ElectricPavlov

I will assume you are asking for GCF (not GFC)

The greatest common factor of 10 (1,2 x 5)  and 2 (2 x1)  IS 2    so 'a' is correct

                                               of 2 (2x1)  and 24 (1,2,3,4,6,8,24)  IS 2  so 'b' is correct

                                                of 6 (1,2,3,6) and 12(1,2,3,4,6,12) is 6  so 'c' is incorrect

                                               of 4(1,2,4)  and 6 (1,2,3,6)   IS 2 so 'd' is correct

a  and  b  and  d

The 'shift' button is usually the same as the '2nd' button and when you press these it causes all of the rest of the keys to be the INVERSE of what they usually are (generally...not always)

So.... it gives all of the keys a second capability......USUALLY the inverse

You are given  #pages   and # days    and you want  #pages/day  so just divide the two

42 pages / 7 days   =    ???   Pages/day    (just use the calculator)

Cool....then I hope you are actually UNDERSTANDING the solutions and LEARNING something !

A -  A/4  + 3/(4A)        or   A - A/4 + 3/4 (A) ???    Which one is it?

Are we just doing your homework for you?

x= # oranges      .5x = price for oranges

x+4 = # apples    .3(x+4) = price for apples

.5x + .3(x+4)  =  3.60      solve for x ( the number of oranges)

In light of what Guest and I have been discussing, here is the solution with only SIMPLE interest  used

the frist year you will deposit 'A'   which will get .015 interest for 5 years:

A + A(.015)(5)     five years

A + A(.015)(4)     four years

A + A(.015)(3)     three years

A + A(.015)(2)      two years

A + A(.015)(1)      one year    ALL of these added together need to equal 19500

___________

5A + A(.015)(15)

A(5+(.015)(15))  

A(5.225) =19500

A=3732.05   Annual (1st of year) deposit at simple interest of .015  

So for simple interest, with annual deposits at the BEGINNING of the year, we can use this equation:
FV = A (n + i \(\sum_{1}^{n}\))

OK......I am done with this question now.....I think !

The DIAMETER is 22cm  so the RADIUS is 11cm        Right?

3x+2 = 11

x=3

10 feet is the length ....it is also the HYPOTENUSE of a right triangle.

ONE leg is 8 inches, or 2/3 ft    

we need to fing the OTHER LEG

a^2 +b^2 = c^2  Pythagorean Theorem

(2/3)^2 + b^2 = 10^2

b^2 = 100 - 2/3^2

b=9.9777 ft

SO the horizontal distance is 9.9777feet and the rise can be (according to guidelines) 9.9777 inches or less so this ramp is OK !

A little calculation error on the last step.....corrected it....the ramp is still OK

Thanks guest !    I understand what you are saying.......

.I felt like giving the YEARLY payment would be closest to avoiding the compounding implications of monthly/weekly etc payments.