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
The receipt shows the prices of goods that Robert bought at the store.
Vladimir79 [104]

Answer:

4%

Step-by-step explanation : by subtracting the 8 by 4

5 0
3 years ago
1) Population mean<br>2 +3+6+8+11<br>​
dolphi86 [110]

Answer:

30..? sorry im not quite sure what youre asking

5 0
3 years ago
Read 2 more answers
A circular coaster has a diameter of 5 inches. What is its area? write your answer using π.
Verizon [17]

Answer:

Step-by-step explanation:

Diameter=5 inches

Area= πr^{2}

<u>r is the radius of coaster.</u>

<u>Radius=diameter/2</u>

Substitute the value of D:

r=5/2

Now

Area=π \frac{5}{2} ^{2}

Area=π(\frac{25}{2})

Area=12.5π sq.inches

<h3><u>If you need to ask any questions, please let me know.</u></h3>
4 0
2 years ago
Find the surface area of a rectangular prism that is 16 inches long, 12 inches wide, and 5 inches high.
liubo4ka [24]
You have to times all the numbers together to get the surface area.
So that means you have to do 16*12*5.
4 0
3 years ago
Read 2 more answers
What is the measure of the central angle.
Nana76 [90]

Answer:

35*

Step-by-step explanation:

IT IS THE SAME ANGLE

3 0
3 years ago
Read 2 more answers
Other questions:
  • What is the standard form?
    12·1 answer
  • A functionf(x) is graphed on the coordinate plane.
    11·2 answers
  • Find the Area And Perimeter
    8·2 answers
  • Question 7 of 12<br> 64 =<br> O A. 9<br> OB. 7<br> C. 8<br> O D. 16<br> Pleaseee
    5·2 answers
  • Help me please! will mark brainliest if correct :)
    8·1 answer
  • Get this right and you get brainliest
    8·1 answer
  • Match each equation with a value of x that satisfies it
    12·1 answer
  • What is the distance between points M(-3, 1)and N(7, -3)​
    15·1 answer
  • MY LAST QUESTION<br><br> help me pleaseee<br><br> thankss
    15·2 answers
  • The perimeter of an equilateral triangle with side length s is 3s. Leslie is using a wooden equilateral triangle with 15-inch si
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!