Answer:
{7, -2}
Step-by-step explanation:
6x-7y=2
2x+3y= -10
multiply the second one by -3
6x-7y=2
-6x-9x=30
-16y=32
y= -2
2x - 6 = -10
2x= -4
x= -2
Hello :
<span>3t(t+2)-(3t^2+5t) when t=19
3(19)(19+2)-(3(19)²+5(19) =(57)(21)-(1083+95) =1197-1178 =19</span>
Answer:
do you need to simplify or solve for x?
Step-by-step explanation:
What are the answer choices in the drop down?
(a) Given that the angle must be coterminal with this other angle:
![-58\text{\degree}](https://tex.z-dn.net/?f=-58%5Ctext%7B%5Cdegree%7D)
By definition, Coterminal Angles have the same initial side and they also have the same terminal side.
In this case, knowing that the angle must be between these angles:
![0\text{\degree and }360\text{\degree}](https://tex.z-dn.net/?f=0%5Ctext%7B%5Cdegree%20%20and%20%20%7D360%5Ctext%7B%5Cdegree%7D)
You can find it by adding 360 degrees to the given angle:
![-58\text{\degree}+360\text{\degree}=302\text{\degree}](https://tex.z-dn.net/?f=-58%5Ctext%7B%5Cdegree%7D%2B360%5Ctext%7B%5Cdegree%7D%3D302%5Ctext%7B%5Cdegree%7D)
(b) Given the angle:
![\frac{16\pi}{3}](https://tex.z-dn.net/?f=%5Cfrac%7B16%5Cpi%7D%7B3%7D)
You know that the coterminal angle must be between:
![0\text{ and }2\pi](https://tex.z-dn.net/?f=0%5Ctext%7B%20%20and%20%7D2%5Cpi)
Therefore, you can find it as follows:
![\frac{16\pi}{3}-2\pi=\frac{16\pi-(3)(2\pi)}{3}=\frac{10\pi}{3}](https://tex.z-dn.net/?f=%5Cfrac%7B16%5Cpi%7D%7B3%7D-2%5Cpi%3D%5Cfrac%7B16%5Cpi-%283%29%282%5Cpi%29%7D%7B3%7D%3D%5Cfrac%7B10%5Cpi%7D%7B3%7D)
Hence, the answers are:
(a)
![302\text{\degree}](https://tex.z-dn.net/?f=302%5Ctext%7B%5Cdegree%7D)
(b)