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statuscvo [17]
3 years ago
7

Because energy is conserved, we can calculate kinetic or potential energy at all times if we know one or the other at different

times. For example, if a car on a roller coaster has 1000J of potential energy when its parked at the top of the ride, and later it only has 100J of potential energy, we know that it must have 1000-100=900 joules of Potential energy at that later time.
If the car has 250J of potential energy at some point in the ride, how much kinetic energy does it have?

a
750
b
100
c
850
d
7
e
200
Mathematics
1 answer:
trasher [3.6K]3 years ago
4 0

Answer:

ohh what's the topic

Step-by-step explanation:

its so hard hahhahahahah

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NEED THE ANSWER ASAP PLEASE
Irina-Kira [14]

It's a linear program; the extrema will be at the corners.

Let's enumerate them.  4 choose 2 gives 6 possible meets of 4 lines.  One pair are parallel, down to five to try.

4x-y=1 intersects x=0 at y=-1, outside the domain y≥0.

4x-y=1 intersects y=0 at x=1/4, (1/4, 0)

4x-y=1 intersects x=5 at y=19, (5,19)

(0,0) is outside the domain 4(0)-0=0 which isn't ≥1.

(5,0) is a valid corner.

It's a triangular domain.  Three points to try,

C(1/4,0) = 6(1/4) + 2(0) = 3/2

C(5,19) = 6(5) + 2(19) = 68

C(5,0) = 6(5) + 2(0) = 30

Answer: Maximum C=68 at (x,y)=(5,19)

7 0
3 years ago
Saby used a probability simulator to roll a 6-sided number cube and flip a coin 100 times. The results are shown in the tables b
Degger [83]
Short Answers
P(Both) = 0.1792
Givens
The total number of roles = 100
Total number of heads = 56
Number of times rolled a four =  32 [check this for me].

Set up the probabilities.
P(H) = 56/100
P(4) = 32/100
P(H)*P(4) = P(Both)

Substitute and solve
P(Both) = 56/100 * 32/100 = 1792/10000
P(Both) = 112/625 because there are many cancellations. Or you could just express it as 0.1972

8 0
3 years ago
Kevin cycles 18 miles every morning as part of his exercise. The time it takes him to complete the distance varies inversely as
Lelechka [254]

Answer:

The T = \frac{18}{m} best models the amount of time it takes him to finish with kelvin cycling .

Option (A) is correct.

Step-by-step explanation:

As given

Kevin cycles 18 miles every morning as part of his exercise.

The time it takes him to complete the distance varies inversely as the speed at which he rides.

Time \propto \frac{1}{Speed}

Time = \frac{Distance}{Speed}

As m miles per hour is represented the speed.

T is the time taken by Kevin cycle for morning exercise .

Distance = 18

Putting the values in the above

T = \frac{18}{m}

Therefore the T = \frac{18}{m} best models the amount of time it takes him to finish with kelvin cycling .

Option (A) is correct.




6 0
3 years ago
Read 2 more answers
el precio del kilogramo de jitomate es de 36.50 juana compro 3 1/2 kilogramos cuanto pago por todo el jitomate?​
SashulF [63]

El precio total por 3 1/2 kg de jitomate que compró Juana es 127.75

Para saber el precio total de los 3 1/2 kg de jitomate que compró Juana debemos hacer el siguiente procedimiento.

Necesitamos saber cuánto vale medio kg de jitomate, para ello dividimos 36.50 en 2.

36.50/2 = 18.25

Luego multiplicamos 36.50 por 3, para saber cuánto valen 3 kg de jitomate.

36.50 X 3 = 109.5

Por último, sumamos el precio de medio kilo con el precio de tres kilos para tener el total que pagó Juana.

109.5 + 18.25 = 127,75

Aprenda más en: brainly.com/question/16170919

8 0
3 years ago
Read 2 more answers
How do I apply the distributive property to create an equivalent expression for 4(6 + 6y)
tia_tia [17]

Answer:

24y+24

Step-by-step explanation:

You multiply the number on the outside of the parenthesis with both the numbers on the inside of the parenthesis. The + stays the same.

4*6y=24y

4*6=24

Hope this helps!

4 0
3 years ago
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