Answer:
56
Step-by-step explanation:
A negative times a negative makes a positive, so:

Answer:
the answer is 78 degrees
Step-by-step explanation:
a acute angle is less than 90
Answer:
In the pic
Step-by-step explanation:
If you have any questions about the way I solved it, don't hesitate to ask me in the comments below ÷)
X= 20/17 ; multiply by reciprocal 10 times 8/17 =4x then 80/17=4x , divide both sides by 4 leaves you x=20/17
I think A which is 4in but not sure