Soit trois nombres consécutifs. Lorsque l’on soustrait le double du deuxième nombre du quadruple du
premier nombre on obtient le triple du troisième nombre moins 15. Détermine quels sont ces nombres.

Answers

Answer 1

Answer:

Les trois nombres sont 5, 6 et 7.

Step-by-step explanation:

Soit x le premier nombre.

x + 1 sera le second et x + 2 sera le troisième.

On pose l'équation :

2x + 3(x + 1) = 4(x + 2)

2x + 3x + 3 = 4x + 8

5x - 4x = 8 - 3

x = 5


Related Questions

ASAP
-WILL MARK BRIANiST

Answers

Answer:

5/18

Step-by-step explanation:

(5/6)/3

5/6 X 1/3

5/18

a: 5/12

5/6 x 1/2 = 5/12

if an instrument measures in units of 1 then any value between which two values would be measure as 5?

a) 3.5 and 6.5
b) 4 and 6
c) 4.5 and 5.5
d) 5 and 6

Answers

Did you get the answer yet?

nswer the next two que
A particle travels across a detector, following a path given by:
9x - 4y + 2 = 0
The slope of the graph of this line, to two decimals, is

Answers

Answer: 639

Step-by-step explanation:

Multiple

help, will mark brainliest!! and give 5 stars this is due 2day!!

Answers

11. brother = ???  

???- 12 = 14

14+12=26

brother is 26.

12. 21.35 - 8.95 = 12.4

cost of colored pencils = $12.40

13. 37- 8 = 29

14. $95  - $73 = $22

Explain why this comparison is either reasonable or not reasonable. 2.5 = 2.05

Answers

Answer:

No, this comparison is not reasonable.

Step-by-step explanation:

This is the comparison given,

[tex]2.5 = 2.05[/tex]

Now,

[tex]2.5 = 2.50[/tex]

We know that,

[tex]2 .50 > 2.05[/tex]

So,

[tex]2.50 ≠ 2.05 \\ •°• \: 2.5 ≠ 2.05[/tex]

Hence, the comparison is not reasonable.


Two apples cost 60 cents. How much do five cost?
cost?​

Answers

Answer:

5 apples cost = 150 /-

Step-by-step explanation:

Two apples cost = 60 /-

Then 1 apple cost = 60 ÷ 2

= 30

∴ 1 apple cost = 30 /-

Then 5 apples cost = 30 × 5

= 150

∴ 5 apples cost = 150 /-

Hope it is helpful....

Help......................

Answers

Answer:

mean: 68.95 (69 rounded up)

median: 69.5

range: 11

Step-by-step explanation:

Answer: Mean is 69

               Median is 69

              Range is 11

           

             

Step-by-step explanation:

Mean is 69 because the is 68.95 and I rounded it    

In ΔMNO, n = 78 cm, o = 14 cm and ∠M=12°. Find the length of m, to the nearest centimeter

Answers

Answer:

64

Step-by-step explanation:

i calculated using https://www.calculator.net/triangle-calculator.html :/

Answer:

[tex]m=64[/tex]

Step-by-step explanation:

[tex]m^2=n^2+0^2-2n~0~ co~12[/tex]

[tex]= 78^2+14^2-2*78*14~co ~12[/tex]

m= [tex]\sqrt{78^2+14^2-28*78 ~co~12}[/tex]

[tex]m=64[/tex]

---------------------------

hope it helps....

have a great day!!

SHOW how to use vertical addition to add 5x^2 - 9x - 8 + (3x -6 + 2x^2) DO NOT SOLVE

Answers

Answer:

okay

Step-by-step explanation:

ons
1
Nos
y= X+3
y= X+3
How many solutions

Answers

Infinitely many solutions because the lines are the same

hello please help i’ll give brainliest

Answers

Answer:

b. option Is the correct answer

A bag contains 5 black marbles, 7 blue marbles, 3 green marbles, 4 red marbles, and 1 white marble. A marble is selected and then replaced and a second marble is chosen. What is the probability of selecting a black marble and then a red marble?

Answers

Answer:

2/25

Step-by-step explanation:

It will be 20/400 + 12/400

=2/25

Answer:

2/25

Step-by-step explanation:

(4pq+3q)² - (4pq - 3q)²​

Answers

Answer:

48pq².

Step-by-step explanation:

(4pq+3q)² - (4pq - 3q)²​

This is the difference of 2 squares so we can use the identity

a^2 - b^2 = (a - b)(a + b):

(4pq+3q)² - (4pq - 3q)²​

= (4pq + 3q - (4pq - 3q)(4pq + 3q + (4pq - 3q)

= (4pq + 3q - 4pq + 3q)(4pq + 3q + 4pq - 3q)

= 6q * 8pq

= 48pq².

Answer:

48pq²

Step-by-step explanation:

As we know,

(a + b)² = a² + 2ab + b²

and

(a – b)² = a² – 2ab + b²

So,

(4pq+3q)² - (4pq - 3q)²​

= [(4pq)² + 2 X 4pq² X 3q + (3q)²] – [(4pq)² -  2 X 4pq² X 3q + (3q)²]

= (16p²q² + 24pq²+ 9q²) – (16p²q² – 24pq²+ 9q²)

= 16p²q²+ 24pq²+ 9q² – 16p²q²+ 24pq² – 9q²

= 24pq² + 24pq²

= 48pq²

I will mark as brillianest...plzz solve the question.

Factorize:
1) 6x²+x-2

Answers

Answer:

( 2 − 1 ) ( 3 + 2 )

Step-by-step explanation:

6 ² + − 2

6x² + 4 - 3 -2

2 ( 3 + 2 )− 1 ( 3 +2 )

( 2 − 1 ) ( 3 + 2 )

Need help on this! Maybe be marked brainliest? :)

Answers

Answer:

3 1/4 hours

Step-by-step explanation:

1 hour + 1/4 hour + 3/4 hours = 2 hours

3/4 hour + 2/4 hour = 1 1/4 hours

2 hours + 1 1/4 hours = 3 1/4 hours

PLZ HELP I BEGG. NEEDDD

Answers

Answer:

192

Step-by-step explanation:

Volume of triangular prism = area of base * length

The base of the triangular prism is a triangle

The area of a triangle can be calculated by multiplying the base length by the height and dividing that by 2

The base has a base length of 4m and a height of 8m

So area of base = [tex]\frac{4*8}{2}[/tex]

4 * 8 = 32

32 / 2 = 16

So the area of the base is 16m²

The prism has a length of 12m and we have identified that the area of the base is 16 so volume = 12 * 16

12 * 16 = 192

So the volume of the triangular prism is 192m³

Answer:

192 m^3

Step-by-step explanation:

V = 1/2 * 4 * 8 *12

V = 1/2 * 384

V = 192

Hope this helps!

A board is 2/3 yards long Jackie cuts the board into pieces that are 1/6 yards long how many pieces are there

Answers

Answer:

4

Step-by-step explanation:

2/3 ÷ 1/6 =

2/3 x 6/1 =

12/3 = 4

Also you can do:

2/3 = 4/6

there are 4- 1/6 in 4/6

If my answer is incorrect, pls correct me!

If you like my answer and explanation, mark me as brainliest!

-Chetan K

a quadrilateral has angle measures of 35.8°, 25.4°, and 178°. What is the other angle measure?

Answers

Answer:

120.8°

Step-by-step explanation:

the total angle sum is of 360 so we add and subtract

35.8+25.4+178= 239.2

360-239.2= 120.8

so the missing angle measure is 120.8°

help me with my math please

Answers

Answer:

Volume of a cylinder = πr²h

Given

V=81π

r=3

find h

Making h the subject

h= V/πr² = 81π/π(3)²

h= 81/9

h= 9cm

What is the product of the complex numbers below?
(3-9i)(6-i)

Answers

Answer:

(9-57i)

Step-by-step explanation:

We need to find the product of the given complex number i.e.

(3-9i)(6-i)

It can be solved as follows :

(3-9i)(6-i) = 3(6) +3(-i) +(-9i)(6) + 9i(i)

= 18-3i-54i+9i²

We know that, i² = -1

So,

= 18-3i-54i+9(-1)

= 18-57i-9

= 9-57i

So, the product of the given complex number is (9-57i).

Marking brainliest

Please help!

Answers

Answer:

The equation for the speed of the train is: 162 = 3x

I think the speed of the train is 54 miles per hour

Step-by-step explanation:

We know that:

y = distance in miles

x = speed of train (miles/hour)

t = time traveled from the departing station (hours)

The equation: y = xt is given, we can therefore substitute the give values:

y = xt or tx

162 = 3x (This would be the equation)

Now we can find x by diving 3 on both sides of "="

162/3 = x

54 = x (This would be the speed of train)

Hope this helps!

X=y/t or 162/3
Speed is 54mph

Mark has a piece of wood that is 11 1/4 ft long. He cuts the piece of wood into as many 2 1/2 -ft pieces as he can. How long is the leftover piece of wood?

Answers

Answer: 9

Step-by-step explanation:

11 2/4 - 2 1/2

46/4 - 5/2

23/2 - 5/2

=18/2= 9

The answer to this question is 8 3/4.
70/8 when simplified is 8 3/4.

5. What does ! mean in a math problem?

It is an exciting problem.

Subtract each number in sequence from that number to 1.

Divide each number in sequence from that number to 1.

Multiply each number in sequence from that number to 1.

Add each number in sequence from that number to 1.

Answers

Answer:

multiply each number in sequence from that number to 1

Answer:

C.Multiply each number in sequence from that number to 1.

Step-by-step explanation:

PLEASE HELP ME
Answer the question in the picture.

Answers

Answer:

3^-2=1/9

3^0=1

3^1=3

3^2=9

Answer:

3^-2 = 1/9

3^0 = 1

3^1 = 3

3^2 = 9

Which of the following best describes the graph below?
N+
5
-4
-3 -2 -1
1
- 1
3
-2
-3
O A. It is a function, but it is not one-to-one.
B. It is a one-to-one function.
O C. It is not a function.
OD. It is a many-to-one function.

Answers

Answer:

C. it is not a function

Step-by-step explanation:

It fails the horizontal and vertical line test.

To pass the horizontal line test [injective]: must not hit a horizontal line passing through more than once.

To pass the vertical line test [function]: must not hit a vertical line passing through more than once.

In right triangle DEF, it is known that Cos D = (12/13) and Cos F = (5/13). If FD = 39, then DE = ? Hint, draw the right triangle.

Answers

Answer:

The value of the line segment [tex]ED[/tex] is 36.

Step-by-step explanation:

The hypotenuse represents the longest side in the right triangle. In this case, FD represents the hypotenuse as it is a multiple of 13. Based on the trigonometric relations described in the statements, we get the following relationships by definition of cosines:

[tex]\cos D = \frac{ED}{FD}[/tex] (1)

[tex]\cos F = \frac{EF}{FD}[/tex] (2)

If we know that [tex]\cos D = \frac{12}{13}[/tex] and [tex]FD = 39[/tex], then the length of the line segment [tex]ED[/tex] is:

[tex]ED = FD\cdot \cos D[/tex]

[tex]ED = 39\cdot \left(\frac{12}{13} \right)[/tex]

[tex]ED = 36[/tex]

The value of the line segment [tex]ED[/tex] is 36.

please help it is due in 10 minutes​

Answers

Answer:

1.  X= 4

2.  X= 1

3. X= 3

4. X= 5

5. X= 7

6. X= -3/4

7. X= 6

8. X= 5

Step-by-step explanation:

Answer:

Look below :)

Step-by-step explanation:

1.x=4

2.×=1

3.x=3

4.x=5

5.x=7

6.x=-0.75

7.x=6

8.x=5

Hope this helps :)

Find the value of x in the isosceles triangle shown below.
13
13
20
10

Answers

Answer:

X=12

Step-by-step explanation:

Khan Academy

The point E(-2, 1) is rotated 90° counterclockwise around the origin. What are the coordinates of the resulting point, E′?

Answers

Answer:

jdhsvsvsjqkwsbs sbwjwisnsbbß

A rectangle is measured by 2 1/3 inches and 2 1/3 inches what is the area

Answers

Answer:

5.44444442889 or 5 [tex]\frac{4}{9}[/tex]

Step-by-step explanation:

Just multiply the 2 numbers together

Answer:

[tex]2\frac{1}{3}^{2}[/tex] or 49/9 inches squared

Step-by-step explanation:

you have a square if those lengths are correct, and the formula for the area of a square is Bh=A B=base length (side on bottom), h=height (vertical side), and A=area, so 2 1/3 * 2 1/3 or 2 1/3^2

if that doesnt make sense, message me and i will try to help you more

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