Need Help With Math

i cant understand how to do this math

i have a 75 adverage on my tests in my math class and that counts as 80% of my grade
i have a 100 adverage on my hw which is 20% of my grade

whats my grade in the class

 

0,8 x 75
+
0,2 x 100
= 80

 

75*0.80+100*0.20 = 80

Looks like a low B to me ^_^
Good thing you're not graded on spelling
AVERAGE

 

lol thanhks for teling me my adveraqe guyds i apprekiate it

 

wow what grade are you in

that stuff is grade 4 man

 

im in 2nd grade
im mad lazy

 

i cant do math...so im just not going to try.

why not just ask your teacher?

 

its alredy been taken care of
but i didnt ask her because she is a depressed peice of ---- who got nasty with me today when i asked her about my grade and its not like i do nething to her anyway

 

yea i have ones like that too...sucks.

 

it's a simple equation that i learnt in year 4(me= AUS)