-13.213203440000000000000
So average is of the first 6 tests is 82 well that means
(test1 + test2+ test3+ test4 + test5+test6)/6 = 82
so now let do some cross multiplliying
test1 + test2 + test3 + test 4 + test5 +test6 = 82*6
test1 + test2 + test3 + test 4 + test5 +test6 = 492
now lets see if we can find that 7th test score
(test1 + test2 + test3 + test4 + test5 +test6 + test7)/7 = 80.5
So look we found test1 + test2 + test3 + test4 + test5 +test6 to be 492 so lets substitute.
(492 + test7 )/7 = 80.5
test7 = (80.5*7)-492 = 71.5
P+o-wt=4b
-wt=4b-p-o
t=(4b-p-o)/-w
mark as brainliest if it’s helpful
Answer:
98%
Step-by-step explanation:
You add 78 and 20.
Tell me if it is wrong.
Thank you.
Omg i can help you because I was having trouble with the same thing! so the Total Surface Area= Ph+2B meaning you have to find the P=perimeter Lx2+Wx2, then the height, then base. the lateral area is Ph+B :)!!
