Answer:
B
Step-by-step explanation:
Number A is wrong because 180-20-65 does not equal 90
Number B is right because x is equal to 180-90-65 which does not equal 90
We do not have to consider any more.
So you do 79+89+90=258 then you take 258/3=9.3 so you would get a 93% test average
Hope this helps
To solve this I offer you to download All in one calculator.
if you give the sides or a side and an angle
or a side and hypotenuse, this app will give you the unknown parts of the triangle.
a side is 500m and an angle is 80 (90-10=80)
x will be 2879.39
hope this helps
The first one and the second??