Answer:
15
Step-by-step explanation:
the answer is 15 because a triangle has to equal 180 so all you have to do is add 81 and 84 then subtract 180 from it. like this 81+84=165 180-165=15. Hope this helps.
Answer:
sqrt7
Step-by-step explanation:
cosA = b/3 = sqrt2 /3
so b = sqrt2
apply the pythagorean theorem
a = sqrt7
Answer:
x=43
Step-by-step explanation:
(22+21)=43
The value of x is 14 I think
Answer:
15 25 25 65
10 05 20 35
25 30 45 100
First column is 6th grade, second is 7th, third is 8th and the last column is total
