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
Tom [10]
3 years ago
13

Daca adun sfertul lui a cu jumatatea lui b si cu treimea lui c, obtin 120. Stiind ca jumatatea lui b este cu 24 mai mare decat s

fertul lui a si de 4 ori mai mare decat treimea lui c, afla cele 3 numere si suma acestora. Ajutor, va rog!
Mathematics
1 answer:
schepotkina [342]3 years ago
6 0

Answer:

Step-by-step explanation:

Dacă adaug un sfert de la jumătate de b și o treime de c, obțin 120.

Aceasta se exprimă ca:

1 / 4a + 1/2 b + 1 / 3c = 120 ..... Ecuația 1

Știind că jumătate din b este de 24 de ori mai mare decât un sfert de a

1 / 2b = (1/4 × a) 24

b / 2 = (a / 4) 24

b / 2 = 6a

Cross Multiply

b = 6a × 2

b = 12a

a = b / 12

Jumătate din b este de 4 ori mai mare decât o treime din c

1/2 × b = 4 × (1/3 × c)

b / 2 = 4 (c / 3)

b / 2 = 4c / 3

Cross Multiply

b = 2 × 4c / 3

b = 8c / 3

8c = 3b

c = 3b/8

1 / 4a + 1/2 b + 1 / 3c = 120 ..... Ecuația 1

Înlocuim

1/4 × b / 12 + 1 / 2b + 1/3 × 3b / 8= 120

b / 48 + b / 2 + b/8 = 120

Înmulțiți cu 48

b/48 × 48 + b/2 × 48 + b/8× 48 = 120 × 48

b + 24b + 6b = 5760

31b = 5760

You might be interested in
25/75 +25/125 write in the lowest terms
SpyIntel [72]
To exact form:

8/15

To decimal form:

0.53¬ repeating.

7 0
2 years ago
Read 2 more answers
The coordinates of which point are (–3, –6)? On a coordinate plane, point A is (negative 3, 6), point B is (negative 6, negative
julia-pushkina [17]

Answer:

Point c

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
Which any quality represents the statement the sum of -3 and a number is at least 5
Artyom0805 [142]
5 is less than or equal to -3+x
5 0
2 years ago
Sarah starts with $375 in her savings account. After getting a part-time job, she deposits $90 every week. Write an equation sho
Valentin [98]

Answer:

y = 375 + 90x is the equation

4 0
3 years ago
The value of the computer is given by the expression 2000 + (200t) where t is the time in years
OLEGan [10]
If it was one year it would be 2200 and you just keep adding 200 for each year.
4 0
3 years ago
Other questions:
  • A bag contains white marables and red marables,126 in total.the number of white marables is 6 more than 5 times the number of re
    7·1 answer
  • 0.3,3,30,300 what r the next three numbers? How much are they going up in each time
    13·1 answer
  • In 1945​, an organization asked 1490 randomly sampled American​ citizens, "Do you think we can develop a way to protect ourselve
    11·1 answer
  • 84,000 of food for 80 soldiers for 60 days How long would the food last 20 more soldiers joined​
    6·1 answer
  • 4 5/2 - 4 3/2 <br><br> ANSWER WITH EXPLANATION. BRAINLIST!!!!!
    14·1 answer
  • If an arithmetic sequence
    13·1 answer
  • If a = 3 and b = 2, what is the value of the expression a ⋅ b.
    12·1 answer
  • From a point on a circle, two perpendicular chords are drawn. One is 6 cm from the center and the other is 3 cm from the center.
    6·1 answer
  • 4. Tom rides his bike a total of 6 14 miles to work over the course of 5 days.
    14·1 answer
  • 40 POINTS!!!!
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!