Mathematics High School

Um motor elétrico recebe 2.800 kJ de energia elétrica. Transforma 900 kJ em energia térmica, 150.000 J em energia sonora e o restante em energia cinética. Podemos afirmar que seu rendimento é de: *
a) 62,5 %
b) 68,7 %
c) 70,4 %
d) 72,7 %
e) 92,3 %

Answers

Answer 1

Uno se pierde, el otro se recicla.

Explicación:

El movimiento de nutrientes difiere del flujo de energía en un ecosistema porque los nutrientes se pueden reciclar mientras que, por otro lado, la energía se pierde en el ecosistema. Tanto los nutrientes como la energía fluyen en la misma dirección y toda la energía del ecosistema proviene del sol, que es la principal fuente de energía. Entonces podemos decir que la energía perdida y los nutrientes se reciclan en el ecosistema.

Related Questions

A scientist has collected the following data on the population of a bacteria colony over a thirty-minute period:

5 minutes: 78,000
10 minutes: 234,000
15 minutes: 657,000
20 minutes: 1,784,000
25 minutes: 5,040,000
30 minutes: 14,980,000

Which type of graph would be best to use to display the growth of the colony?
A.) a bar graph
B.) a circle graph
C.) a histogram
D.) a line graph

Answers

I think it’s D sorry if it’s wrong

7.8x = 32.76


Show your work

Answers

Answer:

x=4.2

Step-by-step explanation:

7.8x  =   32.76

/7.8          /7.8

x=4.2

Mhanifa Plz help me with this thank you!

Answers

Answer:

D

Step-by-step explanation:

This is an example of the Pythagorean theorem.

In triangle BEH, the sum of the squares of the sides of the two smaller sides, BE and BH is equal to the longest side squared, EH.

HELP
PLZZZ Z DONT GIVE ME A LINK

Answers

Answer:

These relationships are realted because the variable is multiplied by ten to get the function.

9cm: 90mm

12 1/4cm: 122.5mm

50cm: 500mm

88.49cm: 884.9mm

By the way, can you follow me on Brainly?

Thanks!

CAN SUMONE HEEEELP ME PLEASE I DONT UNDERSTAND LIKE THIS TEACHER REALLY THINK IK EVERYTHING SMH BUT ILL GIVE BRAINLY! thank youuu

Answers

Answer:

16,872

Step-by-step explanation:

Guys pls help me!!!!!!

Answers

Answer:

This would be graph A

Step-by-step explanation:

x = 2  means that it is a vertical ( up and down) line

It is a x=2

This would be graph A

BRAINIEST TO WHOEVER RIGHT “ identify the box and whisker plot that represents the data.” “Cat lengths (in inches) : 16, 18, 20, 25, 17, 22, 23, 21”

Answers

The second box/whisker plot is correct.

First we have to put he data set in ascending order:

16, 17, 18, 20, 21, 22, 23, 25

The median (middle number or average of 2 middle numbers) = 20.5 The center line of the box needs to be at 20.5

The middle of the first half of the data is 17.5, (average of 17 & 18) so the left side of the box needs to be at 17.5

The middle of the second half of the data is 22.5, (average of 22 & 23), so the right side of the box needs to be at 22.5.

The “whiskers” are your bottom & top numbers...representing the full range of data. They should be at 16 & 25.

15 = 5(x +2 )

x=

ill mark brainliest and 20 points

Answers

Answer:

x=1

Step-by-step explanation:

15 = 5(x +2 )

15/5= 3

3-2= 1

x=1

If a nintendo costs $225 and teh sales tax is 4.75%, how much will it cost in total to get the nintendo?

Answers

Answer:

$235.69

Step-by-step explanation:

Add 10.6875 to 225

Answer:

$235.69

Step-by-step explanation:

If 3x – 2 (2 + 1) = 4, then 5x =?

Answers

Answer:

50/3

Step-by-step explanation:

For x

3x-2(2+1)=4

3x-2(3)=4

3x-6=4

3x=4+6

3x=10

x=10/3

 as we have to find 5x=?

    5(10/3)

50/3

If the perimeter of a triangle is 31 ft and two of the side lengths are 15 ft and 10 ft, what is the length of the third side?

A.16ft
B.25ft
C.6ft
D.56ft

Answers

Answer:

C) 6 ft

Step-by-step explanation:

Perimeter is just adding the side lengths together so...

31-15-10=x

6=x

so your answer is 6ft

c) 6ft is the answer

A ______ is a comparison of two quantities. ratios can be a part-to-part,part-to- _______, or whole -to- __________ comparisons. ratios can be written with the word _____, with a _______, or as a ___________.​

Answers

Answer:

ratio

part-to-whole

whole-to-whole

with the word to

with a colon

or as a fraction

Step-by-step explanation:

Which statement is true about the lines 3−2=27 3 y - 2 x = 27 and 4−2=36 4 y - 2 x = 36 ?

Answers

The two lines 3 y - 2 x = 27 and 4 y - 2 x = 36 are parallel to each other because their slopes (i.e., -2/3 and -2/4) are equal.

What are parallel lines?

Parallel lines are lines in a plane that do not intersect and are always the same distance apart. They have the same slope and will never meet, regardless of how far they are extended.

Therefore, the correct answer is as given above. It can be concluded that lines 3 y - 2 x = 27 and 4 y - 2 x = 36 are parallel lines to each other for their slopes (i.e., -2/3 and -2/4) are the same.

learn more about parallel lines: https://brainly.com/question/24607467

#SPJ1

The complete question goes thus:

Which statement is true about the lines 3−2=27 3 y - 2 x = 27 and 4−2=36 4 y - 2 x = 36 ?

A. lines 3 y - 2 x = 27 and 4 y - 2 x = 36 are parallel to each other

B. lines 3 y - 2 x = 27 and 4−2=36 are inequalities

C. lines 3−2=27 and 3 y - 2 x = 27 are the same

D. all lines are equal

I need help with this problem

Answers

Answer:

24

Step-by-step explanation:

5^2-3^2=?

25-9=16

sqrt 16 = 4

6×4=24

PLEASE HELP ILL GIVE MORE IF ITS RIGHTTTTT

Answers

The answer is a. Tell me if im wrong


One number is 2 times the other number. The sum of the numbers is
150. Find the numbers.

Answers

Answer:

x = 50; 2x = 100

Step-by-step explanation:

x + 2x = 150

3x = 150

x = 50

2x = 2(50)

2x = 100

Factor each expression completely.
5x^2 + 10x

SHOW YOUR WORK!!!

Answers

5x^2+10x

factorise 5 and 10 first
then factorise the x

so 5x(x+2)
completed :))

hope this helped :)

what is 2/3d -8=1/2d

Answers

Answer:

d = 48

Step-by-step explanation:

Please help!!:(( I’ll give the best answer the brainliest :)
(and of y’all can please stop with the links it’s not working)

The quadrilateral SMUG on the coordinate plane has the following characteristics.

SM can be represented by the equation x+4y = 7 where 3 <_ x< _ 7

UG can be represented by the equation why equals 1/4x - 5/2 where 2<_x <_ 6

Part A: graph the figure represented by the information given above

Answers

Answer:

Step-by-step explanation:

Also I need part b on this one

Answers

Answer:

there is nothing here but thanks for the points

Step-by-step explanation:

Have a great rest of your day/night!

What is the value of x?

Enter your answer in the box.

Answers

Answer:

46 degrees

Step-by-step explanation:

you know that if you add 134 and x  it will equal a straight line or 180 degrees. So set it up as an addition problem.

134 + x =180   subt. 134 from both sides

x=180-134

x=46 degrees

Answer:

46

Step-by-step explanation:

HELP NEEDED 20 POINTS AND BRAINLIST!!!! Please explain your answer and no links! please!

Answers

Answer:

From (0,0) and go down 1 and put a dot then down 4 and over to the right 1 and draw a line.

Step-by-step explanation:

Hope this helps have a nice day!

what is the answer pls help 5' 2" − 2' 3" =

Answers

Answer:

2' 11'

Step-by-step explanation:

Answer:

1.83333333333

Step-by-step explanation:

i dunno if these were supposed to be fractions

What is the perimiter of a quadrilateral with verticles at (5,2), (10,2), (5,5), and (10,5)

Answers

Answer:

55

Step-by-step explanation:

we bought that house last year it is ___​

Answers

Answer:

this year is 2021

Step-by-step explanation:

Answer:

What are the answer choices?

Step-by-step explanation: ??

A 1.5m tall boy casts a 3m shadow. Calculate the height of a tree that simultaneously casts an 8m shadow.

Answers

If 1.5m boy makes a 3m that means it doubled. A 8m tree can probably be 16m

Lindsey made a map of her town which place in Lindsey's town is located at 4,5

Answers

Answer:

the school

Step-by-step explanation:

the point given is (4,5) so let's try to hone in on that so to speak-

with that in mind, the way that i find the easiest to answer this is by using rise over run or the crawl before you walk method

seeing as how both are practically the same i'll just go with the craw before you walk method-

so we will 'crawl' to 4 along the x axis then we'll 'walk' and stop once we reach (4,5) and at (4,5) there is the school building and since her town is also located at the same point the school building is the correct answer

good luck :)

i hope this helps

brainliest would be highly appreciated

have a nice day!

HELP NEEDED!!! 20 POINTS FOR A ANSWER AND EXPLANATION ON QUESTION #2! I cant figure this out help me please

Answers

Step-by-step explanation:

Start at the orgin.

The y intercept in the equation is -1 so I would shift 1 unit down to the orgin at (0,-1)

Then at the point, since the slope is -4. I would go down -4 units then go over 1 unit to the right.. So the next point would be (1,-5) then so on and so on.

You can check if your graph is correct by writing out specific points on the linear equation and making sure there slope is equal to -4.

At the fast food restaurant, one hamburger and five small fries cost $8.74. If two hamburgers and
three small fries cost $7.75, what is the cost of one hamburger?

Answers

15.25 hopefully it helps you

Help me out with this math please

Answers

Answer:

I believe it is C.

Answer:

B

Step-by-step explanation:

because I put it on the calculator and got 0.0195, and they give us 1.95, we have to move the decimal two times in front, that is -2. So the answer is B.  

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