Find the exact value of cos (-270).
1 answer:
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Answer:
C. 0, 1.29, -0.65
Step-by-step explanation:
The real solutions of the equation is where the graph of
intersects the x-axis.
This means that we need to graph using a graphing software.
From the graph shown in the attachment ,
, and
are the real solutions.
The correct choice is C
Answer:
450 ml.
Step-by-step explanation:
Let x be the amount of water drank by Alla and y be the amount of water drank by Balla.
We have been given that Alla and Balla together drink 750 ML of water. We can represent this information as:
We are also told that Alla drinks 50% more than Balla. We can represent this information as:
From equation (1) we will get,
Upon substituting this value in equation (2) we will get,
Upon distributing 1.5 to right hand side of the equation we will get,
Upon adding 1.5x to both sides of equation we will get,
Let us divide both sides of our equation by 2.5.
Therefore, Alla drank 450 ml of water.