The measure of angle CAR is 65 degrees!
Answer:
First, determine the number of inches each contestant made by multiplying the fraction of layers by the height of each layer.
Next, determine what fraction of an hour each contestant took to make their fraction of layers by writing each number of minutes as a fraction of 60 minutes.
Last, determine each contestant’s unit rate in inches per hour.
So, Zeke's unit rate was of an inch per hour.
Melanie's unit rate was of an inch per hour.
To find out how much greater Zeke's unit rate was than Xavier's unit rate, subtract Xavier's unit rate from Zeke's unit rate.
Therefore, Zeke's unit rate was of an inch per hour greater than Xavier's unit rate.
Step-by-step explanation:
Answer: 
Step-by-step explanation:
Let be "x" the height inches (in the model) of a 84 foot building.
According to the information provided in the exercise, we know that the height of a two-story building is 21 feet and in the scale model its height is 3 inches.
Knowing this, we can set up the following proportion:
The final step is to solve for "x" in order to calculate its value. We get that this is:
Therefore, an 84 foot building will be 12 inches tall in the model.
25% is the same as a quarter (as a fraction) so you can simply divide 2536 by 4:
2536/4 = 1268/2 = 634
