Imagine you measure the length of 15 cars, and then sum that length, in order to see how big a parking lot must be. You do this in two different ways. First, you use the same bad tape measure for each car so that your measurement is always 1 cm too long, or always too short, for all of the measurements. For your second attempt, you use a different bad tape measure for each car, so there is an uncertainty of plus or minus 1cm in each measurement. What is your estimate of the total error in the sum of all the car lengths in these two cases

Answers

Answer 1

Answer:

± 15 cm  

Step-by-step explanation:

In the first case, since the measurement is 1 cm too long or too short, the error is ± 1 cm.

In the second case, the uncertainty or error is also ± 1 cm.

Now, since there are 15 cars, and there is an error of ± 1 cm in each measurement, by the error formula the total error in the sum of both cases is 15 × ±1 cm = ± 15 cm  

So, the total error in both cases is ± 15 cm.


Related Questions


I need help with this If right

Answers

Answer:

14° I think sorry if its wrong this was quick one

Answer:

[tex]10^0[/tex]

Step-by-step explanation:

the sum of all angles should add to a straight line, a straight line has an angle of 180 so add 92 and 78 subtracting the total from 180

[tex]92+78=170\\180-170=10\\answer =10^0[/tex]

After spending many hours studying for your math class, you decide to reward yourself with a case of cream soda. Unfortunately, Corner Market only had a warm case left. You buy several bags of ice and decide to chill it at home. When you get home, the temperature of the soda is 76° F, and you proceed to pack it in ice. After 10 minutes, the temperature cooled to 70° F. If cream soda is best served at 60° F or cooler, how much longer must you wait to enjoy your chilled cream soda?

Answers

Answer:About sixteen minutes.

Step-by-step explanation: After you find out that Ten minutes is six degrees you divide ten by six and get 1.666. Then you multiply that by the time remaining and get 16 minutes rounded. or seventeen if you are specific.

Here is a circle.
The diameter of the circle is 9 cm.
Work out the circumference of this circle.
Give your answer correct to 3 significant figures.
12.11%2S:

Answers

Radius is half d so r us 4.5
Formula is 2x pi x r
So 28.3 to 3 s.f.

solve for f(-1), f(x)=-3+3, f(-1)=?

Answers

Answer:

0

Step-by-step explanation:

what is 20:10 in its simplest

form

Answers

Answer:

2/1

Step-by-step explanation:

20/10 devided by 10 to both numbers

Find the output, g, when the input, r, is 4.

g=25−3r

plzzzzzz help me i need to finish

Answers

Answer: g = 13 / Thats the output

Step-by-step explanation:

g = 25 - 3r

Its telling you the r is 4 since its the input.

g = 25 - 3 ( 4 )   see!! just plug in the number

Now Solve

g = 25 - 12

g = 13

Answer:

g = 13

Step-by-step explanation:

since r = 4, you make the equation :

g=25-3(4)

first you multiply 3 and 4 and you get 12

g=25-12

and 25 - 12 is 13 which equals :

g = 13

Brainiest for the right answers...

Answers

Answer:

9. B 10. C 11. B 12. B

Step-by-step explanation:

Help me please and explain it me to please

Answers

6 and 5 because they are on a straight line and add to 180

Please hurry; Rajiv bought a rare stamp for $125. A function that models the value of Rajiv’s after t years is v(t) = 125 (1.05)t . What is the value of Rajiv’s stamp after 20 years?

a $131.25
b $331.66
c $2,625.00
d $3316.62

Answers

Answer:

C.

Step-by-step explanation:

The answer is C !!! :)

The area of a bathroom floor measures 6 feet by 9 feet and each custom tile that makes up the flooring is 1 1/2 square feet. How many tiles are needed to cover the floor?
pls help me

Answers

Answer:

Around 9.8 tiles

Step-by-step explanation:

The formula is x = (6*9)/5.5.

Does a hexagon contain rays

Answers

Answer:

no

Step-by-step explanation:

30 kilograms of beans costs $5. How many kilograms of beans can you buy for $20?

Answers

Answer:

120 kg

the kilograms of beans which can by for $20 are

30*(20/5) = 30.4 = 120 (kg)

Answer: 120 kilograms

Step-by-step explanation:

We can buy 30 kilograms of beans for $5 dollars. We need to find how many kilograms of beans we can buy for $20.

The first step is to divide 20 by 5. Then, using the quotient, we can multiply it by 30 to see how many kilograms of beans we can buy for $20.

20 ÷ 5 = 4.

4 x 30 = 120.

Therefore, we can buy 120 kilograms of beans for $20.

Cool beans ;)

what is a scaled copy?

Answers

Answer:

A scale copy of a figure is a figure that is geometrically similar to the original figure.

Step-by-step explanation:

Hope this makes sense.

7)
2 1
Please help giving Brainly

Answers

Answer:

You should use MathPapa.

Step-by-step explanation:

?????????????????????

Answers

Answer:

0 and 4

Step-by-step explanation:

13. Given f(x) = X – 3 and g(x) = 4x, find f(g(x)).
A. 4x - 3
B. 4x - 12
C. 5x - 3
D. 3x - 3

Answers

Step-by-step explanation:

f(g(x))

= f(4x)

= (4x) - 3. (A)

Step-by-step explanation:

option A is the correct answer according to my opinion .

plz mark my answer as brainlist if you find it useful.

I need help with this

Answers

Answer:

what is your cam qlty

Step-by-step explanation:

Answer:

22ft^2

132 ft^3

Step-by-step explanation:

Sonia saves
3
11 of her monthly income for retirement. If Sonia earned ​$2200 last​ month, how much did she save for​ retirement?

Answers

Answer:

Sonia saved 1889 from her last month's pay

Step-by-step explanation:

Sonia saved $594 for retirement

Do anyone knows how to do this?


X= -2

Answers

Answer:

nustiu scz

Step-by-step explanation:

sorry its too difficult

5/6x+2/3x+4=7

What is x and I REALLY REALLY NEED AN EXPLANATION

Answers

5/6x + 2/3x + 4 = 7

5/6x + 2/3x = 9/6x

9/6x + 4 = 7

9/6x + 4 - 4 = 7 - 4

9/6x = 3

9/6 in decimal form is 1.5 thus

1.5x / 1.5 = 3/1.5

x = 2

Surface Area of 20,70,90 Will give brainliest to correct answer

Answers

Answer:

19,000 cm

Step-by-step explanation:

Hope this helps

Answer:

19000 square units

Step-by-step explanation:

It is assumed the rectangular prism with dimensions of 20, 70 and 90

Surface are is calculated by the formula:

SA = 2(lw + lh + wh)

Substitute values and find the value:

SA = 2(20*70 + 20*90 + 70*90) = 19000 square units

Intercepts from a graph
Determine the intercepts of the line.
y-intercept:
x-intercept:
y
0.4+
0.2
-1.4-1.2
0,2
-0.8 -0.6 -0.4-0.2
-0.21
0.6+
-0.81
1.2

Answers

Answer:

Y-intercept: (0,-0.7)

X-intercept: (-1.2,0)

Explanation:

The Y-intercept is the spot where the line crosses the Y axis (the vertical axis). This always occurs where X=0. For this problem the Y value at this point is -0.7. So, for the coordinates (X,Y) X is 0 and Y is -0.7 so it is (0,-0.7)

The X-intercept is the spot where the line crosses the X axis (the horizontal axis). This always occurs where Y=0. For this problem the X value at this point is -1.2. So, for the coordinates (X,Y) X is -1.2 and Y is 0 so it is (0,-0.7)

Three sisters are saving for a special trip . The ratio of Nora​'s savings to Helga​'s savings is 8:3 and the ratio of Helga​'s savings to ​Maurice's savings is 3:4. Together all 3 have saved ​$60. How much has each ​saved?

Answers

Answer:

X = 10.588

Y = 28.2

Z = 21.176

Step-by-step explanation:

Consider Nova savings as X

Helga is Y

Maurice is Z

As per first ratio we conclude 8X=3Y

Second ratio we conclude 3Y = 4Z

We deduce 8X = 4Z

Last sentence => X+Y+Z=60 multiple it by 3

=> 3X + 3Y + 3Z= 180 but 8X = 4Y

=> 3X + 8X + 3Z =180 => 11X + 3Z=180 multiple the equation by 4/3

44/3 X + 4Z = 240 but 4Z = 8X

=> 44/3 X + 8 X = 240

=> 68/3 X = 240

=> 68X = 720

=> X =10.588

And Y=8/3 X =28.2

And Z=3/4 Y = 21.176

The triangle below lie on the same line. Find the horizontal distance of the smaller triangle.

Answers

Answer: The answer is 2

Step-by-step explanation: I had the same question and I got the answer right

Is this expression equivalent to 1.5?

1.5 / 10

(1.5 divided by 100)

Answers

Answer:

Very False

Step-by-step explanation:

1.5 divided by 100 I can tell you is not equivalent to 1.5

Question 5 (2 points)
(07.02)
Solve log x = 4. (2 points)

a
x = 4

b
x = 40

c
x = 1,000

d
x = 10,000

Answers

Answer:

i would belive c i might be wrong

Step-by-step explanation:

Answer:

D: x=10,000

Step-by-step explanation:

There are 9 people in an office with 5 different phone lines. If all the lines begin to ring at once, how many groups of 5 people can answer these lines?

Answers

Answer:

1

Step-by-step explanation:

if it was 10 it would be 2, but it isnt. and it cant be a number with a decimal cause i would be surprised if a math problem has it where you cut people in half or portions

Due to your severe pain, the doctor tells the nurse to give you 825 mg of pain medicine every 6 hours. You also hear the nurse say that the medication comes in 250-mg tablets. How many tablets should she give you every 6 hours? (Round to tenths, if necessary.)

Answers

Answer:

3

Step-by-step explanation:

divided 825 by 250 which give you 3.3

She would have to give you 3.3 tablets.

The math is 825 divided by 250 is 3.3.

A _______
represents the leading digit in a stem-and-leaf plot.

The answers are: leaf, stem

I WILL GIVE BRAINLYEST

Answers

Answer:

The answer is the first option - leaf.

Answer:

the answer is stem.

Step-by-step explanation:

i know this because i am on the same question and there are only two answers so if the other answer was wrong it means this one has to be right.

Mona needs to photocopy a 14.5 centimeters wide by 15 centimeters long picture. She wants to enlarge the picture so that its length will be
37.5 centimeters. How wide will the enlarged picture be?
O a
38.8 cm
Ob
37 cm
ос
93.75 cm
Od
36.25 cm

Answers

Answer:

The enlarged picture will have a width of 35.8 cm

Step-by-step explanation:

We can solve this question by proportions, using rule of three.

When the length is of 15 centimeters, the width will be of 14.5 centimeters. What is the width when the length is 37 centimeters?

15 cm - 14.5 cm

37 cm - x

Applying cross multiplication

[tex]15x = 14.5*37[/tex]

[tex]x = \frac{14.5*37}{15}[/tex]

[tex]x = 35.8[/tex]

The enlarged picture will have a width of 35.8 cm

Answer:

36.25 cm

Step-by-step explanation:

37.5 divided by 15 is 2.5 then multiply 14.5 by 2.5 and your answer will be 36.25 cm.

I hope this helps the last answer you got was close but incorrect. I really hope I get brainlyiest. :)

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