ANSWER
D.) 7x+2.8y
Hope this helped!
Answer:
Step-by-step explanation:
sec (-x)-sin (-x) tan (-x)=cos x
sec(x)-(-sin x)(-tan x)=cos x
1/cos x-sin x(sin x/cos x)=cos x
multiply by cos x
1-sin ²x=cos²x
or 1=sin²x+cos²x
which is true.
Answer:
D
Step-by-step explanation:
The LCD would be (y + 1) * 2y = 2y² + 2y.
<span>All the gold ever mined would fit into a single cube about 60 feet on a side.
</span>
A figure that is widely used by investors comes from Thomson Reuters GFMS, which produces an annual gold survey.
Their
latest figure for all the gold in the world is 171,300 tonnes.
A cube made of 171,300 tonnes would be about
20.7m (68ft) on each side.
