Helen draws a random circle.
She then measures its diameter and circumference.
She gets a circumference, C, of 405 mm correct to 3 significant figures.
She gets a diameter, d, of 130 mm correct to 2 significant figures.
Helen wants to find the value of it using the formula n =
1 =
Calculate the lower bound and upper bound for Helen's value of .
Give your answers correct to 3 decimal places.

Answers

Answer 1

Answer:

lower bound: 2.996

upper bound: 3.244

Step-by-step explanation:

Answer 2

The value that Helen wants to use is Pi = C/D. The lower bound value is 3.065, and the upper bound for Helen's value is 3.165.

What is circumference?

The circumference is the perimeter of the circle.

Given, the circumference, C, at 405 mm to three significant numbers.

She correctly estimates the diameter, d, to be 130 mm to two significant numbers.

Helen wants to find the value of Pi using the formula pi=C/D

We have, the circumference of the circle = C = 405 mm

The diameter of the circle = d = 130 mm

Pi = C/D

= 405 mm / 130 mm

= 405 / 130

= 3.115

3.115, measured to the nearest 0.1.

The degree of accuracy is nearest 0.1.

0.1/2 = 0.05

Upper bound = 3.115 + 0.05 = 3.165

Lower bound = 3.115 - 0.05 = 3.065

Therefore, the lower bound and upper bound for Helen's value are 3.165, and 3.065.

To learn more about circumference, refer to the below link:

https://brainly.com/question/14717074

#SPJ5

Related Questions

Theo practices yoga for the same amount of time every day. After he practices yoga for 18 min on Saturday, he has finished 24% of his daily yoga practice. How many more minutes does Theo practice yoga on Saturday? Show your work.

Answers

Answer:

Theo practices yoga on Saturday 57 more minutes.

Step-by-step explanation:

With the information provided, you can find the total amount of minutes Theo practices yoga that would represent 100% using a rule of three considering that you know that 24% of his daily yoga practice is equal to 18 minutes:

24% → 18

100% → x

x=(100*18)/24=75

As you need to find how many more minutes does Theo practice yoga on Saturday, you have to subtract 18 minutes that is the amount he has already spent practicing yoga from 75 that is the total amount of minutes he practices yoga:

75-18=57

According to this, Theo practices yoga on Saturday 57 more minutes.

What is the probability of landing on red and rolling a number greater than 2?

Answers

Answer:

the probability of rolling a number greater than 2 is 2/3

Step-by-step explanation:

because 3 4 5 and 6 are greater than two we have 4 numbers greater than 2 so 4/6 is 2/3 when simplified

PLZ HELP ME PLZ HELP plssssssssss

Answers

Answer:

x = 3 x = 5

Step-by-step explanation:

1 - (-3) 2+ (-3) - 5

Answers

Answer:

1 - (-3) X 2 + (-3) - 5 = ?

To find your answer, first group the same number if there are any. In this situation, there are two -3.

You can take your calculator if you have one and input your information.

In the end, you should get -1 as your final answer.

Step-by-step explanation:

Hope that this helps! :)

Have a great rest of your day/night!

7+2x /3 = 5
Thx.......................

Answers

Answer:

x= -3

Step-by-step explanation:

7+[tex]\frac{2x}{3}[/tex] = 5

21+2x=15

2x=-6

x= -3

Answer:

x=-3

Step-by-step explanation:

Use PEMDAS to solve. Balance both sides by subtracting 7 from both sides. Then, multiply both sides by 3. Finally, divide the result by 2 to isolate x and you end up with x=-3

Please help I do not know how to do this

Answers

Answer:

About 33% of students prefer chocolate icecream

Step-by-step explanation:

The actual percentage would be 35%, but none of the other answers are close enough to correct, so I'd have to say the bottom one.

hope this helps you :/

Marlin and his brother are going to Antonio, TX next week. They figure that they will drive 792 miles round trip. If their car gets 25 miles per gallon and the current cost of gasoline is $2.35, what will the gas for their trip cost?

a.$74.45

b.$58.75

c.$31.68

d.$66.75

Answers

Answer: a. $74.45

Step-by-step explanation: good luck

It’s $74.45. step by step:I hope it’s right

What is the area, in square feet, of the trapezoid below?

Answers

Answer:

28.2 ft²

Step-by-step explanation:

Select the TRUE statement

Answers

Answer:

Step-by-step explanation:

Brainliest?

Answer:

the answer to your question is B

The list shows the value of five accessories that Mary purchased for her cell phone. 29, 15, 22, 52, 38 What is the mean absolute deviation of the numbers in the list?

Answers

Answer:

11.04

Step-by-step explanation:

Given the data:

29, 15, 22, 52, 38

The mean absolute deviation :

Mean, m = Σx / n

n = sample size = 5

29 + 15 + 22 + 52 + 38 = 156

Mean = 156 / 5 = 31.2

Mean absolute deviation (MAD):

Σ|x - m| / n

(|29 - 31.2| + |15 - 31.2| + |22 - 31.2| + |52 - 31.2| + |38 - 31.2|) / 5

(2.2 + 16.2 + 9.2 + 20.8 + 6.8) / 5

55.2 / 5

= 11.04

3 feet= ? inches. what is it? TwT

Answers

Answer:

36 inches

Step-by-step explanation:

Answer is...

3ft → 36in

Step-by-step explanation:

To convert feet into inches, you multiply how much feet by 12.

That being said, we can multiply 3 by 12 to get how many inches 3 feet equals.

3 × 12 = 36

Hence, 36in is the answer.

Let me know of any question or concerns by commenting below.

What is the missing value in the proportion 5/8 = k/16?

Answers

5/8 = 10/16

The missing value is: 10

0.625 = k/16
K= 0.625 * 16
K=10

A circle is given with points A, B, C, and D clockwise upon it. All points are joined by line segments, and ∡BCD=62°. What is ∡BAD?

A. 124°

B. 62°

C. 28°

D. 118°

Answers

Answer:

yo did anyone have the answer

Step-by-step explanation:

Help ASAP please
Which expression would be easier to simplify if you used the associative
property to change the grouping?
A. 67+ [+(-)]
B. (70 +30) + 72
C. [-12 + (-5)] + 36
D. (21 + (-14)] + (-53)
SUBMIT

Answers

Answer is a is simple

prove the above question and i will give you....

Answers

Answer:

see explanation

Step-by-step explanation:

Using the identity

cos²A - sin²B = cos(A + B) . cos(A - B)

Here A = [tex]\frac{\pi }{8}[/tex] + [tex]\frac{A}{2}[/tex] , B = [tex]\frac{\pi }{8}[/tex] - [tex]\frac{A}{2}[/tex]

Consider the left side

cos²([tex]\frac{\pi }{8}[/tex] + [tex]\frac{A}{2}[/tex] ) - sin²( [tex]\frac{\pi }{8}[/tex] - [tex]\frac{A}{2}[/tex] )

= cos([tex]\frac{\pi }{8}[/tex] + [tex]\frac{A}{2}[/tex] + [tex]\frac{\pi }{8}[/tex] - [tex]\frac{A}{2}[/tex] ) × cos([tex]\frac{\pi }{8}[/tex] + [tex]\frac{A}{2}[/tex] - [tex]\frac{\pi }{8}[/tex] + [tex]\frac{A}{2}[/tex] )

= cos ([tex]\frac{\pi }{4}[/tex] ) × cos ( A)

= [tex]\frac{1}{\sqrt{2} }[/tex] cosA

= right side , thus proven

Need help with this question asap please I would really appreciate it

Answers

Answer:

Step-by-step explanation:

we know that the angle is less than 90, so there is only one choice for that , the 75° choice. that also seems about right.

You roll a fair
6
66-sided die.
What is
P(roll greater than 4
)
P(roll greater than 4)start text, P, left parenthesis, r, o, l, l, space, g, r, e, a, t, e, r, space, t, h, a, n, space, 4, end text, right parenthesis?
If necessary, round your answer to
2
22 decimal places.

Answers

Answer:

Step-by-step explanation:

1/3 Now that is the answer

Answer: 0

Step-by-step explanation: 0

HELPPPPPPPPPPP
1. Shown are the final scores for Norm Duke in the past eight bowling tournaments.
299, 281, 285, 269, 280, 269, 286, 287

Part A: What is the mean absolute deviation of Norm Duke’s scores?

A.
7.50

B.
7.00

C.
7.25

D.
6.75

Part B: Based on the mean absolute deviation from Part A, who has been the more consistent bowler if Ryan Shafer has a mean absolute deviation of 7?

A.
Norm Duke has been more consistent because his mean absolute deviation is greater than Ryan Shafer’s.

B.
Ryan Shafer has been more consistent because his mean absolute deviation is less than Norm Duke’s.

C.
Ryan Shafer has been more consistent because his mean absolute deviation is greater than Norm Duke’s.

D.
Norm Duke has been more consistent because his mean absolute deviation is less than Ryan Shafer’s.

Answers

Answer:

Part A

C. 7.25

Part B

B. Ryan Shafer has been more consistent because his mean absolute deviation is less than Norm Duke’s.

Step-by-step explanation:

Given data:

299, 281, 285, 269, 280, 269, 286, 287Part A

Find the mean of the data above:

(299 + 281 + 285 + 269 + 280 + 269 + 286 + 287)/8 = 282

Find absolute deviations, an absolute value of the difference of data and the mean:

299 - 282 = 17 ⇒ 17 281 - 282 = -1 ⇒ 1285 - 282 = 3 ⇒ 3269 - 282 = -13 ⇒ 13280 - 282 = 2 ⇒ 2269 - 282 = -13 ⇒ 13286 - 282 = 4 ⇒ 4287 - 282 = 5 ⇒ 5

Find mean absolute deviation:

(17 + 1 + 3 + 13 + 2 + 13 + 4 + 5)/8 = 7.25

Correct choice is C

Part B

y -k = m(x -h) . . . . . . line with slope m through point (h, k)

The first point in the table is (x, y) = (-20, -268), so the equation with these filled in is ...

y -(-268) = m(x -(-20))

y +268 = m(x +20) . . . . . . matches F or H

We can see that the values of y change by a lot more than the values of x. That means the slope is a lot more than 1. This observation eliminates choice F, so we are left with ...

H. y +268 = 12(x +20)

Answer:

ok ummm

Step-by-step explanation:

PLEASE HELP!! Find the missing side of this right triangle
X
8
16
x=[?]

Answers

Answer:

The square root of 192

Step-by-step explanation:

It's just the Pythagoras theorem p much

The square foot is 192

A cylinder has a height of 10 millimeters and a radius of 10 millimeters. What is its volume? Use ≈ 3.14 and round your answer to the nearest hundredth.

Answers

Answer:

3141.59

Step-by-step explanation:

A trillion frozen comets are orbiting the sun in a far off region called the __________ cloud.

Answers

Answer:

The Oort Cloud

Step-by-step explanation:

The Oort Cloud is a predicted collection of icy objects farther away than everything else in the solar system.

Hope this helped!!!

June walked 6 3/4 feet today, and Julio Walked 4 1/2 feet. How many times the length of Julio's walk was June's walk?

Answers

Answer:

1 1/2

Step-by-step explanation:

6 3/4 ÷ 4 1/2

= 27/4 ÷ 9/2

= 27/4 × 2/9

= 3/2

= 1 1/2

Giving brainlist to whoever answers

Answers

Answer: B is 44 degrees.

Step-by-step explanation:

(6x+22)=(7x+16)=90.

x=4

(7(4)+16)=44

Please answer help asap

Answers

Answer:

[tex]∠ACB=40°[/tex]

Step-by-step explanation:

Given:-

[tex]∠APB=80°[/tex]

According to question:-

[tex]=>∠APB= 2×∠ACB[/tex]

[In Circle, the angle subtend at the centre is double angle subtend at the circumference.]

[tex]=>80° = 2× ∠ACB[/tex]

[tex]=>∠ACB=\frac{80°}{2}[/tex]

[tex]=>∠ACB=40°[/tex]

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