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 %
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.
"Determine which three lengths cannot be the measure of the sides of a triangle. 2 m, 5 m, 6 m 8 m, 10 m, 17 m 5 m, 20 m, 22 m 4 m,15 m, 20 m"
Answer:
None.
All the four given measurements can form a triangle.
Step-by-step explanation:
Given;
first measurement, = 2m , 5m, 6m
second measurement, = 8m, 10m, 17m
third measurement, = 5m, 20m, 22m
fourth measurement, = 4m, 15m, 20m
For any of the three lengths to form a triangle, the sum of any two sides must be greater than the third side.
First measurement: 2m + 5m = 7m and 7m > 6m (can form a triangle)
Second measurement: 8m + 10m = 18m and 18m > 17m (can form a triangle)
Third measurement: 5m + 20m = 25m and 25m > 22m (can form a triangle)
Fourth measurement: 4m + 15m = 19m and 19m < 20m BUT
20 m + 15m = 35 m and 35 m > 4m (can form a triangle)
Therefore, all the four given measurements can form a triangle.
-15a divided by 3 =?
Answer:
Step-by-step explanation:
hi
the answer is 15a
good luck!can you choose me as brainliest?
The answer is -5a
-15/3= -5
I hope this helps you!
The point P(6, –1) is translated according to the rule (x, y) → (x – 5, y – 2). What are the coordinates of P'? P'(1, 2) P'(1, 1) P'(1, –3) P'(4, 4)
Answer:
(1, -3)
Step-by-step explanation:
If the point P(6, –1) is translated according to the rule (x, y) → (x – 5, y – 2).
To get the coordinate of P', we will replace x as 6 and y as -1 in the translation given as shown
Coordinate of P' = (6 -5, -1, -2)
Coordinate of P' = (1, -3)
hence the coordinate of P' is (1, -3)
Answer:
p'(1 -3)
Step-by-step explanation:
There are _ total possible outcomes.
Answer:
20 possible outcomes
Step-by-step explanation:
Please help I’ll mark brainliest if correct please explain also
Answer:
2/5
Step-by-step explanation:
5x+6y=11
as we have to find x coordinate
while y coordinate 3/2 is already given in question
so only put value of y coordinate in given equation to get x coordinate value
5x+6y=11
5x+6*(3/2)=11
5x+3*3=11
5x+9=11
5x=11-9
5x=2
x=2/5
Find the distance between the two numbers on a number line. Write your answer as a decimal.
2.491, -3.065
Answer:
-0.574
Step-by-step explanation:
Subtract the two numbers to get the solution
Pls help :( (will get reported if link)
Answer:
Step-by-step explanation:
A train arrives at the station with 150 passengers on board. 2/5 of the passengers get off the train in seattle , and then 35 passengers board the train . How many passengers are on the train when it leaves the station?
Answer:
95 passengers :) brainliest pls!
Step-by-step explanation:
2/5 = 0.4,
0.4*150 = 60,
60+35 = 95.
Which shows the measures in ascending order for the data below?
14, 18, 11, 11, 15, 18, 11, 12, 15
range, mode, mean, median
range, mean, median, mode
range, median, mode, mean
range, mode, median, mean
Step-by-step explanation:
range, mode, median, mean
Answer:
range, mode, mean, median
Step-by-step explanation:
I just did it on odyssey
Hey can you help me fast!!!
Answer:
32 squared ft
Step-by-step explanation:
(-9)5 ∙ (-9)7
what's the answer
Answer:
2835
Step-by-step explanation:
-9×5= -45
-9×7= -63
-45×(-63)=2835
Help please!
Which expression has a value that is less than the base of the expression?
A. 5/63 (3 is squared)
B. 32 (2 is squared)
C. 23 (3 is squared)
D. 44 (2nd 4 is squared)
Venell put together a model train with 25 train cars. Each train car is 80 millimeters long. How many meters long is Venell's model train if there are no gaps between cars?
Answer:
2 meters
Step-by-step explanation:
its not hard
A population of 45 foxes in a wildlife preserve doubles in size every 10 years. The function y = 45 * 2 ^ x where x is the number of 10-year periods, models the population growth . How many foxes will there be after 20 years After 20 years there will be Foxes(Type a whole number.)
Answer: 180
Step-by-step explanation:
Given
The population of 45 foxes doubles in 10 year period
Population follows [tex]y=45\cdot 2^x[/tex]
After 20 years i.e. x=2 Population is given by
[tex]y=45\cdot 2^2=45\times 4\\y=180[/tex]
Thus, there will be 180 foxes after 20 years
Help me with this!!!!
Answer:
5 units
Step-by-step explanation:
Calculate the distance d using the distance formula
d = [tex]\sqrt{(x_{2}-x_{1})^2+(y_{2}-y_{1 )^2 }[/tex]
with (x₁, y₁ ) = (6, 4) and (x₂, y₂ ) = (3, 8)
d = [tex]\sqrt{(3-6)^2+(8-4)^2}[/tex]
= [tex]\sqrt{(-3)^2+4^2}[/tex]
= [tex]\sqrt{9+16}[/tex]
= [tex]\sqrt{25}[/tex]
= 5
Answer:
5
Step-by-step explanation:
PLEASE HELP I GIVE BRAINLIEST
I Will give brainliest if I can!
Please keep it simple no big maths stuff please!
Thanks in advance!
carpenter has a board that is 8 feet long. e cuts off two pieces. One piece is 32 feet ug and the other is 2 feet long. How ch of the board is left?
Answer:
2 1/6 feet
Step-by-step explanation:
A carpenter has a board that is 8 feet long. He cuts off two pieces. One piece is 3 1/2 feet long and the other is 2 1/3 feet long. How much of the board is left?
Total length of the board = 8 feet
Piece A = 3 1/2 feet
Piece B = 2 1/3 feet
Piece A + piece B
= 3 1/2 feet + 2 1/3 feet
= 7/2 + 7/3
= (21+14) / 6
= 35/6
= 5 5/6 feet
Length of the board remaining = Total length of the board - length of the two pieces
= 8 feet - 35/6 feet
= (48-35) / 6
= 13/6 feet
= 2 1/6 feet
Length of the board remaining = 2 1/6 feet
Please help :( I’ve been on this fit awhile
0.9x+2.3x = -6.4 Find x on both sides of the problem, a little confused... Would we combine the like terms on the left side?
Answer:
-2
Step-by-step explanation:
0.9x+2.3x = -6.4
Add the two values of the left side of the equation together
3.2x = -6.4
Divide both sides of the equation by 3.2
x = -6.4 / 3.2
x = -2
Ashley plans to run a total of 24 miles this week. If Ashley has already run 25% of the total distance, how many more miles does she plan to run this week?
A. 6 miles
B. 20 miles
C. 4 miles
D. 18 miles
Answer:
D.18 millas
Step-by-step explanation:
dividimos el 24 en cuatro partes que terminaria en 6 restamos 6-24 = 18 millas que seria el 75%
PLEASE HELP THIS IS URGENT>>>>NO LINKS!!
Answer:
i believe that the answer is c
What is the product of 4/5 * 7/8 * 2/3 in its simplest form?
Answer:
7/15
Step-by-step explanation:
5k + 7 + 3k help me
Fast
Answer:
8k+7
Step-by-step explanation:
Like terms!
5k+3k=8k
a regular window is 48in long and 24 in wide mary would like to buy a screen for the window the screen is based on the number of square feet the screen is use the facts to find the area of the window in square feet
Answer:
8 square feet
Step-by-step explanation:
48/12=4
24/12=2
2x4=8
51 time 37 divided by 1 equals to what really need help failing
Answer:
(51*31)/1 = 1581
Step-by-step explanation:
Lorane saw a sweater she wanted to buy
on sale for 25% off. The store charges a
4.8% sales tax. If the sweater normally
costs $65.00, how much money did Lorane
pay for the sweater, including tax?
If the length of the longer leg in a 30°-60°-90° triangle is 5V3, what is the length of the shorter leg?
A. 3
B. 5
C. 5v2
D. 10
Answer:
B. 5
Step-by-step explanation:
Let x = length of shorter leg
longer leg = [tex]\sqrt{3}[/tex] times the shorter leg
5[tex]\sqrt{3}[/tex] = x[tex]\sqrt{3}[/tex]
x = 5
If it is 78°F in Memphis and -14°F
in Junaeu, what is the temperature
difference between the two cities?
Answer:
There is a 92°F difference between the two cities.
Step-by-step explanation:
Since you are finding the difference of temperatures between the two cities, you need to subtract -14 from 78. It looks like 78-(-14). Since you are subtracting a negative number, the equation becomes 78+14. 78+14 is 92.