You first add all the numbers together. 17+18+15. You get 50. Then, since Jenny baked 15 cookies, (respectively) you take 15 over 50 and times it by 100 to get 30%. I’m pretty sure.
The total feet that were thrown is 120.49 if you just add all of the feet together that's how you will get your answer.
The image is a dilation of the pre-image with a scale factor of 3.
Answer: 1/2
Step-by-step explanation:
(a)
![cos(150)](https://tex.z-dn.net/?f=%20cos%28150%29%20)
we know that
![150=180-30](https://tex.z-dn.net/?f=%20150%3D180-30%20)
![cos(150)=cos(180-30)](https://tex.z-dn.net/?f=%20cos%28150%29%3Dcos%28180-30%29%20)
![cos(150)=-cos(30)](https://tex.z-dn.net/?f=%20cos%28150%29%3D-cos%2830%29%20)
now, we can use unit circle
and we get
...........Answer
(b)
![sin(150)](https://tex.z-dn.net/?f=%20sin%28150%29%20)
we know that
![150=180-30](https://tex.z-dn.net/?f=%20150%3D180-30%20)
![sin(150)=sin(180-30)](https://tex.z-dn.net/?f=%20sin%28150%29%3Dsin%28180-30%29%20)
![sin(150)=sin(30)](https://tex.z-dn.net/?f=%20sin%28150%29%3Dsin%2830%29%20)
now, we can use unit circle
and we get
...........Answer