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
ahrayia [7]
3 years ago
13

Find the two-digit number which is 2 times the sum of its digits. Find a statement and number, please.

Mathematics
2 answers:
poizon [28]3 years ago
5 0
A two-digit number is twice the sum of its digit. If the tens digit is 7 less than the unit digit, find the number. 
Let x= the unit digit
Then y= the tens digit
<span>And 10y+x= the number 


</span>x+y= the sum of the digits 
<span>Now we are told that 10y+x=2(x+y) ------1st equation </span>
<span>We are also told that y=x-7 ----------- 2nd Equation </span>
<span>So our equations to solve are: </span>
(1) 10y+x=2(x+y)
<span>(2) y=x-7 
</span>

Hope it helps
dusya [7]3 years ago
4 0

Answer:

<em>2(x  + y) = 10x + y</em>

<em>the number is 18</em>

i hop this helps!

You might be interested in
Maya collected data about the number of ice cubes and milliliters of juice in several glasses of juice and organized the data in
Alex_Xolod [135]

Answer: B. 89

Step-by-step explanation:

-29.202x7= -204.414

-204.414+293.5= 89.086

So the answer is B. 89

5 0
3 years ago
A spinner is divided into 10 equal parts and numbered from 1 through 10. What is the probability of spinning a number less than
konstantin123 [22]

Answer:

7/10 * 1/2 = 7/20

Step-by-step explanation:

\frac{7}{10} * \frac{5}{10} \\\frac{7}{10} * \frac{1}{2} \\\frac{7}{20}

3 0
3 years ago
Write the product using exponents. 1/5 x 1/5 x 1/5 x 1/5 x 1/5
damaskus [11]

Answer: 1/5 with an exponent of 5.

hope this helps :)

7 0
3 years ago
Given that PQRS is a square, find x and y.
Dovator [93]
Every angle of a square equals 90 degrees.

2x - 4 = 90              3y + 6 = 90
2x = 90 + 4              3y = 90 - 6
2x = 94                    3y = 84
x = 94/2                     y = 84/3
x = 47                        y = 28

so x = 47 and y = 28
4 0
3 years ago
Read 2 more answers
Bill has two fat cats. He feeds each cat 150 grams of dry food each, twice a day. If he buys a 5 kilogram bag of dry food, about
Alinara [238K]

Answer: 4 days (I think)

Step-by-step explanation:

One cat = 150*2 = 300g

Two cats = 600g

600*2 = 1200 (this is the total amount of food they both eat in a day)

5kg = 5000g

1200g/5000g = 4.17

The bag will last 4 days.

6 0
2 years ago
Other questions:
  • At which price does quantity demanded equal quantity supplied?
    10·1 answer
  • Luanne made a photocopy of a drawing of a rectangle. The original drawing was 4.5 inches wide and 6 inches long. The copy was 6.
    15·1 answer
  • 100 POINTS
    8·2 answers
  • ]What is the third quartile (Q3) of the data set? 157, 77, 97, 97, 144, 136, 132, 152, 72 A. 157 B. 148 C. 132 D. 87
    6·2 answers
  • A cubic box is completely filled with 2,179 g of water. What is the length of one side of the box, in meters? m Explain your rea
    8·1 answer
  • What is the volume of a cylinder tank with diameter of 50cm and height of 80cm
    5·1 answer
  • Ryan sprinted 139 feet. How many yards did he sprint
    13·1 answer
  • Answer please I’m stuck
    10·1 answer
  • -(8m+4)=4m-2(6m+2) please
    13·2 answers
  • Bao can eat 12 chicken wings in 3 minutes. She eats the chicken wings at a constant rate.
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!