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1/3 + 1/5  =  1/5 + 1/3  =  1/2 + 1/30  =  1/30 + 1/2

So, K can be 5, 3, 30, and 2.

Their sum is 40.

y = o when the object hits the surface

0  =   -6t^2 - 20 t + 56           Use quadratic formula (or factoring) to solve for the positive value of 't'

A + B = 11.

c - a = 3/2.

2x^2+2y^2+10x-6y-48=0             divide the entire equation by 2

x^2 + 5x    +   y^2 -3y    = 24       complete the square for x and y

(x+ 2.5)^2    +   (y-1.5)^2   =       24   + 6.25 + 2.25

                                                   24 + 6.25 + 2.25    =   r^2    = 32.5     

                                                                       area = pi r^2      =   32.5 pi

The product of my number is 32.

The average of all possible values of t is 18/5.

The equation is 2x + y = 1.

a Mersenne prime is a prime number one less than a power of two

2⁷ = 128 which means there are 6 number that can be a Mersenne prime less than 100: 

2¹ - 1 = 1, which isn't prime
2² - 1 = 3, which is prime

2³ - 1 = 7, which is prime
2⁴ - 1 = 15, which isnt prime

2⁵ - 1 = 31, which is prime

2⁶ - 1 = 63, which isnt prime 

this means there are 3 Mersenne primes that are less than 100

-5p + 20 - 5p + 20

= -5(p - 4 + p - 4)

= -5(2p - 8)

That is the last one for today . . . :

https://www.rapidtables.com/math/symbols/Logic_Symbols.html

That is basic knowledge:

https://basicknowledge101.com/pdf/km/mathematical_symbols.pdf

This could be helpful . . . :

https://mathvault.ca/hub/higher-math/math-symbols/

Simple Wikipedia - List of mathematical symbols:

https://simple.wikipedia.org/wiki/List_of_mathematical_symbols

List of TeX entensions:

https://en.wikipedia.org/wiki/List_of_TeX_extensions

More LaTeX:

https://web.archive.org/web/20141105143723/http://www.artofproblemsolving.com/Wiki/index.php/LaTeX:Symbols

This could be helpful too!

https://web.archive.org/web/20090323063515/http://mirrors.med.harvard.edu/ctan/info/symbols/comprehensive/

Hope that was helpful.

Answer = 20$

60*4/12

=20$ per person

Nevermind I got it. (:

The force F needed to tighten a blot varies as the length L of the wrench handle.
If F=250N for L = 22cm, and F=550 N for L = 10cm, determine the equation relating F and L.

F = kl

250 = k/ (22)

k = 250*22 =  5500

F = (5500) / L   Newtons

First find  f(4)   =  2(4) - 3 = 5

then find   g (5) = 5 - 4(5) = -15

805 - (-25) = 805 + 25 = 830 m