Lakmini decided to measure the circumference of the Earth
using a very long tape measure. She held the tape measure
Im from the surface of the (perfectly spherical) Earth all the
way round. When she had finished her friend said that her
measurement gave too large an answer and suggested taking
off 6 m. Was her friend correct?
[Take the radius of the Earth to be 6400 km (if you need it).]

Answers

Answer 1

Answer:

Step-by-step explanation:

[tex]\Delta C=2\pi(r_2-r_1)\\ \\ \Delta C=2\pi(6400001-6400000)\\ \\ \Delta C=2\pi\\ \\ \Delta C\approx 6.283m\\ \\ \text{So taking off 6 meters is reasonable.}[/tex}


Related Questions

Write an algebraic expression for...

15 more than w

*An algebraic expression is a mathematical phrase that can contain numbers, variables (letters) and operations (+, -, x ÷)

Answers

the answer is w+ 15! hope this helps!

Jessie spent a total of 14.00 to purchase a gift and have it gift-wrapped and mailed. The cost for the postage was $2.25, and she knows the gift itself cost $9.50.

Answers

Answer:

she spent 11.75$ total

Step-by-step explanation:

9.50+2.25=11.75

GUYS HELP HELP HELP PLEASE HELP

Answers

i think it’s impossible and yeah that’s all ik but fs impossible is part of it

Help me with this!! Will mark Brainliest!!!

Answers

Answer:NO!!

Step-by-step explanation:

RS distance of 2 while TU distance of 1

Find the solution set of the inequality
8x−8≤−72.

Answers

Answer:

x≤-8

Step-by-step explanation:

When solving 8x-8≤-72, first add 8 to both sides of the inequality.

This leaves you with 8x≤-64.

Divide both sides by 8: 8x/8 and -64/8

This leaves you with x≤-8 as your solution.

First three terms of n^2+40
How many terms in the sequence are less than 100?​

Answers

Answer:

7.

Step-by-step explanation:

If N= 1, 2, 3, 4, 5, 6, or 7, the equation is still less than 100.

Are my answers for the conditional statement correct? I would just like to check them and if they're incorrect, could you let me know how to fix them? Thank you.


Statement: If I brush my teeth twice a day, then I will not get cavities.


Inverse: If I don't brush my teeth twice a day, then I will get cavities.
Truth Value: True

Converse: If I don't get cavities, then I am brushing my teeth twice a day.
Truth Value: True


Contrapositive: If I get cavities, then I am not brushing my teeth twice a day.
Truth Value: True

Answers

Statement: If p, then q

Inverse: If q, then p

Converse: If not p, then not q

Contrapositive: If not q, then not p.

We can see from the statement that p = brush teeth twice a day and q = not get cavities.

Thus:

Inverse: If I don't get cavities, then I brush my teeth twice a day. FALSE (for example, I might floss extra well instead. Brushing my teeth twice a day is not the only way to avoid cavities)

Converse: If I don't brush my teeth twice a day, then I get cavities. FALSE (for example, I might not eat a lot of sugar and thus I don't get cavities)

Contrapositive: If I get cavities, then I did not brush my teeth twice a day. TRUE

If this confuses you, try the example of p = cat and q = four legs. (i.e. the statement is If this is a cat, it has four legs). Try making the inverse, converse, and contrapositive, and see the truth of those statements.

someone pls help thank you so much if you do!!

Answers

I think that its 80% not sure tho


Use the figure to determine the measure of angle 1 if angle 5 is 60 degrees.

Answers

Answer:

the figure is missing. please provide the figure.

If you had a right triangle with legs measuring 40 yards and 100 yards long,
what would be the length of the hypotenuse? Round your answer to the
nearest yard if necessary. *
70 yd
92 yd
108 yd
146 yd

Answers

9514 1404 393

Answer:

  (c) 108 yd

Step-by-step explanation:

For hypotenuse c and legs a and b, the Pythagorean theorem tells you the relation is ...

  c² = a² +b²

Solving for c, we have ...

  c = √(a² +b²)

  c = √(40² +100²) = √(1600 +10000) = √11600

  c ≈ 107.70 . . . . yards

The length of the hypotenuse is about 108 yards.

Please help Magan recorded the grade-level and instrument of everyone in the middle school

School of Rock below.


Based on these results, express the probability that a seventh grader chosen at

random will play the guitar as a fraction in simplest form?

Answers

Answer:

[tex]Probability = \frac{11}{40}[/tex]

Step-by-step explanation:

Given

See attachment

Required

The probability that a 7th grader selected will play guitar.

From the attachment, we have:

[tex]7th\ graders =11+8+8+13[/tex]

[tex]7th\ graders =40[/tex]

7th graders that can play guitars are:

[tex]Guitars = 11[/tex]

So, the probability is:

[tex]Probability = \frac{Guitars}{7th\ graders}[/tex]

[tex]Probability = \frac{11}{40}[/tex]

If the circumference of a circle is 12.56 ft, what is the length of the radius? Use 3.14 for π.

A. 6.28 in.
B. 4.03 in.
C. 4 in.
D. 2 in.

Answers

Answer:

D - 2in

Step-by-step explanation:

i really really need your help asap due today

Answers

Answer:

25

Step-by-step explanation:

The answer is 25
Vvvv

Given that p =5, q = 2, r=4
What is the value of 7r

Answers

Answer:

28

Step-by-step explanation:

if r=4 that means that 7r= 7×r is 28

I Need help ASAP.(please )

Answers

B and D are correct
The rest are wrong, if you need a reason why please tell me
Hope this helps!

It takes Jason 30 minutes to wash the dishes, but it takes 50 minutes for his younger brother. How many minutes will it take to wash the dishes if they work together? Round your answer to the nearest hundredth if necessary.

Answers

At the 2 together and then divide by 2 to find the average (40)

Evaluate 11.3v + 10.7w when v=7 and w=8

Answers

Answer:

11.3(7)+10.7(8)=79.1+85.6

=164.7

PLEASE HELP

The graph of y = f(x) is shown below. What are all of the real solutions of
f(x) = o?

Answers

Answer:

The real solutions are : -6, -3 and 2

Step-by-step explanation:

The solutions of a functions are the input values at an output zero

Graphical wise, this can be represented by the order pairs (x, 0)

In other words, these are the points that lie on the x-axis

Examining the given graph, we can see that the points lying on the x-axis are:

(-6, 0), (-3, 0) and (2, 0)

This means that:

The real solutions of the function are:

-6, -3 and 2

Hope this helps :)

write the equation of the line pictured in standard form

Answers

Answer:

x+2y=4

Step-by-step explanation:

y=-1/2x+2 multiply both sides by 2

2y=-1x+4

2y+x=4 or x+2y=4 standard form

Solve: please, THANKS

Answers

Answer:

20/21

Step-by-step explanation:

have a nice day or evening

Apple juice and cranberry juice have been mixed in the ratio of 4:5. If the price of apple juice is 45 cents per pint and the price of cranberry juice is $0.8 per pint, what should the price of one pint of the mixture be?

Answers

Answer:

$0.24

Step-by-step explanation:

The computation of the price of the one pint of the mixture is shown below:

Since the ratio of apple juice and cranberry juice is 4:5

And, the price of apple juice is 45 cents i.e. = 0.45 × 4 ÷  9 = 0.2

Also the price of cranberry juice is $0.8 = $0.08 × 5 ÷ 9 = 0.04

SO, the price of one pint of the mixture is

= 0.2 + 0.04

= $0.24

Answer:

$0.24444

Step-by-step explanation:

Someone plz help me giving brainliest

Answers

Answer:

1. Why can't he understand that we don't have no more to give to him.

2. The sitter had to sing  Im a Little Teapot before Suzie would go to bed.

3. Meddlesome is interfering.

4. Heading

5.Takes

solve for x

x- 5/3=1​

Answers

Answer:

x = 8/3 or 2 2/3

Step-by-step explanation:

x - 5/3 = 1

x - 5/3 + 5/3 = x

1 + 5/3 = 8/3 or 2 2/3

x = 8/3 or 2 2/3

Answer:

x = [tex]\frac{8}{3}[/tex]

Step-by-step explanation:

Given

x - [tex]\frac{5}{3}[/tex] = 1 ( multiply through by 3 to clear the fraction )

3x - 5 = 3 ( add 5 to both sides )

3x = 8 ( divide both sides by 3 )

x = [tex]\frac{8}{3}[/tex]

Find the surface area of the regular pyramid.
14 cm
11 cm

Answers

Answer: you on this to

Step-by-step explanation:

Please, if anyone knows help me, I need a lot of help in this activity.

Answers

Answer:

Step-by-step explanation:

Perimeter of the given polygon = n + 2 + 3 + 4 + n + 2 + 3 + 4

                                                     = 2(n + 2 + 3 + 4)

                                                     = 2(n + 9) units

Area of the composite figure = Area of rectangle A + Area of rectangle B + Area of rectangle C

                                                = (3 × 4) + (n ×2) + (2 × 3)

                                                = 12 + 2n + 6

                                                = 2n + 18

                                                = 2(n + 9) units²

Therefore, perimeter of the given figure = Area of the figure

What is the best measure of center for this data?



{101, 2, 108, 104, 102, 107, 109, 102}
Question 5 options:

A. mean or median because there is no outlier


B. median because there is an outlier


C. mean because there is an outlier


D. mode because there is an outlier

Answers

Answer:

The answer is A

Becaise Mode is not a measure of centre, and Mean is dramatically changed with the outli

I think that would be correct, Hope it helps!!!

There are 568 kiloliters of soup in a pot. How many liters of liquid did the chef use for this recipe?

.568 L

5.68 L

568,000 L

5,680 L
HELLLP

Answers

Answer:

568,000L

Step-by-step explanation:

1 Kiloliter = 1,000 Liters

568 x 1,000 = 568,000

Write an equivalent expression to
3² x 15 x 54

Answers

Equivalent Expression: 9x + 15x = 54

Step-by-step explanation:

First, yo would do 3^2 which is 3 times 3 equals 9.

So, it would be 9x + 15x = 54

Then, you combine like terms, 9x + 15x

So 9+15= 24x

Last, would be 54 = 24x

divide by 24 onto both sides and then x will be by itself and then it will give you an answer.

Answer: 2.25

The area of a rhombus is 60 cm one diagonal is 10cm other dignonl is

Answers

Answer: 12 cm

Explanation: The other diagonal is 12 cm as I calculated.

Anna went to the store to buy a new dress. The dress she chose was 30% off the original price. What was the original price of the dress that was marked down dollars 13.95?

Answers

Answer:

$46.5

Step-by-step explanation:

Let X be the original price.

0.3X=13.95, X=13.95/0.3, X=46.5.

Answer:

18.135

Step-by-step explanation:

13.95×30/100=4.185

13.95+4.185=18.135

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