Answer:
20
Step-by-step explanation:
10×2=20 because 2 times 10 equals 20 and 20 divided by 2 equals 10
Answer:
8x+9
if you are happy with my answer, please give brainliest :)
Step-by-step explanation:
Combine like terms:
2x+9+6x=8x+9
Answer:
75
Step-by-step explanation:
Let x represent the 5th score. Then:
70 + 80 + 85 + 90 + x
---------------------------------- = 80
5
Then:
150 + 175 + x 325 + x
-------------------- = 80 => ------------- = 80
5 5
so that: 325 + x = 400
Thus, x = 75.
If Josh earns a 75 on his 5th quiz, his 5-quiz average will be 80.
Answer:400. 10^2 x 12/3 = 400.