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.
The answer is times the 5500 adding the 6600 and as it adds up the box rate to 1.75 the answer is 1.75 insterest rate and 132000 dollars left
According to my calculations, it would take approximately 3.4 (being in decimal form) pages PER minute or Just 3 minuets being rounded to the nearest tenth. If I am I correct please correct me. I used a calculator.
Answer:
20
Step-by-step explanation:
the least common factor for 4 and 10 is 20
Answer: True
You can break the polygon up into smaller pieces such as triangles. Find the area of each triangle, and then add up those smaller areas to get the overall total area.