## Tuesday, November 17, 2009

### How I Stopped an Alien Invasion Using Proportion Jerick873

These are the questions I chose.

#19 pg 68
Determine the missing value in each equivelent fraction.
3=18=x9
x4=24=12
To solve this, use the information that was already given so to get to 3 using 18 divide by 6 so what you do to one side you do to the other , and to get to 9 from 18 divide by 2

#18 pg 68
At an amusement park, a new thrill ride was introduced. It costs \$7.50 for 3 rides on the wild slider.
a) \$/# of rides

7.50/3
2.50/1

\$2.50/per ride

To figure the unit rate you have yo make the # of rides 1 so divide by 3 and what you do to one side you do to the other.

b) \$/#of rides
2.50/1
45/8

\$45/18 ride

\$ = 7.50 = 45
#of rides = 3= 18

To do this, since you know the unit rate you multiply that by 18 and you do the same to the other side and you get your answer.

#10 pg 67
Set up a proportion for each situation

a) # of beans = 10 beans = 30 beans
mass = 17 g = 51 g

To set up a proportion all you do is put it like that or in a table

Jemineth873

good job with the story and the little lesson , about proportions.