Answer:
for question one - x = 12
Step-by-step explanation:
a triangle is always 180, in other words you will add all the corners equal to 180
ex (for first question) - 7x -2 + 4x + 5x - 10 = 180
you add like terms, the x with x and single numbers with numbers, which results in 16x - 12 = 180. then you do the original operation "what you do to one sign of the equal side you do to the other"
7. p=0.4
i dont know about 3
or 6
Answer:
40/71
Step-by-step explanation:
Because 71 is prime so there is no other way to simplify
(2•7)-5
14-5= 9
So the answer is 9