What is the value of the expression when y = 2?
1 answer:
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Answer:
Step-by-step explanation:
Let's label this triangle as triangle ABC. Side AB is 18, side BC is 20 and side CA is 25 and the angle we are looking for is angle C. Use the Law of Cosines to find the missing angle. You have to use the Law of Cosines because in order to use the Law of Sines you have to have an angle given and we don't so we have no other options. In our case,
which for us looks like this:
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Use the 2nd button and the cos button to find the missing angle.
Angle C = 45.4 which is, rounded to the nearest degree, 45°
Answer:
Pauld should place a maximum of 12 boxes in the elevator
Step-by-step explanation:
As in the sign is stated that the maximum weight that the elevator can carry is of 1000 pounds and each of the boxes of books weighs 80 pounds, and as he is not going to be inside the elevator you should divide the maximum weigh the elevator can carry by the weight of each box of books then you have
He can maximum ride 12 boxes and a half, but if the boxes can't be divides he can just carry 12 boxes, because if he carries 13 the weight in the elevator will be of 1040, that beats the maximum capacity of the elevator.
Then he can maximum place 12 boxes in the elevator