ElectricPavlov

Never !   Not ONLY did Alex get a head start....he is moving faster @ 2 ft/min and Alissa is only going 1.5 ft/min.

If you mean they start on opposite sides then that is something else....but that is not what is written.  o/w 48.28 minutes

199-(2t+30) = 1.5t

169 = 3.5t    t = 48.28 minutes they will pass each other if going in opposite directions.

I'll bet you meant   sqrt(12345678901234567890)         Use a calculator!

587/60 =   9 hrs   +  .78333333 hrs    

.7833333 hrs  x   60 min/hr  =  47 mins          9 hrs 47 minutes  

  27 tadpoles

___________           X    315 Mosquitoes      =   189   tadpoles

45 Mosquitoes

(x - 1/2) ^2     =   (x-1/2)(x-1/2)  =   x^2 -1/2x -1/2x + 1/4   =         x^2 - x + 1/4

Here are the POSSIBILITIES

hhh

hht

hth

htt

ttt

tth

tht

thh      Seven possibilities have an h     out of 8     

So:    7/8       ( or  87.5%)

From Hitchiker's Guide to the Universe

the answer is '42'

A direct proportion would be something like y = k x   where k is a proprtionality constant

from the first set of data points we can see   

y = k x

18 = k (10)     or k = 1.8

so for the second set of points    y = P = (1.8) 35 = 63   so P = 63

for the tird set of data points     9.9 = (1.8) Q      Q = 9.9/1.8 = 5.5   so Q  = 5.5 

1 / (12^5 a^36 b^49)

The way your equation is written:   11 plus 4 = 15     times  -7 =  - 105   minus 2 =  - 107