Answer: 
Step-by-step explanation:
Given
For
It indicates 
lies in I st quadrant. The value of cosine is equal to 
Therefore, must be
No because if you split 20 by 3 it’ll give you a decimal and you can’t find half of a plant or half of an animal
Answer:
There are 200 centimetres in 2 metres. Therefore, 80 centimetres is equal to 80/200 x 100 = 40 percent of 2 metres
5Step-by-step explanation:
Answer: a = 14.5 mm
Explanation: Perimeter is the measure of the outside, which to get you just add the outside values together. To find a, you take the perimeter that we know is 34.8 mm and subtract the 11.6 mm and 8.7 mm, which leaves us to have 14.5 mm. We can check that this value is approximately right because it is the hypotenuse, which is the longest side. Since the value is the biggest out of the other two, we can assume that we found the right value.
