f a car travels 400 m in 20 s, how fast is it going?

Answers

Answer 1
400/20
20m/s
..............................
Answer 2

Answer:

20m/s

Step-by-step explanation:

Given, s=400m

t=20s

Required, v=?

v=s/t

=400m/20s

=20m/s


Related Questions

11.) Is the equation below linear or nonlinear?

Y=9x-5

Answers

Answer:

liner

Step-by-step explanation:


Which property is illustrated by the statement 6 X 4=4 X 6?

Answers

Answer:

Commutative property

Step-by-step explanation:

HELP PLEASEEEE IM BEGGING YOU

Answers

Answer:

40

3

9

70

6

7

10

2

42

8

Step-by-step explanation:

let's hope i didn't read naything wrong

The personnel files of all eight employees at the Pawnee location of Acme Carpet Cleaners Inc. revealed that during the last six-month period they lost the following number of days due to illness:
3 1 0 0 2 11 5 3

All eight employees during the same period at the Chickpee location of Acme Carpets revealed they lost the following number of days due to illness:
3 6 8 4 4 5 3 1

a. Calculate the range, mean and mean deviations for the Pawnee location and the Chickpee location. (Round mean and mean deviation to 2 decimal places.) Pawnee location Chickpee location Range Mean
b. Based on the sample data, which location has fewer lost days?
c. Based on the sample data, which location has less variation?

Answers

Answer:

a) For Pawnee:

Range = 11, Mean = 3.13, Mean deviation = 2.44

For Chickpee:

Range =  7, Mean = 4.25, Mean deviation = 1.59

b) Pawnee Location has fewer lost days.

c) variation of the Chickpee is less than Pawnee location

Step-by-step explanation:

Data given:

For Pawnee:

3 1 0 0 2 11 5 3

Max = 11

Min = 0

Range = Max - Min

Range = 11-0 = 11

Range = 11

For Chickpee:

3 6 8 4 4 5 3 1

Max = 8

Min = 1

Range = Max - Min

Range = 8 - 1

Range = 7

For mean of Pawnee:

Mean = (3 + 1 + 0 + 0 + 2 + 11 + 5 + 3)/8

Mean = 25/8

Mean = 3.125

For mean deviation, we find the difference from the mean of each point.

Note: all the negative values will be taken as 0.

Differences from the mean of each point =

(3-3.13)=0.13, (1-3.31) = 2.13 ,

(0-3.13)=0, (0-3.13)=3.13,

(2-3.13)=1.13, (11-3.13)=7.87,

(5-3.13)=1.87, (3-3.13)=0.13

So, our differences are:

(0.13, 2.13, 0, 3.13, 1.13, 7.87, 1.87, 0.13 )

Mean deviation =  Sum of all differences/8

Mean deviation = (0.13+2.13+3.13+3.13+ 1.13+ 7.87+ 1.87+ 0.13)/8

Mean deviation = 2.44

For mean of Chickpee:

Mean = (3+6+8+4+4+5+3+1)/8

Mean = 34/8

Mean = 4.25

Similarly, we need to find mean deviation for Chickpee, for that we need to find the differences first as done above for Pawnee.

Note: all the negative values will be taken as 0

Differences from the mean:

(3-4.25) = 1.25, (6-4.25) =1.75,

(8-4.25) = 3.75, (4-4.25)=0.25,

(4-4.25)=0.25, (5-4.25)= 0.75,

(3-4.25)=1.25, (1-4.25) =3.25

So, the differences are:

Differences = (1.25,1.75,3.75,0.25,0.25,0.75,1.25,3.25)

Mean deviation = (1.25+ 1.75+ 3.75+ 0.25+ 0.25+ 0.75+ 1.25+ 3.25)/8

Mean deviation = 1.59

b) which location has fewer lost days:

This can be found out by the total number of days of Pawnee and chickpee.

Pawnee = Sum of values = (3 + 1 + 0 + 0 + 2 + 11 + 5 + 3) = 25 days

Chickpee = Sum of values = (3+6+8+4+4+5+3+1) = 34 days

Hence, Pawnee Location has fewer lost days.

C) which location has less variation?

Formula for variation = ∑([tex]\frac{x^{2} }{8}[/tex]) - ([tex]mean^{2}[/tex])

where x = values of the set.

For Pawnee:

[tex]mean^{2}[/tex] = [tex]3.13^{2}[/tex] = 9.8

Sum of square of all the data points of Pawnee = 169

Variation = 169/8 - 98 = 11.325

Similarly,

For Chickpee:

[tex]mean^{2}[/tex]  = [tex]4.25^{2}[/tex] = 18.06

Sum of square of all the data points of Chickpee = 176

Variation = 176/8 - 18.06

Variation = 22-18.06

Variation = 4

Hence, variation of the Chickpee is less than Pawnee location

t/(-11) = 11 what does t =

Answers

Answer:

t=-121 is the correct answer

Solve
for x
2(2x + 1) -10=4
Help please and thank you

Answers

Answer: 3

Distribute

Subtract the numbers

Simplify

HELP ASAP HELP NEEDED WILL MARK BRAINIEST

Answers

Answer:

No

Step-by-step explanation:

The height of the chair can be represented as a function of the height of table, if there is a constant variation between both heights. That is as one height increases, the other height decreases at the same proportion.

From the table, as the table height increases from 71 to 72 to 74 to 75, the chair height increases from 42 to 43 to 44 to 46. There is a direct variation but it is not constant. From 71 to 72, the height of table increases by 1 cm but from 74 to 75, the height increases by 2 cm.

Hence the height of the chair can not be represented as a function of the height of table

Matt paid $450 in interest on a 15 month note for
$5600. Find the rate of interest paid.

Answers

Answer:

The rate is 6.43%

Step-by-step explanation:

Given

[tex]I = 450[/tex] --Interest

[tex]P = 5600[/tex] -- Principal

[tex]T= 15\ months[/tex] --Time

Required

Determine the rate

Using simple interest formula:

[tex]I = PRT[/tex]

Make R the subject

[tex]R = \frac{I}{PT}[/tex]

Convert time to years

[tex]T= 15\ months[/tex]

[tex]T =\frac{15}{12}\ years[/tex]

[tex]T =1.25\ years[/tex]

Substitute values for I, P and T

[tex]R = \frac{450}{5600*1.25}[/tex]

[tex]R = \frac{450}{7000}[/tex]

[tex]R = 0.0643[/tex]

Convert to percentage

[tex]R = 0.0643*100\%[/tex]

[tex]R = 6.43\%[/tex]

Can somebody show me how to do this?

Answers

Answer: = 4x − 5x − 1 Hope this helped

Step-by-step explanation:

One quarter of my weekly allowance is $1500.

How much do I collect for allowance each year?

show working please​

Answers

Answer:

312,000

Step-by-step explanation:

1500×4 (since the 1500 is only a quarter)

6,000 per week

6,000x52(since 52 weeks in a year)

312,000

1) holy guacamole that’s a lot of money

2) If $1500 is 1/4 of your weekly allowance than your total weekly allowance would be 1500 x 4 which is $6000

There’s 52 weeks in a year
6000 x 52= 312,000

So your yearly allowance is $312,000

Is this positive trend or negative trend or no trend​

Answers

Answer:

No trend

Step-by-step explanation:

In this scatter graph, all of the points are just scattered over a wide range. There's no real trend/correlation, so there's no trend.

Answer:

the answer is no trend bc ..

Step-by-step explanation:

the points are scatters and aren't in a specific pattern

Estimate the sum of 872 and 121 by rounding both values to the nearest hundred. What is the best estimate of the sum? 700 800 1,000 1,100

Answers

The answer is 1000

Step-by-step explanation:

Because 872 rounded is 900 and 121 rounded is 100 add 900 and 100 it's a thousand.

Jordan bikes at a speed of 8 2/3 mph. How many miles will he bike in:

3 hours 6 minutes?

Answers

Answer:

He will bike 26.87 miles.

Step-by-step explanation:

Given:

Jordan bikes at a speed of 8 2/3 mph.

Now, to find the distance he will bike in 3 hours and 6 minutes.

Speed =  

Time = 3 hours and 6 minutes

        =  

As, 60 minutes = 1 hour.

        =

Find the value of 3_5

Answers

Answer:

The answer is 243.

Step-by-step explanation:

[tex] {3}^{5} \\ 3 \times 3 \times 3 \times 3 \times 3 \\ 9 \times 3 \times 3 \times 3 \\ 27 \times 3 \times 3 \\ 81 \times 3 \\ 243[/tex]

What is the length of the segment shown below. Round your answer to the nearest hundredth. (2,5) (-4,-1)

Answers

Answer:

Step-by-step explanation:

use the distance formula Emily  P1=(x1,y1)=(2,5) P2=(x2,y2)=(-4,-1)

d = [tex]\sqrt{(x2-x1)^{2}+ (y2-y1)^{2} }[/tex]

d = [tex]\sqrt{6^{2}+ 6^{2} }[/tex]

d = 8.48528

d  = 8.49

What is the pow of a
4.5 x 10-3 M OH solution?

Answers

Answer:

p O H = 2.35

Step-by-step explanation:

6 12 5 7 7 3 9 mean median range

Answers

Answer: Mean:7 Median 7 Range:9

Step-by-step explanation:

Your grandfather gave you $13.50 with which to buy a present. This covered 5/6 of the cost. How much did the present cost?

Answers

Answer:

Step-by-step explanation:

5/6 x = 13.50             Multiply both sides by 6

5x = 13.50 * 6

5x = 81                       Divide by 5

x = 81/5

x = 16.2

PLS HELP BRAINLIEST AND EXTRA POINTS !
What is the ratio of the total coins in Andrew's coin jar to the total coins in Staci's coin jar?

A. 98:51

B. 49:78

C. 1:1

D. 51:98

Answers

Answer:

D

Step-by-step explanation:

4 + 12 + 18 + 68=  102/2 51

40 + 28 + 52 + 76= 196/2 98

51:98

D. 51.98....hope this helps

Help me out here pleaseeeeeee

Answers

Answer:

option C

Step-by-step explanation:

(6+3)= 9

9 × 4= 36

36-2= 34

hope it helps! please make me brainliest..

Thank you! Have a good day ahead!

Answer:

(6+3)*4-2

Step-by-step explanation:

(6+3)*4-2

9*4-2

36-2

34

PEMDAS

Parenthesis

Exponents

Multiply

Divide

Add

Subtract

simplify-18z3 +(-15z3)​

Answers

Answer:

-18z3+(-15z3)

-18z3-15z3

-33z6

So can someone just kinda do these

Answers

Answer:

1.) -5/4

2.) 2

3.) 7/3

4.) 4

5.) -6

6.) -1

7.) 5/3

8.) -4

9.) 2

Step-by-step explanation:

this is what i got i hope they are all right

slope formula: (y2 - y1) / (x2 - x1)

If the diameter of a circle is 7, what is the circumference of that circle? Show
your work and label your answer.

Answers

Answer:

21.98

Step-by-step explanation:

I found my answer by multiplying the given number by pi. Pi is 3.14 or 22/7. So, 7x3.14=21.98

Make sure to mark this brainliest! :D

When is subtraction always the first operation done in an expression?

A Never
B When it follows addition in an expression.
C When it is the first operation in an expression, from left to right.
D When it is in parentheses in an expression.

Answers

Answer:

b

Step-by-step explanation:

t

C

The order of operations tells us the correct steps for solving a math problem.
PEMDAS
1. Parentheses
2. Exponents
3. Multiplication
4. Division
5. Addition
6. Subtract
Subtraction is the last step, so if none of the 5 steps before it are in the equation, then that is when you will do subtraction first.

Can someone help me find the complete square please?

Answers

Answer:

x= +-6 squareroot 2-10

Step-by-step explanation:

[tex]x=+-6\sqrt{2} -10[/tex]

Julio tested the point (4, –2) to see whether it is a solution to this system of equations.

–3x – 2y = –8,
y = 2x – 5

His work is shown below.

Negative 3 (4) minus 2 (negative 2) = negative 8. Negative 12 + 4 = negative 8. Negative 8 = negative 8. Therefore, (4, negative 2) is a solution to the system.

Did Julio verify the solution?
No. He substituted 4 and –2 for the wrong variables.
No. He did not check the point in the second equation.
No. He simplified the equation incorrectly.
Yes. He verified that (4, –2) is a solution to the system of equations.

Answers

Answer:

the answer is B on edge

Step-by-step explanation:

B. No. He did not check the point in the second equation

can i get brainly so i can rank up?

Answer:

Like I said B

Step-by-step explanation:

For the right triangle find the missing length. Round your answer
to the nearest tenth.

Answers

Answer:

w = 5

Step-by-step explanation:

In the given right triangle, by trigonometric ratio, we have:

[tex] \tan \: 60 \degree = \frac{5 \sqrt{3} }{w} \\ \\ \sqrt{3} = \frac{5\sqrt{3}}{w} \\ \\ w = \frac{5 \cancel {\sqrt{3}} }{ \cancel {\sqrt{3}} } \\ \\ w = 5[/tex]

Given that R= 7x + 7y
Find r when y = 2 and R=8

find x
Give your answer as a fraction in its simplest form.​

Answers

Answer:

Step-by-step explanation:

564/5

If (-x^2 + y^2) is subtracted from (x^2 + y^2), the difference is

A.2x^2
B.0
C. -2x^2
D. —2x^2– 2y^2

Answers

Answer:

If [tex](-x^2 + y^2)[/tex] is subtracted from [tex](x^2 + y^2)[/tex], the difference is: [tex]\mathbf{2x^2}[/tex]

Option A is correct option.

Step-by-step explanation:

If [tex](-x^2 + y^2)[/tex] is subtracted from [tex](x^2 + y^2)[/tex], we need to find the difference.

When finding the difference the term after from comes first.

We can write:

[tex](x^2 + y^2)-(-x^2 + y^2)[/tex]

Now finding difference:

Multiply minus sign with terms inside the bracket

[tex]=x^2 + y^2+x^2 - y^2[/tex]

Now combine the like terms

[tex]x^2 +x^2+ y^2 - y^2\\=2x^2+0\\=2x^2[/tex]

So, If [tex](-x^2 + y^2)[/tex] is subtracted from [tex](x^2 + y^2)[/tex], the difference is: [tex]\mathbf{2x^2}[/tex]

Option A is correct option.

Contemporain management

Answers

Answer:

This term denotes the modern techniques to administrating people in business organizations, government bodies, or non-profit organizations. The "contemporary" indicate the relation to the present and up-to-date trends in the sphere of management. It means that the person who is involved in contemporary management should be aware of the recent variations of the management theory and implement the changes in their organizations. Modern managers should be resilient and adaptive so that they are ready to incorporate the newest developments in practice.

Step-by-step explanation:

Other than that I don't know what you are asking for.

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