Ratios and rates
What is an equivalent ratio?
Two ratios that have the same value
2/7=x/21
x=6
18/42=3/t
t=7
What is a scale drawing?
A two dimensional drawing that is similar to the object it represents.
What is an outcome?
The possible results of an experiment.
3lb/$1=?oz/$1
48oz/$1
x/2=20/10
x=4
16/p=10/45
p=72
1cm/200m=4/cm/x meters
800 meters
What is an event?
An outcome or a collection of outcomes.
5cm/1min=?cm/1hr
300cm/1hr
2/5=x/25
x=10
9/b=1.5/7
b=42
What is a scale model?
A three-dimensional model that is similar to the object it represents.
44/256
11/64
You host a party for 12 people the food and drinks for the party cost $66. What is the cost per person?
$5.50 per person
x/4=13/2
x=26
What is a cross production?
A product of the numerator of one ratio and the denominator of the other ratio.
1/52=x/78
1.5
what is the odds in favor?
The number of favorable outcomes to the number of unfavorable outcomes.
$33,000/1yr=?dollars/1month
2750dollars/1month
3/4=y/24
y=18
0.4/6=18/z
z=270
What is a scale?
A drawing or scale model gives the relationship between the drawing or models dimensions and the actual dimensions.
What is a favorable outcome?
Outcomes for rolling an odd number are rolling a 1, 3 and a 5.