Yes
right circular cones are similar if they have equal vertex angles
The equation would be x+15=46. I came up with this equation because we are given the total number of people at the reunion this year and we know how many more people are here this year than last year. The unknown is the number of people last year. That is why x would represent the number of people at the reunion last year because that is the unknown. If we add 15 to the number of people last year, it will give us 46( the number of people at the reunion this year).
To find x, we just use opposite operation to get the answer. Opposite of addition is subtraction so, we subtract the number of more people and the reunion this year from the total number of people at the reunion to get the unknown number of people at the reunion last year. 46-15 is 31. Therefore we know that 31 people were at the reunion last year
Answer:
Step-by-step explanation:
Yes
The number of large boxes is 4 and the number of small boxes is 14.
<u><em>Explanation</em></u>
Suppose, the number of large boxes is 
and the number of small boxes is 
As, the total number of boxes is 18, so the first equation is....
The large boxes hold 35 books, and the small ones hold 20 books and the total number of books is 420. So the second equation will be .....
Now solving equation (1) for itself , we will get....
We will plug this into equation (2). So.....
Now plugging this 
into the equation .......
Thus, the number of large boxes is 4 and the number of small boxes is 14.
