Answer:
1. The rectangular prism is a right prism with rectangular bases (check the picture)
2. It has 8 vertices, so we are looking for 3d figures with 4 vertices.
3. A face can have at least 3 vertices, and the 4th must be outside of the plane determined by the first 3 vertices. This makes 4 vertices in total.
4. The 3d figure described in step 3 is a pyramid.
so the answer is prism
Step-by-step explanation:
Answer:
99
Step-by-step explanation:
Given:
A student has earned the following scores on four 100-point tests
65 73 81 82
Average grade of total five test = 80
Question asked:
What score must the student earn on the fifth and last 100-point test of the grading period to earn an average test grade of 80 for the five tests ?
Solution:
Let score earned in fifth test = ![x](https://tex.z-dn.net/?f=x)
By using average formula:
Now, according to the question
Average grade of total five test = 80
Sum of all observation by tatal num. of observation = 80
= ![80](https://tex.z-dn.net/?f=80)
![\frac{301 + x}{5} = 80\\](https://tex.z-dn.net/?f=%5Cfrac%7B301%20%2B%20x%7D%7B5%7D%20%20%3D%2080%5C%5C)
Multiplying both side by 5
![301 + x = 400](https://tex.z-dn.net/?f=301%20%2B%20x%20%3D%20400)
Subtracting both side by 301
![x = 99](https://tex.z-dn.net/?f=x%20%3D%2099)
Therefore, he must score 99 to earn an average test grade of 80 for the five tests.
Answer:https://studyandanswers.com/mathematics/question22196149#
Step-by-step explanation: