ago
Read 2 more answers
How does the volume of a cylinder change if the radius is quadrupled and the height is reduced to a third of its original size?
Liula [17]
Oh yay, proportional thinking! (Vicious sarcasm). Alright, let's do this:

Volume of the cylinder = <span>π(h)r^2
New volume = </span><span>π(h/3)(4r)^2
= (1/3)</span><span>π(h)(16r^2)
=16*(1/3)</span><span>π(h)r^2
=(16/3)</span><span>π(h)r^2

Therefore, it's D. Though it's spelled pi, and you should really use the ^ symbol. </span>
8 0
3 years ago
Read 2 more answers
The area of a triangle is (x^3-5x^2+3x-15) and the width of the triangle is (x^2-3). If area = length x width, what is the lengt
finlep [7]
The answer is b. x+15
6 0
3 years ago
360 increased by 20% decreased by 50
castortr0y [4]
370

20%= 0.2

0.2(360)=72

360+72=432

432-50=382
8 0
4 years ago
No clue what to do. show all steps too please. thanks. HELP DUE NOW!!!
dangina [55]
An isosceles triangle has two equal sides.
a= one equal side
b=base

b+2a=35
a=b+4
b+ 2(b+4)=35
b+2b+8=35
3b+8=35
3b=27
b=9
a=13
4 0
3 years ago
Other questions:
  • The table shows the average number of pounds of trash generated per person per day in the United States from 1970 to 2010. Use t
    7·2 answers
  • What expressions are equivalent to q+p+q+p+q
    8·1 answer
  • Math question down below
    14·1 answer
  • What is the area of this figure enter your answer in the box
    5·1 answer
  • Can someone find the sum??
    10·2 answers
  • Viven M||N find the value of X
    12·1 answer
  • How do you even do this???
    7·1 answer
  • What is 0.2604166 simplified??
    5·2 answers
  • Need help fast. Will give brainly
    13·1 answer
  • The two non-parallel sides of an isosceles trapezoid are each 7 feet long. The longer of the two bases measures 22 feet long. Th
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!