Use the Pythagorean Theorem Formula
a^2+b^2=c^2
a=12
b=9
12^2+9^2=c^2
144+81=c^2
225=c^2
Square root 225 and c^2
c=15
Answer: c=15
The answer is 22 cm, you just add up all the sides when doing perimeter
The answer is 18.5, I believe
good luck

<span>Substitute (I) into (II), we have:
</span>







<span>Replace (II) in (I), we have:
</span>



Answer:
each student sell:
Lori = 55 pizzasSteve = 69 pizzas<span>
</span>
Answer:
See attached image
Step-by-step explanation:
If the number of blueberries is the x value, and number of calories is the y value, then we can create the ordered pairs (5,4) (10,8) (15,12) based on the data in the table.
Plotting these on the graph is simple - just go to the x value then the y value and plot where these lines meet.
The slope of a line is always the rise over run.
Every time our x increases by 5, our y increases by 4. The rise is 4, and run is 5, so the slope is 
Hope this helped!