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
Romashka-Z-Leto [24]
3 years ago
9

The sum of the two digits of a number is 16. The number formed by reversing the digits is 18 more than the original number. Dete

rmine the original number. Let t = the tens digit, u = the units digit, and u + t = 16. Which of the following equations would complete the system? 9t - 9u = 18 9u - 9t = 18 tu = ut + 18
Mathematics
1 answer:
nydimaria [60]3 years ago
5 0
9u-9t=18

original no. is 10t+u
reversed no. is 10u+t

so its (10u+t)-(10t+u)=18
which gives 9u-9t=18
You might be interested in
According to the rational root theorem, the
nydimaria [60]

Answer:

Step-by-step explanation:

Sorry this is a tough one and I don’t want to give you the wrong answers sorry again

6 0
3 years ago
Read 2 more answers
Swimming Pool On a certain hot summer's day, 366 people used the public swimming pool. The
MatroZZZ [7]

Answer:

c=__ and a=__

Step-by-step explanation:

767.50=1.25(c)+2.25(a).

366=c+a

normally from here, I would just guess the number of adults and children. It does take a while doing it that way, but maybe you know a quicker way. Hope this helps :)

7 0
2 years ago
X=3n-18 the measure of Y=2n-27
Papessa [141]
I hope this helps you
Good luck

7 0
3 years ago
Read 2 more answers
In winter, the price of apples suddenly went up by$0.75 per pound. Sam bought 3 pounds of apples at the new price for a total of
White raven [17]

From the information given, the original price per pound was increased by $ 0.75
Let the original price be x, so the new price is x + 0.75

Sam bought 3 pounds of apples at new price and it cost him 5.88

so we form an equation:

3 (x + 0.75) = 5.88

3x + 2.25 = 5.88

3x = 5.88 - 2.25

3x = 3.63

x = 3.63 / 3

x = 1.21

Therefore the original price per pound is 1.21 dollars


4 0
3 years ago
Read 2 more answers
Given: △ABC; AB=BC, m∠BDA = 60°, BD=4 cm, BD ⊥ BA . Find: DC, AC.
vekshin1

Answer:

DC = 10.93 cm ,  AC = 9.8 cm

Step-by-step explanation:

From trigonometry;

⇒ Tan 60 = AB/BD

⇒AB = BD Tan 60 ( where BD = 4 cm )

⇒ AB = 6.93 cm

Also, AB=BC , therefore;

⇒ BC = 6.93 cm

⇒ Cos 60 = BD/AD

⇒ AD = BD/ Cos 60 = 4/Cos 60

⇒ AD = 8 cm

From Pythagoras theorem;

⇒ AC^{2} = AB^{2} + BC^{2} = (6.93)^{2} + (6.93)^{2}

⇒ AC = \sqrt{96.05} = 9.80 cm

⇒ DC = BD + BC = 4 + 6.93

⇒ DC = 10.93 cm

8 0
3 years ago
Other questions:
  • Please help with this question
    8·2 answers
  • F is between E and G. FE = 1/3 FG and EG = 24. find FG
    15·1 answer
  • A standard I.Q. test produces normally distributed results with a mean of 104 and a standard deviation of 16 for 52,000 students
    13·2 answers
  • Last week you worked 24 hours, and earned $240.
    14·2 answers
  • Solve the compound - 20 ≤ 2x - 20 ≤ 10​
    9·1 answer
  • Captain Sullivan decides to plant a decoy treasure at 5 1/2, -2 3/4. Plot this point on the Coordinate Grid. Explain how you fou
    9·1 answer
  • Whoever answers correctly gets brainlist!
    6·1 answer
  • The hands of a clock form a 150° angle. What time could it be? A = 4:00 B = 5:00 C = 9:00 D = 10:00
    11·2 answers
  • A university has 39,930 students. in a random sample of 270 students, 18 speak three or more languages. predict the number of st
    10·1 answer
  • Which of the following numbers is the smallest?<br> 1/3<br> 3/10<br> 2/5<br> 3/8
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!