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olga55 [171]
3 years ago
14

In physics, kinetic energy is the energy of an object in motion. Kinetic energy, K, measured in joules (J), is

Mathematics
1 answer:
Kryger [21]3 years ago
5 0

Answer:

m =  \frac{2k}{v^{2} }

Step-by-step explanation:

k  =  \frac{1}{2} mv ^{2}

v ^{2} m = 2k

m =  \frac{2k}{v ^{2} }

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What is the value of -2[3-11] divided by 3
faust18 [17]
I need this answer too
5 0
3 years ago
The following data summarizes results from 889 pedestrian deaths that were caused by accidents. If one of the pedestrian deaths
pickupchik [31]

Answer:

P(A or B) = 0.291 +0.159 -0.0562=0.3938

Step-by-step explanation:

Previous concepts

The total probability rule is "used to find the probability of an event, A, when you don’t know enough about A’s probabilities to calculate it directly. Instead, you take a related event, B, and use that to calculate the probability for A".

Solution to the problem

The data given:

                                                             Pedestrian

                                       Intoxicated                       Not intoxicated     Total          

Intoxicated                           50                                        91                    141

Not intoxicated                    209                                     539                 748

Total                                     259                                      630                889

The rows on this case are associated to the tyep of Driver.

Let's define the following events:

A =Pedestrian was intoxicated

B= Driver was intoxicated

And we can find the probabilities for the events A and B like this with the info given:

P(A) = \frac{50+209}{889}=0.291

P(B) = \frac{50+91}{889}=0.159

We can find also the probaility that pedestrian was intoxicated AND driver was ​intoxicated, like this:

P(A and B) = \frac{50}{889}=0.0562

Because the intersection for the events A and B is 50 and the grand total is 889.

Now we can use the total rule of probability given by this:

P(A or B) = P(A) +P(B) -P(A and B)

And since w ehave everything to replace we got:

P(A or B) = 0.291 +0.159 -0.0562=0.3938

7 0
3 years ago
A rectangular patio has a perimeter of 44 feet. If the length of the patio is 5 feet less than twice the​ width, find the dimens
valentinak56 [21]
ANSWER: L=13; W=9
--Please read this explanation and this will be much easier for you, it took time to type..

Set up variables first. I will lead through how to get the answer.

First get variables. So, what is Perimeter? Perimeter is like so:

P = 2L + 2W = 44ft
Now instead of using P, we'll continue with

2L + 2W = 44 because this can be used to help answer the question better than P.

"Length of the patio is 5 ft less than twice the width"

So it says "length of the patio", so we put

L =

"5 ft less than twice the width"

L = 2W - 5

Now we know what L is, and we can plug this in to our first equation!

2L + 2W = 44
L = 2W - 5

Multiply by 2...
2L = 4W - 10

Plug in...
4W - 10 (2L see?) + 2W = 44

Rearrange...
4W + 2W - 10 = 44

And solve...
=6W - 10 = 44
=6W = 44 + 10
=6W = 54
=6W/6 = 54/6
=W = 9

Now we have W. Plug this into our other equation.

L = 2W - 5
L = 2*9 - 5
L = 18 - 5
L = 13

The length of the patio is 13 ft and the width of the patio is 9 ft.
7 0
3 years ago
Subtract -5x2 + 10x – 1 from 6x2<br> X + 3.
Vadim26 [7]

Answer:

Can you add a screenshot of the equations? It's hard to figure it out in this format and I don't want to give you the wrong answer.

Step-by-step explanation:

4 0
2 years ago
Look at the image above and awnser please, you will be my lifesaver if you do so.
Burka [1]
Answer below. hope it’s right !

5 0
2 years ago
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