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
A cylindrical cattle water storage tank is 14 feet in diameter and 8 feet tall. About how many cubic feet of water is needed to
natka813 [3]

Answer:

0

Step-by-step explanation:

4 0
3 years ago
Explain why the product of a nonzero rational number and an irrational number is irrational
spayn [35]

Answer:

If you multiply any irrational number by the rational number zero, the result will be zero, which is rational. Any other situation, however, of a rational times an irrational will be irrational.

3 0
3 years ago
What percent of 95 is 74
Softa [21]
74 is what percent of 95?


74 is P% of 95


Equation: Y = P% * X


Solving our equation for P

P% = Y/X

P% = 74/95

p = 0.7789

Convert decimal to percent:

<span>P% = 0.7789 * 100 = 77.89%
</span>

Hope I helped!

Let me know if you need anything else!

~ Zoe
7 0
3 years ago
A group of 55 friends meets for lunch. They greet each other by exchanging fist bumps. How many fist bumps are exchanged if each
ANTONII [103]
55 * 54 = 2,970, hope this helps.
7 0
3 years ago
Read 2 more answers
Joshua invested $750 in an account paying an interest rate of
Maslowich
Due to the difference in the interest rate and the quarterly compounding, Joshua will have $212.24 more than Josiah.
Step-by-step explanation:
Giving the following information:
Joshua:
Initial investment (PV)= $750
Interest rate (i)= 0.0341/4= 0.008525
Number of periods (n)= 18*4= 72 quarters
Josiah:
Initial investment (PV)= $750
Interest rate (i)= 0.0285
Number of periods (n)= 18 years
To calculate the future value of each one, we need to use the following formula:
FV= PV*(1 + i)^n
Joshua:
FV= 750*(1.008525^72)
FV= $1,381.98
Josiah:
FV= 750*(1.0285^18)
FV= $1,169.74
Due to the difference in the interest rate and the quarterly compounding, Joshua will have $212.24 more than Josiah.
5 0
2 years ago
Other questions:
  • jalil play hockey. When jalil takes a shot on goal, the probability that he scores is 3/4. I jalil takes 80 shots on goal in a s
    14·1 answer
  • 9+3.5g=11-0.5g solve for g
    12·2 answers
  • Can anyone help me out
    10·1 answer
  • He bought a boat for 24000 in the year 2009. The value of the boat depreciated linearly. If the value of the boat in 2010 was 18
    15·1 answer
  • In need of major help right now..<br><br>(I answered B)
    7·2 answers
  • Given p(x) = 2x3 − 8x2 + 13x − 21, ___ is a factor because ___.
    8·1 answer
  • A box contains 84 chocolates, of which 63 are dark chocolates. The rest are milk chocolates. What is the ratio of milk chocolate
    13·2 answers
  • In your own words, how geometric seqences are related to exponetiol functions
    5·1 answer
  • Can someone help with these​
    7·1 answer
  • 30 POINTS please help I really need help :(((((((
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!