Mathematics Middle School

In the course of a short race, a car does 50,000 J of work in 7 s. What is the power of the car during the race? (round to the nearest whole number)

Answers

Answer 1

Answer:

Work done is the product of distance and force, it is measured in joules.

Power is the rate of work done given by dividing the work done by time

Power (watts)= workdone (J)/ time (s)

                     = 50,000J/7 sec

                     = 7142.857 watts

Therefore, the power of the car during the race was 7142.857 watts

Step-by-step explanation:

Related Questions

Can you please explain how you got the answer? Thank you.

Answers

Answer:

The answer is 3386880

Step-by-step explanation:

Volume = 1/3a²h

Volume = 1/3*252²*160

Volume = 1/3*63504*160

Volume = 21168*160

Volume = 3386880 yards³

pls help no links pls

Answers

The answer for that question is D I hoped it helped!
The sweet to this question is D

What is the circumference of a circle that has a radius of 5in.? (Use 3.14 for pi, round to your nearest hundredth if necessary

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Answer: C≈31.42

HOPE THIS HELPS

Solve for brainliest
3x + 2y = -13
3x + 4y = 1

Answers

Answer:

x=-4

y=3

Step-by-step explanation:

3x=-1

x=-4

-4y=-1

y=3

Hope helps you :3

Answer:

Point form: (-9,7)

Equation form: x=-9, y=7

Step-by-step explanation:

Please help me I will give brainliest

Answers

Answer:

1st one

Step-by-step explanation:

The length of the spring is 7.98 cm with a weight of 34 grams attached to it.

please help this is due in 45 minutes!!!!!

Answers

Answer:

75 in

Step-by-step explanation:

Answer:

I think the actual length would be 75 inches. ( i'm not totally sure though C: )

Step-by-step explanation:

So, since the scale factor is 1 : 12, the model is 1/12 of the actual. So, multiply:

6.25 * 12 = 75

So, the actual length would be 75 inches.

To check:

75/6.25 = 12!

Question + Diagram in picture
will give brainliest to correct answer

Answers

Answer:

2.64 cm

Step-by-step explanation:

The length of CD is 2.64 cm

2.64 is the answer.

The graph shows a line of best fit because the points are plotted evenly above and below the line.
The graph shows a line of best fit because there is a straight line.
The graph shows a line of best fit because the association is zero.
The graph shows a line of best fit because the points fit around the line.

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it should be A: the points are plotted evenly above and below

8) find the volume of a prism

Answers

Answer:

I may be wrong but A

Step-by-step explanation:

What are the coordinates of the vertices of a rectangle with an perimeter of 12 units and an area of 5 sq. units.

Answers

Answer: The perimeter of the rectangle is: P = 2( w + L) = 2 ( 8+5) = 26 units

The area of the rectangle is A = L w, A = 8 x 5 = 40 units to the 2nd power

Step-by-step explanation:

In order to solve this problem you need to find the distances between the vertices. By inspection the points (5,3) and (5,-2) form one the of the rectangle w = √ ( 5-5)2 + ( -2-3)2 = 5

The length can be obtained by finding distance between the points (5,3) and ( -3,3),

L = √(3-3)2+(-3-5)2 = 8

= 26 units

The perimeter of the rectangle is: P = 2( w + L) = 2 ( 8+5) = 26 units

The rectangle is the quadrilateral with 4 right angles. It could also be defined as, an equiangular quadrilateral, since equiangular means that the all of this angles are = (360°/4 = 90°); and the parallelogram containing a right angle. A rectangle with 4 sides of equal length is a square. The term oblong is occasionally used to refer to a non square rectangle.

The area of rectangle is A = L w, A = 8 x 5 = 40 units to the 2nd power

In order to solve this question you want to find the distances between the vertices. By inspection the points (5,3) and (5,-2) form 1 the of the rectangle w = √ ( 5-5)2 + ( -2-3)2 = 5

The length can be obtained by finding distance between the points (5,3) and ( -3,3),

L = √(3-3)2+(-3-5)2 = 8

The perimeter of rectangle is: P = 2( w + L) = 2 ( 8+5) = 26 units

Learn more about rectangle here https://brainly.com/question/15019502

#SPJ2

HELP! DUE TODAY! PLEASE!

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what’s the question??
what’s the question to that?

Help me pleaseeeeeee

Answers

everything except the last two, I think.

46. A holiday resort in Tasmania reduced its overnight rates from 233 to 159.

Answers

The link takes you to it

A picnic basket was marked up 95% from an original cost of $9.57. Last Friday, Rosanne bought the picnic basket and paid an additional 8% in sales tax. What was her total cost?

Answers

Answer: $10.60

Step-by-step explanation:

Turn 95% into a decimal then add $9.57, then turn 8% into a decimal then add all of the numbers together.

I'm not sure if this is right, I did it on my own.

The total cost to be paid is $20.15

What is Percentage?

To determine the quantity or percentage of something in terms of 100, use the percentage formula. Per cent simply means one in a hundred. Using the percentage formula, a number between 0 and 1 can be expressed. A number that is expressed as a fraction of 100 is what it is. It is mostly used to compare and determine ratios and is represented by the symbol %.

Given:

Original cost =  $9.57

Markup= 95%

So, the new cost of the basket

=95/100 x 9.57

=0.95 x 9.57

=$9.0915

Thus, the cost of the basket is

= 9.57+9.0915

=18.66

Also, the sales tax is 8%

=8/100 x 18.66

=0.08 x 18.66

=1.4928

Therefore, the total amount to be paid is

=18.66+1.4928

=$20.15

Learn more about Percentage here:

https://brainly.com/question/29306119

#SPJ1

answer the 4 simple questions ( will give thanks, 5 stars, and brainliest )

Answers

1. x<10
2.x>5
3.x> or equal to 3
4.x

The sum of present ages of John and his father is 58 years. If John is 24 years younger than his father, then find the present age of John’s father.

Answers

Answer:

father is 41

Step-by-step explanation:

J = johns age

f = fathers age

j+f = 58

j = f-24

Substitute the second equation into the first

f-24 +f = 58

2f -24= 58

Add 24 to each side

2f = 58+24

2f =82

f = 82/2

f = 41

help please i dont get it ( i dont pay attention in class...)

Answers

Answer:

Okay, I won't give the answers... HOWEVER, I will show you how to get them yourself! :>

Step-by-step explanation:

A triangles area is essentially half of a square. In my math class, we would multiply the main base, and the height and then proceed to break it in half. For example;

TRIANGLE ONE-- 16 x 16 =__ then cut your answer in half

Hope I helped you out! ~Chaos

I don’t think u divide because u would get 16 again just times the number inside by 2

prime factoring
78 (please show ur factor tree i need it)

Answers

Answer:

---

Step-by-step explanation:

     78

1     |     78

2    |     39

3    |     26

6    |     13

So the factors are 1, 2, 3, 6, 13, 26, 39, and 78

---

hope it helps

please help if the answer is correct I will give you brain last only smart people please. this anser will make me pas or fail

Answers

retake the screen shot so i can see it

PLEASE HELP ME QUICK DUDES!!

Answers

Answer:

See graph attached

Step-by-step explanation:

alright one more question
whoever can answer this and the next question wins brainliest

Answers

Answer:

1.2 miles

Step-by-step explanation:

2/3 of 1 4/5 is 1.2

Help question is in the pic PLEASE EXPLAIN HOW YOU GOT THE ANSWER!

Answers

Answer:

Correct me if im wrong but i believe you just multiply all the sides by each other :)

Step-by-step explanation:

Answer:

i think you just multiply all the sides by each other in the order of length*width*height

Step-by-step explanation:

** means times (multiplication)

What are the coordinates of the vertices of a rectangle with an perimeter of 12 units and an area of 5 sq. units.

Answers

I believe it is 12 minus 3

ion but u wanna wut I think? I think its a rectangle on a coordinate line

:(((( plz helpppp i dont get it

Answers

We could solve problems like these by plugging in values

Let’s start with A

y = 94x

Let’s use 5, 15, 25 from the table

94(5) = 470
94(15) = 1410
94(25) = 2350

Next, B

y = 5x

5(5) = 25

This is wrong

Next, C

y = x + 470

Let’s try 5

475 = 5 + 470

Close, but wrong

Next, D

10 = 5 + 5

This is wrong, so the answer is A.
the answer is y=94x. pls give brainliest

A school typically sells 500 yearbooks . . .

Answers

a = 100 and i’m not exactly sure what b equals (i’m new to this so i’m sorry if my answer was un-necessary)

You work on a problem calculating either area or volume. Your answer is 210 ft3. Did you work on an area or volume problem?

Answers

Answer:

Volume

Step-by-step explanation:

ft^3 is cubic foot. Cubic foot is used for volume of a cube

Please Answer this Correctly For Brainiest!

Answers

Answer:

78%

Step-by-step explanation:

There are 18 games in total. 14 of them have 77 - 92 points scored in them. Divide 14 by 18 to get approximately .7778, then multiply by 100 to get approximately 77.7778, which can then be rounded to 78%.

Answer: 78% because I took it

HEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEELLLLLLLLLLLLLLLLLLLLLLLLLLLPPPPPPPPP ME!!!!!!!!!!!!!

Answers

Answer:

i think that is 4

Step-by-step explanation:

fydxudugxxfjg

V = l • h • w

V = 4 • 1 • 1 = 4

I know this is kinda easy but I don’t know and don’t have a lot of time

Answers

D
Icndndndjdjdjedjenbdbd

BRAINLIEST if correct




4

Answers

Answer:

Yes it is biased

Step-by-step explanation:

It shows favoritism

Answer:

False

Explanation:
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