Answer:
The solution is:
Step-by-step explanation:
Given the expression
Solving
so
∵
Therefore, the solution is:
Answer:
?=7
Step-by-step explanation:
Here is a cool trick that I believe only works with 9.
Add the numbers, 3+9+9+8+x= divisible by 9.
3+9+9+7+8 is 36 which is the only number divisible by 9.
Answer:
7.83
Step-by-step explanation:
cos(40)=6/(ZX)
zx=7.83
The correct unit for this triangle would be cm. Hope this helps!