ElectricPavlov

1325 m  /  530 m/hr   = .......... hr  

1+2+3+x   has to add to a factror of 64

factors   1 2   4  8  16  32 64  

for one         1 +2+3+ 2 = 8

for another   1 + 2 + 3 + 10   = 16

another        1 + 2 + 3 + 26   = 32

 and             1+ 2 + 3 + 58    = 64

15b /24r   *  9 r/15y  * 1000y   = 375 b

You can find the ninimum 'x'   by   using  - b/ 2a   

    then use this value in the equation to find the corresponding 'y' value

18 (sqrt (4*2)   - 8 sqrt(9*2)

18 * 2 * sqrt2 - 8*3 sqrt2

36 sqrt2 - 24 sqrt2

12 sqrt2

sqrt (144*2)

sqrt 288

10^31 / 10^-3  = 10^(31- -3) = 10 ³⁴

 sqrt  10³⁴  = 10 ¹⁷

10³ * 10¹⁷ = 10²⁰         so n = .........

Does anyone ever look at what they have posted?   There are no numbers in this Question !

12 m/hr x  4.5 hr = 54 miles

x = 54 cos 143 =......          west  

y = 54 sin 143 = ......          north            assuming 0^o is North   ( I think the |41.3|  answer choices above  should be 43.1)

common ratio = 1/5     which is <1    so

Converges

geometric

arccos (7/18) = 67.12^o