A motorcar is running at the rate of 66 km per hour. Each
of its wheels makes 500 revolutions per minute. Find the
radius of the wheel.
.(Ans: 35 cm)

Answers

Answer 1

Answer:

Given:

The radius of a wheel =r=35 cm=0.35 cm.

The speed it must keep =s=66 km/h=

60

66×1000

m/min=1100 m/min

To find out:

The number of revolution =n, it makes per minute to maintain that speed.

Solution:

The circumference =C of the wheel =2πr=2×

7

22

×0.35 m=2.2 m=C

The distance the wheel covers in 1 min=d=1100 m.

Now the distance =d covered by a wheel in one revolution = the circumference of the wheel.

∴ Here the number of revolution =n=

C

d

=

2.2

1100

=500.


Related Questions

Write the algebraic expression of “the sum of a multiple of 3 and the number one greater than multiple of 3”

Answers

Answer:

9 IS THE ANSWER

Step-by-step explanation:

3*3=9

Select the correct answer.
Simplify the expression

Answers

Answer: A

Step-by-step explanation:

Since multiplication is the only operation under the radical, you can apply the root to each term. Im not sure if I worded that correctly, but ill hopefully explain correctly.

First we need to take the cubed root of 648. This number doesn't have a perfect root, but it can be simplified. 648 is the same as 216*3, and 216 has a perfect cubed root of 6. So we can bring the 6 outside of the radical

[tex]3x*6\sqrt[3]{3x^4y^8}=18x\sqrt[3]{3x^4y^8}[/tex]

The next step is simplifying the variables, which is the easiest part. Just split them up into multiples of 3, again poor explanation but Ill show what I mean.

[tex]18x\sqrt[3]{3x^3xy^3y^3y^2}[/tex]

The cubed root and the cubed power will cancel and can be brought outside the radical[tex]18x*xy^2\sqrt[3]{2xy^2} =18x^2y^2\sqrt[3]{3xy^2}[/tex]

The value of 3 expo3 + 4 expo2

Answers

Answer:

43

Step-by-step explanation:

[tex]3^{3}[/tex]+[tex]4^{2}[/tex]=

Solve:

[tex]3^{3}[/tex]= 3*3*3= 9*3= 27

[tex]4^{2}[/tex]= 4*4= 16

Then add them together:

27+16= 43

Hope this helps!

Jenna won 77 toys playing basketball at her school's game night. Later, she gave four to each of her friends. She only has 9 remaining. How many friends does she have?

Answers

Jenna has 17 friends.

The equation can be written as:
77 - 4x = 9 where 77 is the total number of toys, 4 is how many toys she gave to each friend, x is the number of friends, and 9 is the toys remaining.

To solve for x, the number of friends:
77 -4x=9

Subtract 77 from both sides
77-77 -4x= 9-77
-4x= -68

Then divide both sides by -4 to isolate x.
-4x/-4 = 1x and -68/-4 = 17.
1x= 17, so the number of friends is 17.

6) Burritos are $4 each and Tacos are $2 each. You have no more than $20 to spend. Write an
inequality to model this.

Answers

I would do 4x plus 2y = 20 and then solve

Here u go Hanifa :D <----------

Answers

Answer:

B. 2200 ft²

Step-by-step explanation:

To find the area, calculate two parts and add up

The triangle section has sides:

40 ft and 50 - 30 = 20 ft

The area:

1/2*20*40 = 400 ft²

The rectangle section has sides:

30 ft and 20 + 40 = 60 ft

The area:

30*60 = 1800 ft²

Total area:

400 + 1800 = 2200 ft²

Correct option is B

A school marching band has 200 members.There are 50 band members who play brass instruments.What percent of the band members play brass instruments?

Answers

Answer:

25% Or

1/4 Or

0.25

Step-by-step explanation:

Solve:

200 divided by 50 is 4

Check your math:

50*4= 200

Your only counting a single piece of this whole. This can be written in 3 ways, 25%, 1/4, or 0.25.

Hope this helps!

Answer:50%

Step-by-step explanation: total no. of band players=200

no. of brass players=50

% of brass players=50/200 x 100

Linear equations: 5 +2(2x-3)+8x = -5x +2. and . 5 -2(2x-3)+8x = -5x +2

Plz show your work.

Answers

Answer:

hello,I'll edit the process and say step by step.

result= 28x-30= -70x²+73x-18 = -5x+2

Sorry, it was a little long process. I could not explain them all. I said the result directly.And I am Turkish, sorry if there is a problem with my pronunciation.But remember, you will do it according to the distribution in the parenthesis.

13 In 2010, Cool Game Corporation made a profit of $84.7 million.
The profit made in 2010 was 2.2 times the profit the company
made in 2009.

Answers

in 2009 the company made thirty-eight million five hundred thousand dollars

I BET NOBODY KNOWS HOW TO DO THIS What is the mass in grams of a single calcium atom? (hint: start with 1 atom Ca and do 2 dimensional analysis steps)

Format for the answer is ___ x 10 exponent

_ x 10 _

Give value to four significant figures.

Answers

Answer:

very specific...sus...yea no one knows

Step-by-step explanation:

In order to determine the mass of one atom of an element, you must determine its molar mass, which is its atomic weight on the periodic table in g/mol, and you need to know the relationship between moles and the number of atoms: 1 mol of atoms = 6.022×1023 atoms . Then divide the molar mass by 6.022×1023 atoms/mol .

Solve C=AB+D for B

• C-D =B
—————-
A

•AC-D =B

•C - D=B
——
A

•C+D =B
———
A
(If you don’t understand what the options are look at the photo pls <3)

Answers

Step-by-step explanation:

I think u want this... hope u have great day.............

Answer:

I have made it in above picture

it is option A

What is pi/4 a reference angle for

Answers

is it multiple choice

Solve the equation 3 (p-1) = 2p – 11.

Answers

Answer:

p = - 8

Step-by-step explanation:

3 (p - 1) = 2p - 11

3p - 3 = 2p - 11

3p - 2p = -11 + 3

p = -8

Answer:

p = - 8

Step-by-step explanation:

Given

3(p - 1) = 2p - 11 ← distribute parenthesis on left side

3p - 3 = 2p - 11 ( subtract 2p from both sides )

p - 3 = - 11 ( add 3 to both sides )

p = - 8

A rectangular room is 3 meters longer than it is wide, and its perimeter is 26 meters. Find the dimension of the room. The length is : meters and the width is meters.

Answers

Perimeter is the sum of all 4 walls.

Divide the perimeter in half for the total of the width  + the length:

26/2 = 13 meters

Subtract the difference in length:

13 - 3 = 10

Divide by 2 walls:

10/2 = 5

The width is 5 metes.

The length is the 5 metes + the 3 meter difference = 5 +3 = 8 meters.

The length is 8 meters and the width is 5 meters.

4n-16=6 I need to solve this

Answers

the answer is= n= 11/2 and in decimal it’s n=5.5
Explanation:
You first move the constant to the right
4n=16+6 you then calculate which will be 4n=22 and then you divide both sides

3+2x = 41

Need help
Show work

Answers

Answer:

x=16

Step-by-step explanation:

when solving for a variable, get the variables to one side of the equation and the numbers to the other side.

3+2x=41

*minus 3 from both sides of the equation to get rid of the number on the side of variables of the equation*

2x=38

to get one variable alone, divide the whole equation by 2

x=16

Ok so I did it on my paper and that is wrong but I’m not sure

My point exactly in algebra.

Answers

lol this is so true ( i just want points)

I dont know which one!! Please help!! ​

Answers

Answer:

B C

Step-by-step explanation:

it's b and c

Which rule explains why these triangles are congruent?

Answers

Answer:

ASA prove it's congruent

as 2 angles are equal and a side between of them is same for both triangles.

boys to girls in the ratio 4:5 if there are 95 girls how many boys are there

Answers

Step-by-step explanation:

4/9× 95answer is 42

remainder 2

i need help with this​

Answers

Answer:

a- 2 8/27

Step-by-step explanation:

Answer:

[tex]2\frac{8}{27}[/tex]

Step-by-step explanation:

– 6 x + 4 < 29 answer?

Answers

Answer:

its 847>×+18 enjoy hope it work

Find the missing Length. The triangle in each pair are similar

Answers

Answer:

45

Step-by-step explanation:

This might not work every time but it does this time.

99(25/55)=45

45

HELP PLEASE I NEED ANSWER ASAP!

Answers

Answer:

86+18[tex]\sqrt{2}[/tex]

Step-by-step explanation:

Use the properties of 45-45-90 triangles to get a side length of 18 for the 2 legs of the isosceles triangle. Then add 43+18, which is the shorter length of the rectangle, +25, which is the longer edge, +18[tex]\sqrt{2}[/tex]. The answer is now 86+18[tex]\sqrt{2}[/tex].

Answer:

111.4556

Step-by-step explanation:

Perimeter = 18 + 25 + 18√2 + 43

Perimeter = 86 + 18√2

Perimeter = 86 + 18(1.4142)

Perimeter = 86 + 25.4556

Perimeter = 111.4556

please do all of these :)

Answers

A SCATTER PLOT IS JUST A DOT PLOT

help whoever ever get s it 5 stars and brainless ​

Answers

Answer:

3/4

Step-by-step explanation:

9/12 which can be simplified by dividing by 3 (the common factor) to get 3/4.

Please someone help answer correctly !!!!!!!!!!!! Will mark Brianliest !!!!!!!!!!!!

Answers

Answer:

z = 44

Step-by-step explanation:

180 - (44+52) = 180 - 96 = 84º

180 - 84 = 96º

180 - (96 + 40) = z

     180 - 136 = z

     z = 44

PLEASE PLEASE HELP
Solve. Be sure to write your solution as a solution set using braces {}.

(y + 4)(3y - 5) = 0

Answers

Answer:

Step-by-step explanation:

Let's solve your equation step-by-step.

(y+4)(3y−5)=0

Step 1: Simplify both sides of the equation.

3y2+7y−20=0

Step 2: Factor left side of equation.

(3y−5)(y+4)=0

Step 3: Set factors equal to 0.

3y−5=0 or y+4=0

y=5 /3

or y=−4

The track club runs the 50-yard dash. How many inches do they run?

Answers

Answer:

1800in

Step-by-step explanation:

3ft=1yd

3x50=150ft

12in=1ft

12x150=1800in

Answer:

Step-by-step explanation:

1 yard = 36 inches

50 yards = 36 x 50 = 1800 inches

2. Solve x - 19 <81. Then graph the solution.

Answers

Answer:

x<100

Step-by-step explanation:

The given equation is :

x-19<81

Adding 19 to both sides of the equation.

x-19+19<81+19

x<100

It means the solution of the given equation is less than 100. Hence, the attached figure shows the graph for the given equation.

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