Answer:
the first formula
Step-by-step explanation:
the graph is y=cosx and cosx=sin(x+90)
2 is one, i really don’t remember this. I think 6 and 4 3 i think.
Answer:
18
Step-by-step explanation:
-3 + 80 ÷ 8 -5 · (-1) ⇒ -3 + 10 + 5 ⇒ 18
80 is 40% of 200 because 40%of 100 is 40. Common sense is just to double both values, also 200 x .40 (40%as a decimal) gives you the result of 80.
