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 sfertul lui a si de 4 ori mai mare decat treimea lui c, afla cele 3 numere si suma acestora. Ajutor, va rog!

Answers

Answer 1

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


Related Questions

Please help! I'll give brainlist!!!

Answers

Answer:

C

Step-by-step explanation:

3/4+(-1/8) which is 3/4-1/8. 6/8-1/8 which is 5/8 or option C.

Hope this helps please mark brainliest :D

pls give the answer​

Answers

Answer:

It should be 245 m

Step-by-step explanation:

Separate it like this:

chop of the rectangle part and find the area of that and then add it to the trapezoid part

10*20 = 200.

Area of a trapezoid = 5+10/2 *6.

5+10 = 15. 1

5/2 = 7.5.  

7.5*6 = 45.

45 + 200 = 245

please help and answer......

Answers

Answer:

C not like terms

Step-by-step explanation:

Answer:

the answer is LIKE TERMS because 10 doesnt have a variable of y

Step-by-step explanation: Brainliest please.

Which of the following quantities are directly proportional? Amount of candy you can buy and the price if the amount of money you spend is constant.

Answers

Answer:

Not directly proportional

Oh and can you give me brainliest

Jordan will deposit $14,000 in an account that pays 3% simple interest yearly for 10 years. What will be Jordan's total balance after 10 years?

Answers

Answer:4200

Step-by-step explanation:

What are the answers for a and B ?

Answers

Answer:

Step-by-step explanation:

What is the first step in solving the system by the substitution method?
x + 2y = 8
3x - 4y = 4
19
O Subtract 2y from cach side of x + 2y = 8
O Add x + 2y = 8 to 3x - 4y = 4
O Multiply x + 2y = 8 by-3
O Set x + 2y equal to 3x - 4y = 4

Answers

i think it’s multiply x+2y= by -3

a force of 10 newtons act in a direction 75 above horizontal moving an object 15 meters from (0,0) to (15,0). What is the work done by the force?
A. 2.59 joules
B. 3.88 joules
C. 38.82 joules
D. 150.00 joules

Answers

Answer:

C

Step-by-step explanation:

i think

The required work done is 38.82 joules.

Work done to be determine for force of 10 newton on angle of 75° for 15 meters.

What is work done?

Work done is define as the force required to move an object by some displacement.

Here, work done = force x displacement x cosФ
                          =  10 x 15 x cos75°
                          =   150 x 0.25

                           = 38.82 joules

Thus, the required work done is 38.82 joules.

Learn more about work done here:
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What is the slope intercept form of the equation 4x-8y=72

Answers

Answer:

y = 1/2x - 9

General Formulas and Concepts:

Alg I

Standard Form: Ax + By = C

Slope-Intercept Form: y = mx + b

m - slope b - y-intercept

Step-by-step explanation:

Step 1: Define

Standard Form: 4x - 8y = 72

Step 2: Find slope-intercept form

Subtract 4x on both sides:          -8y = 72 - 4xDivide both sides by -8:               y = -9 + 1/2xRewrite:                                         y = 1/2x - 9

HELP PLEASE QUICK multiple choice.
What is the solution set of the equation?

7w2=1183

{−28,561, 28,561}

{−13, 13}

{−91, 91}

{−169, 169}

Answers

Answer:

{-13, 13}

Step-by-step explanation:

Isolate the variable by dividing each side by factors that don't contain the variable.

{−13, 13}

Answer:

Solution given:

7w²=1183

w²=1183/7

w=√(169)

w=±13

4(2x - 3) = 8x – 12
Solve for the following equation

Answers

Answer:

8x-12=8x-12

Step-by-step explanation:

they are the same

Who knows how to do this diagonals topic

Answers

Answer:

12

Step-by-step explanation:

If the line GE is the bisector of FH then lines FJ and JH are congruent or the same size. this means that JH would equal 12 as well

The orange shape is a dilation of the black shape. What is the scale factor of the dilation?
1018
х
-10
0
10
-10
Simplify your answer and write it as a fraction or whole number.

Answers

Answer:1/2

Step-by-step explanation:

solve the equation
2+ x/-10 = 2/5
a: -16
b: -24
c: 16
d: 24​

Answers

Answer:

x = 16

Step-by-step explanation:

2+ x/-10 = 2/5

2 - 2 + -1/10x = 2/5 - 2

(10/-1) -1/10x = -8/5 (10/-1)

x = 16

Answer:

gddhdbjdbewb

Step-by-step explanation:

decnsnx wjdeni

Daniel's store sells basketball jerseys with the logos of each of the five local junior high teams. Daniel has 6000 jerseys in stock, divided among the five schools as shown. Complete the table to show how many of each school's jersey Daniel has in stock.

pls awnser its for a test

Answers

Answer:

2=3408493-=2=9

Step-by-step explanation:

help needed


Oliver is using plywood to build the skateboard ramp shown. Three sides of the ramp are rectangles.

How many square feet of plywood does Oliver need to build the ramp?


help atleast tell me how to solve it or just give me the answer !

Answers

Yeeeeeeeeeeeep aight.

Write each percent as a fraction in simplest form. 16%


PLEASE CAN YOU ANSWER THIS? AND IF YOU CAN PLEASEEEEEEEEEE EXPLAIN HOW YOU GOT IT, THANKS!

Answers

Answer:

[tex]\frac{4}{25}[/tex]

Step-by-step explanation:

16% is equal to [tex]\frac{16}{100}[/tex]

[tex]\frac{16}{100}[/tex] can be simplified by dividing by 2, giving you [tex]\frac{8}{50}[/tex], which can be divided by 2 again, giving you [tex]\frac{4}{25}[/tex].

[tex]\frac{4}{25}[/tex] can't be simplified again.

Answer:

16% = 4/25

Step-by-step explanation:

First, turn the percentage (16%) into a fraction with 100 in the denominator:

16% = 16/100

Now, you just need to simplify 16/100:

16/100

= 4/25

Both sides were divided by 4 to get the most simplified answer because 4 is the greatest common factor of 16 and 100.

Which answer choice shows 15.067 rounded to the nearest hundredth?
A. 15.07
B. 15.06
C. 15.1
D. 15.0

Answers

A. 15.07 you’re welcome!

i need (−5)×(2)×(−0.5)​

Answers

Answer:

5

Step-by-step explanation:

(−5)×(2)×(−0.5)=5

Sandra hikes 9/10 mile every 30 minutes,or 1/2 hour. How many miles does she hike each hour?​

Answers

9514 1404 393

Answer:

  1.8 miles

Step-by-step explanation:

In the first half hour, Sandra hikes 9/10 = 0.9 miles. She hikes that distance again in the second half-hour. After an hour, Sandra has hiked ...

  2 × 0.9 miles = 1.8 miles

__

If you like, you can consider it a "unit rate" problem. To find miles per hour, divide miles by hours:

  (9/10 mi)/(1/2 h) = (9/10)(2/1) mi/h = 9/5 mi/h = 1.8 mi/h

Sandra hikes 9/5 or 1.8 miles in an hour.

Write the word sentence as an inequality. Then solve the inequality. Six times a number x is at least −24.

Answers

6x≥-24 is the inequality of sentence Six times a number x is at least −24 and x≥-4 is the solution of inequality.

What is Inequality?

A relationship between two expressions or values that are not equal to each other is called 'inequality.

The given sentence is  Six times a number x is at least −24.

Whenever there is a word times means it is a product.

Atleast means greater than or equal to.

Let x be the number in inequality.

Six times a number x is 6x.

Six times a number x is atleast −24.

6x≥-24

6x≥-24 is the required inequality

Divide both sides by 6

x≥-4

Hence, 6x≥-24 is the inequality of sentence Six times a number x is at least −24 and x≥-4 is the solution of inequality.

To learn more on Inequalities click:

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What is that rate of change for the equation y=2x+60?​

Answers

Answer:

2

Step-by-step explanation:

the rate of change is basically the slope. In this equation the coefficient of x is the slope. The coefficient of x is 2. So 2 is your slope

i’m pretty sure the rate of change is 2

S= CB-7, for C.
What is the Answer to this?

Answers

Answer:

C = (S + 7) / B

Step-by-step explanation:

S = CB - 7

S + 7 = CB

C = (S + 7) / B

Hope this helps!

Find the lateral surface area of the
following prism:
5 cm
5 cm
5 cm
5 cm
10 cm
5 cm
apothem = 3.6 cm
LSA = [ ? ] cm2

Answers

9514 1404 393

Answer:

  250 cm²

Step-by-step explanation:

The lateral area is the total area of the 5 rectangular faces. Each is ...

  A = LW = (10 cm)(5 cm) = 50 cm²

The lateral surface area is ...

  LSA = 5 × 50 cm² = 250 cm²

The slope of line r = 5 and the slope of line s = -5. Are the lines parallel, perpendicular or neither?

Answers

Answer:

Neither, if they are parallel they slope would be the same, and if they were perpendicular one of the slopes would be -1/5 so I am pretty sure it is neither. (I also graphed it and it didn't look perpendicular or parallel)

Step-by-step explanation:

(-2,4) ,(3,-6) point slope form

Answers

Y= -2x for the slope intercept form

Write an expression equivalent to (6x + 4y) – 2y by combining like terms.

Answers

Answer: 6x + 2y

Step-by-step explanation:

find area and perimeter

pls show work

Answers

Step-by-step explanation:

ok so first you can split the object into 2 different shapes like the first picture.

next you can start with shape labeled 1

and the perimeter of that would be 5+5+4+4 =14

so the perimeter is shape 1 is 14

the area would be5×4 which is 20

now shape 2 the perimeter of that would be 8+8+2+2 which is 20

the area would be 8×2 which would be 16

so then you add the are and perimeter of each shape together

p= 14+20=34

a= 20+16= 36

Identify the property on this equation 4x + 3 = 3 + 4x

Answers

Answer:Infintely many

Step-by-step explanation:

Step 1:4x+3=3+4x. Subract 3 from both sides

Step: 4x=4x. Because 4x=4x,if it was 3x=4x it would be no solution.

Answer: Commutative Property of Addition

The general rule for this is a+b = b+a

We can add any two numbers in any order we want.

Example: Since 2+3 = 5 and 3+2 = 5, we know 2+3 = 3+2

Yesterday, Janie walked 35 mile to a friend's house, 14 mile to the store, and 38 mile to another friend's house. Which is the best estimate of the distance Janie walked?

Answers

The best estimate Janie walked is 87mile.

Answer:

1 1/4 miles

Step-by-step explanation:

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