Mathematics High School

Una persona hace un trabajo en 6 horas, una segunda hace el trabajo en 8 horas y una tercera hace el trabajo en 10 horas. Si las tres personas trabajan al mismo tiempo ¿Cuánto tiempo durarán haciendo el trabajo?

a) 1 16/47 horas.

b) 2 26/47 horas.

c) 3 1/47 horas.

d) 4 36/47 horas.

Answers

Answer 1

Answer:

b) [tex]2\dfrac{26}{47}\ \text{horas}[/tex]

Step-by-step explanation:

Tiempo necesario para completar el trabajo en primera persona = 6 horas

Trabajo hecho en 1 hora = [tex]\dfrac{1}{6}[/tex]

Tiempo necesario para completar el trabajo por segunda persona = 8 horas

Trabajo hecho en 1 hora = [tex]\dfrac{1}{8}[/tex]

Tiempo necesario para completar el trabajo por tercera persona = 10 horas

Trabajo hecho en 1 hora = [tex]\dfrac{1}{10}[/tex]

El tiempo necesario para completar el trabajo juntos viene dado por

[tex]\dfrac{1}{\dfrac{1}{6}+\dfrac{1}{8}+\dfrac{1}{10}}=\dfrac{1}{\dfrac{47}{120}}\\ =\dfrac{120}{47}=2\dfrac{26}{47}\ \text{horas}[/tex]

El tiempo necesario para completar el trabajo juntos es [tex]2\dfrac{26}{47}\ \text{horas}[/tex].

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Answer:

the answer u have is right cause i have telepathy

Step-by-step explanation:

Answer:

D because you add the top and bottom then multiply height. Then divide by 2

Step-by-step explanation:

Use a table to find (h-8)(h-9).

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Well, I don’t see a table but your answer:

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Answers

Answer:

15 I think. not fully shore though

Step-by-step explanation:

Multiply 3x4. then 18-12=6. lastly add 9

Answer:

15

it is given that. k= 4

so, putting the value of k. in

given equation = 18 - (3*4 ) + 9

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hope it helps

please what is a transverse wave​

Answers

Answer:

a wave vibrating at right angles to the direction of its propagation

Step-by-step explanation:

What will be the new position of the given point (–2, –3) after reflection across the x-axis?
a) (2, 3)
b) (-3, -2)
c) (-2, 3)
d) (3, -2)

Answers

Answer:

(2,3)

Step-by-step explanation:

The new position of the point (–2, –3) after reflection across the x-axis is (-2,3)

How to determine the new position?

The point is given as:

(-2,-3)

The rule of reflection across the x-axis is:

(x,y) -> (x,-y)

So, we have:

(-2,-3) -> (-2,3)

Hence, the new position of the point (–2, –3) after reflection across the x-axis is (-2,3)

Read more about reflection at:

https://brainly.com/question/4289712

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Please help me with the question please ASAP ASAP

Answers

156

Especially since the shape is convex


Answer:

2340

Step-by-step explanation:

Since, the formula for finding sum of interior angles of a polygon is :

(n-2) × 180° [Where 'n' denotes number of sides]

Hence,

Sum of interior angles of a pentadecagon is ,

(15 - 2) × 180°

= 13 × 180°

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What are the domain and range of f(x) = 2|x – 4| + 3 ?

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☁️ Answer ☁️

I think it's the second one.

Hope it helps.

Have a nice day hyung/noona!~ ￣▽￣❤️

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Answer:

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Step-by-step explanation:

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Answer: u multiply them all together

Step-by-step explanation:nugggybi8ybggg8yiubgy8iibgu777777777b8u

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The sum of the areas of all the faces of a 3D object is called:

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Answers

Answer:

b

Step-by-step explanation:

Answer:

Surface area

Step-by-step explanation:

Area is the space taken up by one surface plane

Volume is the amount of space taken up by the entire object

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Given that 6 > -2, which statements are true? Check all that apply.
(2)(6) > (-2)(2)
-2
2 2
(-2)(6) > (-2)(-2)
-2
-2 --2
(2)(6) < (-2)(2)
-2
2 2
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Answers

Answer:

hello rspl social science sample paper chaye

Answer:

i don't know

Step-by-step explanation:

Jay is paid $12.50 per hour. Last week, his paycheck totaled $112.50. How many hours did he work? Write and solve an equation to represent the situation.

Answers

Answer:

9 hours

Step-by-step explanation:

If he earns 12.50 an hour...

112.50 ÷ 12.50 = 9 hours

Answer:

9 hours

Step-by-step explanation:

112.50 ÷ 12.50 = 9 or 9 hours

please solve
I really need help​

Answers

9514 1404 393

Answer:

  x = 12

Step-by-step explanation:

The similarity statement tells you corresponding sides have the same ratio.

  AB/BC = FE/EC

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  x = 10(6/5)

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Students were asked how they travel to school. The graph shows the results of the survey. Based on the graph, how many students out of 300 students can be expected to walk or bike to school?

Answers

Answer:

we need the graph in order to find the answer.

Step-by-step explanation:

Amanda pours 3/4 of her water into Barbara’s empty bottle. Barbara then pours 3/5 of her water into Charlie’s empty bottle. Charlie then pours 1/2 of his water into David’s empty bottle. If David now has 18 ounces of water, how many ounces does Amanda still have?

Answers

Answer:

20 ounces of water

Step-by-step explanation:

Work backwards. David has 18 ounces, which is half of Charlie's. So, Charlie had 18•2=36 ounces. That was 3/5 of Barbara's water, so Barbara had 60 ounces. That is 3/4 of Amanda's water, so Amanda had 80 ounces. To find how much Amanda had left subtract 60 from 80 to get 20.

Help me answer all of those questions

Answers

1) 100N 2) 0.3m/s² 3) 1/2 kg

Step-by-step explanation:

1) F = ma

F = 50×2

F = 100N

2) F = ma

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Answers

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Step-by-step explanation:

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Answers

Answer:

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Step-by-step explanation:

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Answers

Answer:

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Step-by-step explanation:

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Answers

Answer:

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Answers

Answer:

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Answers

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Step-by-step explanation:

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Answers

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Answer:

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Step-by-step explanation:

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3 degrees
4 degrees
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Step-by-step explanation:

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the answer is less than 1/8 of a pizza. 1/4 divided by 6 = 1/4 x 1/6 = 1/24

and it is less than 1/8, pretty obvious.

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Answers

Answer:

A. 25.12 meters

..........

It is 50.24 you take the radius and multiply by two to get the diameter then you multiply that by pi-3.14 and you get the circumference

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O x= -1, x = 11

Ox=-1, x = -11

O x= 14 = -26

O x= 26, x=-14

Answers

Answer:

[tex]x = -1[/tex] or [tex]x = -11[/tex]

Step-by-step explanation:

Given

[tex]f(x) = 2|x+6| - 4[/tex]

Required

Find x when

[tex]f(x) = 6[/tex]

Substitute 6 for f(x)

[tex]6 = 2|x+6| - 4[/tex]

Add 4 to both sides

[tex]4+6 = 2|x+6| - 4+4[/tex]

[tex]10 = 2|x+6|[/tex]

Divide both sides by 2

[tex]5 = |x + 6|[/tex]

Rewrite as:

[tex]|x + 6| = 5[/tex]

This can be split to:

[tex]x + 6 = 5[/tex] or [tex]-(x + 6)=5[/tex]

Solve for x in both cases

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[tex]x = -1[/tex] or [tex]x = -6 - 5[/tex]

[tex]x = -1[/tex] or [tex]x = -11[/tex]

Answer:

i think it’s x= -1, x = -11

Step-by-step explanation:

The Sumner Museum had collected family photos of town residents for more than a
century. The museum director reported that between 1890 and 1900, the average family
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Answers

Answer:

3

Step-by-step explanation:

444444444444

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