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Can you tell me why those numbers had to be added so I know for future questions like this?

Thank you.

yes I'm sure that the Pythagorean theorem was needed.

10    12   14    15      15.5     16   17.5    18    19

Q2  =   15.5

Q1 =     [12 + 14] / 2   =    26 / 2  =   13

Q3  =  [ 17.5 + 18 ] / 2   =  17.75

So....the IQR is just     17.75 - 13   =   4.75

but i cant use the cosine rule, i think i have to divide into two different 90 degree triangles

and then find the sides in the one with 62 degree inn and use sinus

sin62(1.8/2)= 0.79.....

2.5-0.79.... almost equal 1.7

then 1.7^2+1.8^2=6.148

sqrt(6.148)=2.479

but since i dont know if it was exactly 1.8 on the height then i might be at 2.4 cm

hmm

x=2.4

Use the cosine rule for this.

a² = b² + c² -2bc*cos(A)

In your case 'a' is x, A is 62°, b is 2.0 and c is 2.5

.

The average is given by

Total Revenue  / Total Tickets Sold

Total Revenue  =  20(1.25) + 38(3.50) + 12(4.00) + 50(5.50)  =   $481

And the total tickets sold =   20 + 38 + 12 + 50   =  120

So....the average price is    481 / 120   ≈   $4.01

Amount of revenue from ticket sales / # tickets sold = average

[ 20(1.25) + 38(3.50) + 12(4.00) + 50 (5.50)  ]  / ( 20 + 38 + 12 +50)   =~~ $4.01 /tick

Correct....!!!

The correct equation is

y = 0.728x^2 - 20.213x + 179.246

Generated here :

https://keisan.casio.com/exec/system/14059932254941

http://tinypic.com/r/2z6b3o7/9

THATS THE NEW URL PLS CHECK NOW

Using similar triangle ratios:

6/18  = y/24

y = 24 (6/18) = 8 units

0.1 is the decimal 

well, this is a simple division problem... 

since it takes 34 pounds to cover a 5-acre field you can just divide 34 by 5 in which you will get 6.8 pounds of seed

lol, gingerAle got me shook, that is much more backlash that i'd expected,,,,,,.......

well i apologise, i didnt realize the site didnt let you magnify the image...oops......

well its not the concept, ive solved all the other questions but ive tried cracking these multiple times by reading the explanation but i couldnt understand it , i thought maybe you guys could give me another point of view. 

is there a way i can upload the image here?

every times i try to do it , it somehow just shows me to keep uploading the image even after ive selected it and when i do it the image doesnt appear....

THANK YOU

Notice: It is 24 seconds instead of 7 seconds.

408 m / 24 s = 17 m/s

408 m / 24s   x  60 s /1 min  x 1km/1000m=1.02 km/min

\(\dfrac{9}{2} \sqrt{\dfrac{1}{2}}\\ = \dfrac{9}{2\sqrt2}\\ = \dfrac{9\sqrt2}{4}\)

Answer to the first question: 724 km/h

Answer to second question: 17 m/s

Rosala, these images are atrocious; most require enhancement just to read them.

The questions you’ve posted are examples from a text book that includes comprehensive solutions.  Considering this, you need to present your questions in clear context.  That is, you need to explain what you do not understand about the question and/or solution, and include explicit examples.   

 If you do not understand anything about them, then you need to return to the prerequisites and master those skills before continuing on. This is usually what you need to do when you do not understand the concepts. 

If you do not have time to diligently study, then you do not have time to learn this material.  This is a simple law of [physics] education. There is no substitute for studying.

GA

What is the unit rate for meters per second if a car travels

408

meters in

24

​seconds?