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 
        
             
        
        
        
Answer:
Since this is a right triangle with one angle and hypotenuse given and opposite side unknown, we can use the definition of sine to find the unknown side.
sin 17 = x/hypotenuse = x/19
x = 19sin17 = 5.6
 
        
             
        
        
        
Answer: 33.5
Step-by-step explanation: this question is on brainly lol but nobody explained it 
1865 - 1240 = 625
Divide 625 by 1865 (626 goes first)
The answer is 0.335 move the decimal 2x forward
33.5